./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product24.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_spec2_product24.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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:16:12,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:16:12,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:16:12,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:16:12,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:16:12,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:16:12,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:16:12,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:16:12,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:16:12,541 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:16:12,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:16:12,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:16:12,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:16:12,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:16:12,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:16:12,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:16:12,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:16:12,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:16:12,543 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 -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2025-03-03 14:16:12,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:16:12,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:16:12,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:16:12,754 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:16:12,754 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:16:12,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2025-03-03 14:16:13,894 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3a09377/5929e651e9c54e7c9072e88c4d74ab82/FLAG8f5a41a51 [2025-03-03 14:16:14,193 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:16:14,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2025-03-03 14:16:14,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3a09377/5929e651e9c54e7c9072e88c4d74ab82/FLAG8f5a41a51 [2025-03-03 14:16:14,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb3a09377/5929e651e9c54e7c9072e88c4d74ab82 [2025-03-03 14:16:14,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:16:14,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:16:14,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:16:14,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:16:14,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:16:14,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:16:14" (1/1) ... [2025-03-03 14:16:14,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fae74d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:14, skipping insertion in model container [2025-03-03 14:16:14,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:16:14" (1/1) ... [2025-03-03 14:16:14,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:16:14,863 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c[63703,63716] [2025-03-03 14:16:14,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:16:14,919 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:16:14,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2025-03-03 14:16:14,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [716] [2025-03-03 14:16:14,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2374] [2025-03-03 14:16:14,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2556] [2025-03-03 14:16:14,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2912] [2025-03-03 14:16:14,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3030] [2025-03-03 14:16:14,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2025-03-03 14:16:14,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3077] [2025-03-03 14:16:14,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3086] [2025-03-03 14:16:14,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3177] [2025-03-03 14:16:15,005 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_spec2_product24.cil.c[63703,63716] [2025-03-03 14:16:15,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:16:15,038 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:16:15,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15 WrapperNode [2025-03-03 14:16:15,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:16:15,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:16:15,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:16:15,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:16:15,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,092 INFO L138 Inliner]: procedures = 98, calls = 353, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 933 [2025-03-03 14:16:15,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:16:15,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:16:15,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:16:15,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:16:15,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,135 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 14:16:15,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:16:15,184 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:16:15,184 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:16:15,184 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:16:15,185 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (1/1) ... [2025-03-03 14:16:15,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:16:15,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:15,209 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 14:16:15,212 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 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:16:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:16:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:16:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:16:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:16:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:16:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-03-03 14:16:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-03-03 14:16:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:16:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:16:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:16:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:16:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-03 14:16:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-03 14:16:15,357 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:16:15,360 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:16:15,423 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1658-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~15#1; [2025-03-03 14:16:15,423 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1686: #res#1 := ~retValue_acc~16#1; [2025-03-03 14:16:15,445 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2949: #res := ~retValue_acc~24; [2025-03-03 14:16:15,469 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2362: #res := ~retValue_acc~20; [2025-03-03 14:16:15,547 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1602-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~14#1; [2025-03-03 14:16:15,547 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1539-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~12#1; [2025-03-03 14:16:15,547 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1568: #res#1 := ~retValue_acc~13#1; [2025-03-03 14:16:15,553 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1731: #res := ~retValue_acc~18; [2025-03-03 14:16:15,668 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1134-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~9#1; [2025-03-03 14:16:15,668 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1147-1: isIdle_#res#1 := isIdle_~retValue_acc~10#1; [2025-03-03 14:16:15,671 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L971: #res := ~retValue_acc~5; [2025-03-03 14:16:15,675 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: #res := ~retValue_acc~2; [2025-03-03 14:16:15,694 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3027: #res := ~retValue_acc~26; [2025-03-03 14:16:15,697 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L804: #res := ~retValue_acc~3; [2025-03-03 14:16:15,700 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L962: #res := ~retValue_acc~4; [2025-03-03 14:16:15,829 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2988: #res := ~retValue_acc~25; [2025-03-03 14:16:15,846 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: #res := ~retValue_acc~6; [2025-03-03 14:16:15,923 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: #res := ~retValue_acc~1; [2025-03-03 14:16:16,016 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1499: #res := ~retValue_acc~11; [2025-03-03 14:16:16,065 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3074-1: valid_product_#res#1 := valid_product_~retValue_acc~28#1; [2025-03-03 14:16:16,065 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2909-1: main_#res#1 := main_~retValue_acc~23#1; [2025-03-03 14:16:16,072 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~0; [2025-03-03 14:16:16,143 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1717-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-03-03 14:16:16,268 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2025-03-03 14:16:16,268 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:16:16,294 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:16:16,294 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:16:16,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:16:16 BoogieIcfgContainer [2025-03-03 14:16:16,294 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:16:16,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:16:16,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:16:16,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:16:16,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:16:14" (1/3) ... [2025-03-03 14:16:16,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4618bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:16:16, skipping insertion in model container [2025-03-03 14:16:16,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:16:15" (2/3) ... [2025-03-03 14:16:16,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4618bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:16:16, skipping insertion in model container [2025-03-03 14:16:16,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:16:16" (3/3) ... [2025-03-03 14:16:16,302 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2025-03-03 14:16:16,313 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:16:16,316 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product24.cil.c that has 28 procedures, 595 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:16:16,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:16:16,380 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;@74f6fc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:16:16,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:16:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 595 states, 461 states have (on average 1.6746203904555315) internal successors, (772), 484 states have internal predecessors, (772), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:16:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-03 14:16:16,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:16,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:16,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:16,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1866174145, now seen corresponding path program 1 times [2025-03-03 14:16:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780256810] [2025-03-03 14:16:16,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:16,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:16,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-03 14:16:16,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-03 14:16:16,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:16,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:16,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:16,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780256810] [2025-03-03 14:16:16,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780256810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:16,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:16,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717619172] [2025-03-03 14:16:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:16,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:16,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:16,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:16,874 INFO L87 Difference]: Start difference. First operand has 595 states, 461 states have (on average 1.6746203904555315) internal successors, (772), 484 states have internal predecessors, (772), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:16,991 INFO L93 Difference]: Finished difference Result 1170 states and 1939 transitions. [2025-03-03 14:16:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2025-03-03 14:16:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:17,011 INFO L225 Difference]: With dead ends: 1170 [2025-03-03 14:16:17,011 INFO L226 Difference]: Without dead ends: 587 [2025-03-03 14:16:17,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,021 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 5 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:17,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2882 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-03 14:16:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-03 14:16:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 455 states have (on average 1.6725274725274726) internal successors, (761), 476 states have internal predecessors, (761), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 966 transitions. [2025-03-03 14:16:17,096 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 966 transitions. Word has length 60 [2025-03-03 14:16:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:17,096 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 966 transitions. [2025-03-03 14:16:17,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 966 transitions. [2025-03-03 14:16:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-03 14:16:17,101 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:17,101 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:16:17,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:17,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2007555856, now seen corresponding path program 1 times [2025-03-03 14:16:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599351459] [2025-03-03 14:16:17,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:17,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-03 14:16:17,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-03 14:16:17,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:17,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599351459] [2025-03-03 14:16:17,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599351459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:17,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:17,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271747788] [2025-03-03 14:16:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:17,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:17,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:17,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:17,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,277 INFO L87 Difference]: Start difference. First operand 587 states and 966 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:17,333 INFO L93 Difference]: Finished difference Result 1156 states and 1909 transitions. [2025-03-03 14:16:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-03-03 14:16:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:17,341 INFO L225 Difference]: With dead ends: 1156 [2025-03-03 14:16:17,342 INFO L226 Difference]: Without dead ends: 587 [2025-03-03 14:16:17,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,346 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 4 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:17,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2861 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-03 14:16:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-03 14:16:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 455 states have (on average 1.6703296703296704) internal successors, (760), 476 states have internal predecessors, (760), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 965 transitions. [2025-03-03 14:16:17,384 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 965 transitions. Word has length 63 [2025-03-03 14:16:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:17,385 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 965 transitions. [2025-03-03 14:16:17,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 965 transitions. [2025-03-03 14:16:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-03 14:16:17,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:17,388 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:17,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:16:17,388 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:17,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -382001253, now seen corresponding path program 1 times [2025-03-03 14:16:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:17,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406700261] [2025-03-03 14:16:17,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:17,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:17,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-03 14:16:17,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-03 14:16:17,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:17,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:17,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406700261] [2025-03-03 14:16:17,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406700261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:17,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498472041] [2025-03-03 14:16:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:17,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:17,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:17,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:17,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,546 INFO L87 Difference]: Start difference. First operand 587 states and 965 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:17,599 INFO L93 Difference]: Finished difference Result 1156 states and 1908 transitions. [2025-03-03 14:16:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-03-03 14:16:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:17,606 INFO L225 Difference]: With dead ends: 1156 [2025-03-03 14:16:17,606 INFO L226 Difference]: Without dead ends: 587 [2025-03-03 14:16:17,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,610 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 3 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:17,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2861 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-03 14:16:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-03 14:16:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 455 states have (on average 1.6681318681318682) internal successors, (759), 476 states have internal predecessors, (759), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 964 transitions. [2025-03-03 14:16:17,641 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 964 transitions. Word has length 64 [2025-03-03 14:16:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:17,642 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 964 transitions. [2025-03-03 14:16:17,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 964 transitions. [2025-03-03 14:16:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 14:16:17,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:17,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:17,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:16:17,646 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:17,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash 258629869, now seen corresponding path program 1 times [2025-03-03 14:16:17,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:17,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833386670] [2025-03-03 14:16:17,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:17,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:17,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 14:16:17,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 14:16:17,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:17,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833386670] [2025-03-03 14:16:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833386670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:17,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899194487] [2025-03-03 14:16:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:17,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:17,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:17,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,783 INFO L87 Difference]: Start difference. First operand 587 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:17,830 INFO L93 Difference]: Finished difference Result 1156 states and 1907 transitions. [2025-03-03 14:16:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-03-03 14:16:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:17,835 INFO L225 Difference]: With dead ends: 1156 [2025-03-03 14:16:17,835 INFO L226 Difference]: Without dead ends: 587 [2025-03-03 14:16:17,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,841 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 2 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:17,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2861 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-03 14:16:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-03 14:16:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 455 states have (on average 1.665934065934066) internal successors, (758), 476 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 963 transitions. [2025-03-03 14:16:17,864 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 963 transitions. Word has length 65 [2025-03-03 14:16:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:17,865 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 963 transitions. [2025-03-03 14:16:17,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 963 transitions. [2025-03-03 14:16:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 14:16:17,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:17,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:17,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:16:17,867 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:17,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 431404152, now seen corresponding path program 1 times [2025-03-03 14:16:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019725843] [2025-03-03 14:16:17,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:17,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 14:16:17,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 14:16:17,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:17,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019725843] [2025-03-03 14:16:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019725843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:17,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222939297] [2025-03-03 14:16:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:17,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:17,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:17,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:17,975 INFO L87 Difference]: Start difference. First operand 587 states and 963 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:18,013 INFO L93 Difference]: Finished difference Result 1156 states and 1906 transitions. [2025-03-03 14:16:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2025-03-03 14:16:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:18,018 INFO L225 Difference]: With dead ends: 1156 [2025-03-03 14:16:18,018 INFO L226 Difference]: Without dead ends: 587 [2025-03-03 14:16:18,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:18,021 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2861 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 14:16:18,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2861 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:18,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-03 14:16:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-03 14:16:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 455 states have (on average 1.6637362637362638) internal successors, (757), 476 states have internal predecessors, (757), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 962 transitions. [2025-03-03 14:16:18,042 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 962 transitions. Word has length 66 [2025-03-03 14:16:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:18,043 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 962 transitions. [2025-03-03 14:16:18,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 962 transitions. [2025-03-03 14:16:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 14:16:18,044 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:18,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:18,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:16:18,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:18,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1014481686, now seen corresponding path program 1 times [2025-03-03 14:16:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4294360] [2025-03-03 14:16:18,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:18,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 14:16:18,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 14:16:18,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:18,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4294360] [2025-03-03 14:16:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4294360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:18,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 14:16:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000614191] [2025-03-03 14:16:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:18,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 14:16:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:18,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 14:16:18,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:18,253 INFO L87 Difference]: Start difference. First operand 587 states and 962 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:18,347 INFO L93 Difference]: Finished difference Result 1122 states and 1838 transitions. [2025-03-03 14:16:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:16:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2025-03-03 14:16:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:18,351 INFO L225 Difference]: With dead ends: 1122 [2025-03-03 14:16:18,351 INFO L226 Difference]: Without dead ends: 602 [2025-03-03 14:16:18,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 14:16:18,353 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 91 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7517 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:18,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7517 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-03-03 14:16:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2025-03-03 14:16:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 465 states have (on average 1.6602150537634408) internal successors, (772), 488 states have internal predecessors, (772), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2025-03-03 14:16:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 981 transitions. [2025-03-03 14:16:18,373 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 981 transitions. Word has length 67 [2025-03-03 14:16:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:18,373 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 981 transitions. [2025-03-03 14:16:18,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 981 transitions. [2025-03-03 14:16:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 14:16:18,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:18,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:18,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:16:18,376 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:18,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1255021815, now seen corresponding path program 1 times [2025-03-03 14:16:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098467939] [2025-03-03 14:16:18,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:18,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 14:16:18,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 14:16:18,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:18,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098467939] [2025-03-03 14:16:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098467939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:16:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117101560] [2025-03-03 14:16:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:18,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:18,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:18,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:18,446 INFO L87 Difference]: Start difference. First operand 600 states and 981 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:18,481 INFO L93 Difference]: Finished difference Result 1174 states and 1932 transitions. [2025-03-03 14:16:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:16:18,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2025-03-03 14:16:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:18,485 INFO L225 Difference]: With dead ends: 1174 [2025-03-03 14:16:18,485 INFO L226 Difference]: Without dead ends: 581 [2025-03-03 14:16:18,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:16:18,487 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 0 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:18,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2863 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-03-03 14:16:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-03-03 14:16:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 449 states have (on average 1.6547884187082404) internal successors, (743), 470 states have internal predecessors, (743), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 948 transitions. [2025-03-03 14:16:18,506 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 948 transitions. Word has length 67 [2025-03-03 14:16:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:18,507 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 948 transitions. [2025-03-03 14:16:18,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 948 transitions. [2025-03-03 14:16:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:16:18,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:18,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:18,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:16:18,510 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 686098489, now seen corresponding path program 1 times [2025-03-03 14:16:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068462569] [2025-03-03 14:16:18,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:18,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:16:18,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:16:18,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:18,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068462569] [2025-03-03 14:16:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068462569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:18,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:18,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655330933] [2025-03-03 14:16:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:18,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:18,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:18,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:18,611 INFO L87 Difference]: Start difference. First operand 581 states and 948 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:18,769 INFO L93 Difference]: Finished difference Result 1119 states and 1830 transitions. [2025-03-03 14:16:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2025-03-03 14:16:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:18,775 INFO L225 Difference]: With dead ends: 1119 [2025-03-03 14:16:18,775 INFO L226 Difference]: Without dead ends: 590 [2025-03-03 14:16:18,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:18,778 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 55 mSDsluCounter, 3591 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:18,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4496 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:16:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-03-03 14:16:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-03-03 14:16:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 449 states have (on average 1.645879732739421) internal successors, (739), 470 states have internal predecessors, (739), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 944 transitions. [2025-03-03 14:16:18,797 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 944 transitions. Word has length 68 [2025-03-03 14:16:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:18,797 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 944 transitions. [2025-03-03 14:16:18,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 944 transitions. [2025-03-03 14:16:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 14:16:18,800 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:18,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:18,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:16:18,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:18,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash -654856287, now seen corresponding path program 1 times [2025-03-03 14:16:18,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:18,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343984007] [2025-03-03 14:16:18,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:18,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 14:16:18,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 14:16:18,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:18,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:18,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343984007] [2025-03-03 14:16:18,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343984007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:18,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:18,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913992828] [2025-03-03 14:16:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:18,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:18,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:18,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:18,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:18,921 INFO L87 Difference]: Start difference. First operand 581 states and 944 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:19,051 INFO L93 Difference]: Finished difference Result 1119 states and 1826 transitions. [2025-03-03 14:16:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2025-03-03 14:16:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:19,056 INFO L225 Difference]: With dead ends: 1119 [2025-03-03 14:16:19,056 INFO L226 Difference]: Without dead ends: 590 [2025-03-03 14:16:19,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:19,061 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 54 mSDsluCounter, 3591 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:19,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4496 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:16:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-03-03 14:16:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-03-03 14:16:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 449 states have (on average 1.6369710467706013) internal successors, (735), 470 states have internal predecessors, (735), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 940 transitions. [2025-03-03 14:16:19,083 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 940 transitions. Word has length 69 [2025-03-03 14:16:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:19,083 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 940 transitions. [2025-03-03 14:16:19,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 940 transitions. [2025-03-03 14:16:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:16:19,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:19,084 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:19,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:16:19,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:19,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1969057476, now seen corresponding path program 1 times [2025-03-03 14:16:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75338790] [2025-03-03 14:16:19,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:19,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:16:19,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:16:19,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:19,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75338790] [2025-03-03 14:16:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75338790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260424639] [2025-03-03 14:16:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:19,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:19,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:19,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:19,176 INFO L87 Difference]: Start difference. First operand 581 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:19,294 INFO L93 Difference]: Finished difference Result 1119 states and 1822 transitions. [2025-03-03 14:16:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2025-03-03 14:16:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:19,298 INFO L225 Difference]: With dead ends: 1119 [2025-03-03 14:16:19,298 INFO L226 Difference]: Without dead ends: 590 [2025-03-03 14:16:19,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:19,300 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 53 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4478 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:19,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4478 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:16:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-03-03 14:16:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2025-03-03 14:16:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 449 states have (on average 1.6280623608017817) internal successors, (731), 470 states have internal predecessors, (731), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 936 transitions. [2025-03-03 14:16:19,314 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 936 transitions. Word has length 70 [2025-03-03 14:16:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:19,314 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 936 transitions. [2025-03-03 14:16:19,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 936 transitions. [2025-03-03 14:16:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:16:19,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:19,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:19,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:16:19,315 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:19,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -245744213, now seen corresponding path program 1 times [2025-03-03 14:16:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758922305] [2025-03-03 14:16:19,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:19,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:16:19,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:16:19,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:19,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758922305] [2025-03-03 14:16:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758922305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:16:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599848650] [2025-03-03 14:16:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:19,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:16:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:19,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:16:19,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:19,402 INFO L87 Difference]: Start difference. First operand 581 states and 936 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:19,453 INFO L93 Difference]: Finished difference Result 1110 states and 1804 transitions. [2025-03-03 14:16:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:16:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2025-03-03 14:16:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:19,458 INFO L225 Difference]: With dead ends: 1110 [2025-03-03 14:16:19,458 INFO L226 Difference]: Without dead ends: 560 [2025-03-03 14:16:19,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:16:19,461 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 84 mSDsluCounter, 4552 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5477 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:19,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5477 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-03 14:16:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-03 14:16:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 428 states have (on average 1.6285046728971964) internal successors, (697), 449 states have internal predecessors, (697), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 902 transitions. [2025-03-03 14:16:19,502 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 902 transitions. Word has length 70 [2025-03-03 14:16:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:19,502 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 902 transitions. [2025-03-03 14:16:19,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 902 transitions. [2025-03-03 14:16:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 14:16:19,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:19,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:19,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 14:16:19,503 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:19,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1841069828, now seen corresponding path program 1 times [2025-03-03 14:16:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:19,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361006116] [2025-03-03 14:16:19,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:19,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 14:16:19,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 14:16:19,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:19,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:19,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361006116] [2025-03-03 14:16:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361006116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:19,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463923174] [2025-03-03 14:16:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:19,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:19,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:19,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:19,584 INFO L87 Difference]: Start difference. First operand 560 states and 902 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:19,642 INFO L93 Difference]: Finished difference Result 1089 states and 1770 transitions. [2025-03-03 14:16:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:19,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-03-03 14:16:19,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:19,646 INFO L225 Difference]: With dead ends: 1089 [2025-03-03 14:16:19,646 INFO L226 Difference]: Without dead ends: 560 [2025-03-03 14:16:19,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:19,648 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 17 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:19,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4416 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-03 14:16:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-03 14:16:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 428 states have (on average 1.6261682242990654) internal successors, (696), 449 states have internal predecessors, (696), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 901 transitions. [2025-03-03 14:16:19,662 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 901 transitions. Word has length 71 [2025-03-03 14:16:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:19,662 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 901 transitions. [2025-03-03 14:16:19,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 901 transitions. [2025-03-03 14:16:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 14:16:19,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:19,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:19,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 14:16:19,663 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:19,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1296623167, now seen corresponding path program 1 times [2025-03-03 14:16:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881038034] [2025-03-03 14:16:19,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:19,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 14:16:19,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 14:16:19,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:19,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:19,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:19,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881038034] [2025-03-03 14:16:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881038034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420495448] [2025-03-03 14:16:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:19,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:19,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:19,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:19,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:19,746 INFO L87 Difference]: Start difference. First operand 560 states and 901 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:19,800 INFO L93 Difference]: Finished difference Result 1089 states and 1769 transitions. [2025-03-03 14:16:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2025-03-03 14:16:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:19,804 INFO L225 Difference]: With dead ends: 1089 [2025-03-03 14:16:19,804 INFO L226 Difference]: Without dead ends: 560 [2025-03-03 14:16:19,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:16:19,806 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 16 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:19,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4416 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-03 14:16:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-03 14:16:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 428 states have (on average 1.6238317757009346) internal successors, (695), 449 states have internal predecessors, (695), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 900 transitions. [2025-03-03 14:16:19,820 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 900 transitions. Word has length 72 [2025-03-03 14:16:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:19,820 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 900 transitions. [2025-03-03 14:16:19,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 14:16:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 900 transitions. [2025-03-03 14:16:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-03 14:16:19,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:19,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:19,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 14:16:19,821 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1095630233, now seen corresponding path program 1 times [2025-03-03 14:16:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001195813] [2025-03-03 14:16:19,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:19,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:19,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-03 14:16:19,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-03 14:16:19,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:19,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001195813] [2025-03-03 14:16:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001195813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:16:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637966011] [2025-03-03 14:16:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:16:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:20,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:16:20,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:20,002 INFO L87 Difference]: Start difference. First operand 560 states and 900 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:20,094 INFO L93 Difference]: Finished difference Result 1083 states and 1757 transitions. [2025-03-03 14:16:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:16:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2025-03-03 14:16:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:20,099 INFO L225 Difference]: With dead ends: 1083 [2025-03-03 14:16:20,099 INFO L226 Difference]: Without dead ends: 560 [2025-03-03 14:16:20,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 14:16:20,102 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 6 mSDsluCounter, 7050 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7934 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:20,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7934 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:16:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-03 14:16:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-03 14:16:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 449 states have internal predecessors, (694), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-03 14:16:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 899 transitions. [2025-03-03 14:16:20,118 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 899 transitions. Word has length 73 [2025-03-03 14:16:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:20,118 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 899 transitions. [2025-03-03 14:16:20,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-03 14:16:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 899 transitions. [2025-03-03 14:16:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 14:16:20,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:20,120 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:20,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 14:16:20,120 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:20,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1740088462, now seen corresponding path program 1 times [2025-03-03 14:16:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:20,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761322889] [2025-03-03 14:16:20,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:20,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:20,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 14:16:20,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 14:16:20,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:20,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:16:20,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761322889] [2025-03-03 14:16:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761322889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:20,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:20,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:16:20,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617528819] [2025-03-03 14:16:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:20,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:20,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:20,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:16:20,325 INFO L87 Difference]: Start difference. First operand 560 states and 899 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-03 14:16:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:22,239 INFO L93 Difference]: Finished difference Result 1738 states and 2854 transitions. [2025-03-03 14:16:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 74 [2025-03-03 14:16:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:22,247 INFO L225 Difference]: With dead ends: 1738 [2025-03-03 14:16:22,247 INFO L226 Difference]: Without dead ends: 1223 [2025-03-03 14:16:22,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:16:22,250 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 2688 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:22,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2762 Valid, 1143 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 14:16:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2025-03-03 14:16:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1101. [2025-03-03 14:16:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 848 states have (on average 1.6415094339622642) internal successors, (1392), 878 states have internal predecessors, (1392), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2025-03-03 14:16:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1802 transitions. [2025-03-03 14:16:22,290 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1802 transitions. Word has length 74 [2025-03-03 14:16:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:22,290 INFO L471 AbstractCegarLoop]: Abstraction has 1101 states and 1802 transitions. [2025-03-03 14:16:22,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-03 14:16:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1802 transitions. [2025-03-03 14:16:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-03 14:16:22,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:22,294 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-03 14:16:22,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 14:16:22,294 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:22,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1423491147, now seen corresponding path program 1 times [2025-03-03 14:16:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:22,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864835650] [2025-03-03 14:16:22,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:22,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:22,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-03 14:16:22,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-03 14:16:22,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:22,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:22,597 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 14:16:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864835650] [2025-03-03 14:16:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864835650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:22,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:16:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-03 14:16:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086335071] [2025-03-03 14:16:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:22,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 14:16:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:22,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 14:16:22,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:16:22,598 INFO L87 Difference]: Start difference. First operand 1101 states and 1802 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-03 14:16:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:26,922 INFO L93 Difference]: Finished difference Result 4052 states and 6647 transitions. [2025-03-03 14:16:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-03 14:16:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 128 [2025-03-03 14:16:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:26,936 INFO L225 Difference]: With dead ends: 4052 [2025-03-03 14:16:26,936 INFO L226 Difference]: Without dead ends: 2996 [2025-03-03 14:16:26,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2025-03-03 14:16:26,941 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 2930 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 10290 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 4535 SdHoareTripleChecker+Invalid, 11307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 10290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:26,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3011 Valid, 4535 Invalid, 11307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 10290 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-03 14:16:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2025-03-03 14:16:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2902. [2025-03-03 14:16:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2161 states have (on average 1.6066635816751504) internal successors, (3472), 2237 states have internal predecessors, (3472), 610 states have call successors, (610), 113 states have call predecessors, (610), 130 states have return successors, (643), 584 states have call predecessors, (643), 605 states have call successors, (643) [2025-03-03 14:16:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4725 transitions. [2025-03-03 14:16:27,056 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4725 transitions. Word has length 128 [2025-03-03 14:16:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:27,056 INFO L471 AbstractCegarLoop]: Abstraction has 2902 states and 4725 transitions. [2025-03-03 14:16:27,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-03 14:16:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4725 transitions. [2025-03-03 14:16:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-03 14:16:27,060 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:27,060 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 14:16:27,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:16:27,060 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:27,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash 985646130, now seen corresponding path program 1 times [2025-03-03 14:16:27,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:27,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433271409] [2025-03-03 14:16:27,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:27,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:16:27,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:16:27,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:27,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:27,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:27,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433271409] [2025-03-03 14:16:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433271409] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:27,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013555609] [2025-03-03 14:16:27,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:27,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:27,184 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 14:16:27,185 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 14:16:27,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:16:27,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:16:27,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:27,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:27,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:16:27,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:27,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013555609] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:27,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-03 14:16:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716737645] [2025-03-03 14:16:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:27,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:27,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:27,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:27,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:27,586 INFO L87 Difference]: Start difference. First operand 2902 states and 4725 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:28,053 INFO L93 Difference]: Finished difference Result 5823 states and 9672 transitions. [2025-03-03 14:16:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:28,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2025-03-03 14:16:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:28,072 INFO L225 Difference]: With dead ends: 5823 [2025-03-03 14:16:28,072 INFO L226 Difference]: Without dead ends: 2966 [2025-03-03 14:16:28,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:28,086 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 849 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:28,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2239 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:16:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2025-03-03 14:16:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2966. [2025-03-03 14:16:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2217 states have (on average 1.609382047812359) internal successors, (3568), 2293 states have internal predecessors, (3568), 610 states have call successors, (610), 121 states have call predecessors, (610), 138 states have return successors, (649), 584 states have call predecessors, (649), 605 states have call successors, (649) [2025-03-03 14:16:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4827 transitions. [2025-03-03 14:16:28,200 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4827 transitions. Word has length 129 [2025-03-03 14:16:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:28,201 INFO L471 AbstractCegarLoop]: Abstraction has 2966 states and 4827 transitions. [2025-03-03 14:16:28,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4827 transitions. [2025-03-03 14:16:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:16:28,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:28,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 14:16:28,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:16:28,410 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,SelfDestructingSolverStorable16 [2025-03-03 14:16:28,410 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:28,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash 922964214, now seen corresponding path program 1 times [2025-03-03 14:16:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295624335] [2025-03-03 14:16:28,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:28,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:16:28,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:16:28,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:28,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295624335] [2025-03-03 14:16:28,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295624335] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414653701] [2025-03-03 14:16:28,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:28,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:28,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:28,544 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 14:16:28,546 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 14:16:28,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:16:28,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:16:28,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:28,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:28,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:16:28,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:28,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:28,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414653701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:28,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:28,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-03 14:16:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818797595] [2025-03-03 14:16:28,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:28,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:28,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:28,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:28,882 INFO L87 Difference]: Start difference. First operand 2966 states and 4827 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:29,295 INFO L93 Difference]: Finished difference Result 5951 states and 9858 transitions. [2025-03-03 14:16:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2025-03-03 14:16:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:29,312 INFO L225 Difference]: With dead ends: 5951 [2025-03-03 14:16:29,312 INFO L226 Difference]: Without dead ends: 3030 [2025-03-03 14:16:29,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:29,326 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 844 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:29,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2236 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:16:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2025-03-03 14:16:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2025-03-03 14:16:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2273 states have (on average 1.6119665640123184) internal successors, (3664), 2349 states have internal predecessors, (3664), 610 states have call successors, (610), 129 states have call predecessors, (610), 146 states have return successors, (655), 584 states have call predecessors, (655), 605 states have call successors, (655) [2025-03-03 14:16:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4929 transitions. [2025-03-03 14:16:29,485 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4929 transitions. Word has length 131 [2025-03-03 14:16:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:29,486 INFO L471 AbstractCegarLoop]: Abstraction has 3030 states and 4929 transitions. [2025-03-03 14:16:29,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4929 transitions. [2025-03-03 14:16:29,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:16:29,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:29,490 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 14:16:29,498 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 14:16:29,695 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,SelfDestructingSolverStorable17 [2025-03-03 14:16:29,695 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:29,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -848755566, now seen corresponding path program 1 times [2025-03-03 14:16:29,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:29,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638747145] [2025-03-03 14:16:29,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:29,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:16:29,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:16:29,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:29,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638747145] [2025-03-03 14:16:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638747145] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392811112] [2025-03-03 14:16:29,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:29,814 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 14:16:29,816 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 14:16:29,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:16:30,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:16:30,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:30,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:30,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:16:30,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:30,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:30,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392811112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:30,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:30,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-03 14:16:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335955456] [2025-03-03 14:16:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:30,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:30,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:30,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:30,153 INFO L87 Difference]: Start difference. First operand 3030 states and 4929 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:30,580 INFO L93 Difference]: Finished difference Result 6079 states and 10044 transitions. [2025-03-03 14:16:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2025-03-03 14:16:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:30,595 INFO L225 Difference]: With dead ends: 6079 [2025-03-03 14:16:30,596 INFO L226 Difference]: Without dead ends: 3094 [2025-03-03 14:16:30,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:30,606 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 841 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:30,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2233 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:16:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2025-03-03 14:16:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3094. [2025-03-03 14:16:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2329 states have (on average 1.614426792614856) internal successors, (3760), 2405 states have internal predecessors, (3760), 610 states have call successors, (610), 137 states have call predecessors, (610), 154 states have return successors, (661), 584 states have call predecessors, (661), 605 states have call successors, (661) [2025-03-03 14:16:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 5031 transitions. [2025-03-03 14:16:30,699 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 5031 transitions. Word has length 133 [2025-03-03 14:16:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:30,699 INFO L471 AbstractCegarLoop]: Abstraction has 3094 states and 5031 transitions. [2025-03-03 14:16:30,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 5031 transitions. [2025-03-03 14:16:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-03 14:16:30,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:30,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:30,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:16:30,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:30,904 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:30,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1188136944, now seen corresponding path program 1 times [2025-03-03 14:16:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662396825] [2025-03-03 14:16:30,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:30,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-03 14:16:30,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 14:16:30,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:30,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:31,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:31,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662396825] [2025-03-03 14:16:31,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662396825] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:31,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025633069] [2025-03-03 14:16:31,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:31,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:31,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:31,019 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 14:16:31,020 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 14:16:31,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-03 14:16:31,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 14:16:31,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:31,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:31,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:16:31,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:31,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025633069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:31,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:31,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-03 14:16:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143639540] [2025-03-03 14:16:31,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:31,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:31,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:31,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:31,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:31,347 INFO L87 Difference]: Start difference. First operand 3094 states and 5031 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:31,791 INFO L93 Difference]: Finished difference Result 6207 states and 10230 transitions. [2025-03-03 14:16:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2025-03-03 14:16:31,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:31,806 INFO L225 Difference]: With dead ends: 6207 [2025-03-03 14:16:31,806 INFO L226 Difference]: Without dead ends: 3158 [2025-03-03 14:16:31,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:31,816 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 820 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:31,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2230 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:16:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2025-03-03 14:16:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3158. [2025-03-03 14:16:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 2385 states have (on average 1.6167714884696016) internal successors, (3856), 2461 states have internal predecessors, (3856), 610 states have call successors, (610), 145 states have call predecessors, (610), 162 states have return successors, (667), 584 states have call predecessors, (667), 605 states have call successors, (667) [2025-03-03 14:16:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5133 transitions. [2025-03-03 14:16:31,909 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5133 transitions. Word has length 135 [2025-03-03 14:16:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:31,909 INFO L471 AbstractCegarLoop]: Abstraction has 3158 states and 5133 transitions. [2025-03-03 14:16:31,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5133 transitions. [2025-03-03 14:16:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:16:31,913 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:31,913 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 14:16:31,921 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 14:16:32,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:32,117 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:32,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1795225394, now seen corresponding path program 1 times [2025-03-03 14:16:32,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:32,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567528985] [2025-03-03 14:16:32,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:32,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:16:32,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:16:32,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:32,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567528985] [2025-03-03 14:16:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567528985] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166399928] [2025-03-03 14:16:32,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:32,220 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 14:16:32,222 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 14:16:32,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:16:32,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:16:32,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:32,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:32,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:16:32,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:16:32,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166399928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-03 14:16:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84191434] [2025-03-03 14:16:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:32,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:32,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:32,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:32,599 INFO L87 Difference]: Start difference. First operand 3158 states and 5133 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:16:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:32,874 INFO L93 Difference]: Finished difference Result 3270 states and 5318 transitions. [2025-03-03 14:16:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:16:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2025-03-03 14:16:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:32,897 INFO L225 Difference]: With dead ends: 3270 [2025-03-03 14:16:32,897 INFO L226 Difference]: Without dead ends: 3255 [2025-03-03 14:16:32,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:32,900 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 863 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:32,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1610 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:16:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2025-03-03 14:16:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3167. [2025-03-03 14:16:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 2394 states have (on average 1.614452798663325) internal successors, (3865), 2470 states have internal predecessors, (3865), 610 states have call successors, (610), 145 states have call predecessors, (610), 162 states have return successors, (667), 584 states have call predecessors, (667), 605 states have call successors, (667) [2025-03-03 14:16:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 5142 transitions. [2025-03-03 14:16:32,998 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 5142 transitions. Word has length 137 [2025-03-03 14:16:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:32,999 INFO L471 AbstractCegarLoop]: Abstraction has 3167 states and 5142 transitions. [2025-03-03 14:16:32,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:16:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 5142 transitions. [2025-03-03 14:16:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-03 14:16:33,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:33,002 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:33,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 14:16:33,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:33,203 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:33,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash -144638224, now seen corresponding path program 1 times [2025-03-03 14:16:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76044643] [2025-03-03 14:16:33,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:33,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 14:16:33,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 14:16:33,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:33,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:16:33,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:33,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76044643] [2025-03-03 14:16:33,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76044643] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:33,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334213803] [2025-03-03 14:16:33,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:33,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:33,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:33,325 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 14:16:33,327 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 14:16:33,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 14:16:33,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 14:16:33,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:33,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:33,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 14:16:33,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:16:33,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334213803] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-03 14:16:33,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145209885] [2025-03-03 14:16:33,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:33,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:16:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:33,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:16:33,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:16:33,713 INFO L87 Difference]: Start difference. First operand 3167 states and 5142 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:34,017 INFO L93 Difference]: Finished difference Result 3371 states and 5442 transitions. [2025-03-03 14:16:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2025-03-03 14:16:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:34,033 INFO L225 Difference]: With dead ends: 3371 [2025-03-03 14:16:34,033 INFO L226 Difference]: Without dead ends: 3356 [2025-03-03 14:16:34,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:16:34,036 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 826 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:34,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 3513 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:16:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2025-03-03 14:16:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3335. [2025-03-03 14:16:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3335 states, 2530 states have (on average 1.6098814229249012) internal successors, (4073), 2606 states have internal predecessors, (4073), 626 states have call successors, (626), 161 states have call predecessors, (626), 178 states have return successors, (693), 600 states have call predecessors, (693), 621 states have call successors, (693) [2025-03-03 14:16:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 5392 transitions. [2025-03-03 14:16:34,138 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 5392 transitions. Word has length 143 [2025-03-03 14:16:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:34,139 INFO L471 AbstractCegarLoop]: Abstraction has 3335 states and 5392 transitions. [2025-03-03 14:16:34,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:16:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 5392 transitions. [2025-03-03 14:16:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-03 14:16:34,143 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:34,143 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:34,150 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 14:16:34,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:34,343 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:34,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1285684015, now seen corresponding path program 1 times [2025-03-03 14:16:34,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:34,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923764185] [2025-03-03 14:16:34,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:34,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:34,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:16:34,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:16:34,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:34,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:16:34,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:34,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923764185] [2025-03-03 14:16:34,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923764185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:34,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559375918] [2025-03-03 14:16:34,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:34,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:34,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:34,463 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 14:16:34,465 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 14:16:34,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:16:34,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:16:34,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:34,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:34,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:16:34,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-03 14:16:34,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559375918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:16:34,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905593757] [2025-03-03 14:16:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:34,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:16:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:34,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:16:34,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:16:34,788 INFO L87 Difference]: Start difference. First operand 3335 states and 5392 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 14:16:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:35,171 INFO L93 Difference]: Finished difference Result 6645 states and 10955 transitions. [2025-03-03 14:16:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:16:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 14:16:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:35,186 INFO L225 Difference]: With dead ends: 6645 [2025-03-03 14:16:35,186 INFO L226 Difference]: Without dead ends: 3347 [2025-03-03 14:16:35,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:16:35,197 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 815 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:35,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2230 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:16:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2025-03-03 14:16:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2025-03-03 14:16:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2536 states have (on average 1.5910883280757098) internal successors, (4035), 2618 states have internal predecessors, (4035), 626 states have call successors, (626), 161 states have call predecessors, (626), 184 states have return successors, (699), 600 states have call predecessors, (699), 621 states have call successors, (699) [2025-03-03 14:16:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 5360 transitions. [2025-03-03 14:16:35,336 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 5360 transitions. Word has length 153 [2025-03-03 14:16:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 3347 states and 5360 transitions. [2025-03-03 14:16:35,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 14:16:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 5360 transitions. [2025-03-03 14:16:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-03 14:16:35,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:35,342 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:35,350 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 14:16:35,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:35,546 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:35,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1837145967, now seen corresponding path program 1 times [2025-03-03 14:16:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868658404] [2025-03-03 14:16:35,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:35,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:16:35,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:16:35,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:35,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868658404] [2025-03-03 14:16:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868658404] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325295267] [2025-03-03 14:16:35,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:35,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:35,785 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 14:16:35,787 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 14:16:35,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:16:36,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:16:36,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:36,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:36,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 14:16:36,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:16:36,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325295267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:36,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-03 14:16:36,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416682624] [2025-03-03 14:16:36,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:36,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:16:36,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:36,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:16:36,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:16:36,139 INFO L87 Difference]: Start difference. First operand 3347 states and 5360 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 14:16:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:38,015 INFO L93 Difference]: Finished difference Result 10935 states and 17823 transitions. [2025-03-03 14:16:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:16:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 153 [2025-03-03 14:16:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:38,049 INFO L225 Difference]: With dead ends: 10935 [2025-03-03 14:16:38,050 INFO L226 Difference]: Without dead ends: 7641 [2025-03-03 14:16:38,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:16:38,064 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 2171 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:38,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 2180 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 3559 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-03 14:16:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2025-03-03 14:16:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 7154. [2025-03-03 14:16:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7154 states, 5409 states have (on average 1.5847661305232021) internal successors, (8572), 5594 states have internal predecessors, (8572), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 430 states have return successors, (1664), 1290 states have call predecessors, (1664), 1309 states have call successors, (1664) [2025-03-03 14:16:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 11550 transitions. [2025-03-03 14:16:38,341 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 11550 transitions. Word has length 153 [2025-03-03 14:16:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:38,342 INFO L471 AbstractCegarLoop]: Abstraction has 7154 states and 11550 transitions. [2025-03-03 14:16:38,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 14:16:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 11550 transitions. [2025-03-03 14:16:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-03 14:16:38,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:38,348 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:38,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 14:16:38,548 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,SelfDestructingSolverStorable23 [2025-03-03 14:16:38,549 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:38,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash 907205474, now seen corresponding path program 1 times [2025-03-03 14:16:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16549666] [2025-03-03 14:16:38,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:38,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-03 14:16:38,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 14:16:38,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:38,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:38,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16549666] [2025-03-03 14:16:38,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16549666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689639315] [2025-03-03 14:16:38,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:38,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:38,779 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 14:16:38,781 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 14:16:38,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-03 14:16:39,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 14:16:39,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:39,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:39,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:16:39,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-03 14:16:39,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689639315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 14:16:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2505851] [2025-03-03 14:16:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:39,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:16:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:39,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:16:39,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:16:39,065 INFO L87 Difference]: Start difference. First operand 7154 states and 11550 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:16:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:39,423 INFO L93 Difference]: Finished difference Result 17491 states and 28536 transitions. [2025-03-03 14:16:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:16:39,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2025-03-03 14:16:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:39,477 INFO L225 Difference]: With dead ends: 17491 [2025-03-03 14:16:39,478 INFO L226 Difference]: Without dead ends: 10394 [2025-03-03 14:16:39,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 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 14:16:39,507 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 840 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2499 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 14:16:39,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2499 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:16:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10394 states. [2025-03-03 14:16:39,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10394 to 7142. [2025-03-03 14:16:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 5403 states have (on average 1.5843050157320007) internal successors, (8560), 5582 states have internal predecessors, (8560), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 424 states have return successors, (1628), 1290 states have call predecessors, (1628), 1309 states have call successors, (1628) [2025-03-03 14:16:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 11502 transitions. [2025-03-03 14:16:39,871 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 11502 transitions. Word has length 158 [2025-03-03 14:16:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:39,871 INFO L471 AbstractCegarLoop]: Abstraction has 7142 states and 11502 transitions. [2025-03-03 14:16:39,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:16:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 11502 transitions. [2025-03-03 14:16:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-03 14:16:39,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:39,875 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:39,883 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 14:16:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-03 14:16:40,076 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:40,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash -793535005, now seen corresponding path program 1 times [2025-03-03 14:16:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:40,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798717622] [2025-03-03 14:16:40,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:40,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:40,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-03 14:16:40,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 14:16:40,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:40,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:40,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798717622] [2025-03-03 14:16:40,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798717622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307948137] [2025-03-03 14:16:40,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:40,414 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 14:16:40,416 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 14:16:40,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-03 14:16:40,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 14:16:40,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:40,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:40,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:16:40,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:16:40,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307948137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:16:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764624951] [2025-03-03 14:16:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:40,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:40,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:40,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:16:40,820 INFO L87 Difference]: Start difference. First operand 7142 states and 11502 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:42,755 INFO L93 Difference]: Finished difference Result 19259 states and 31700 transitions. [2025-03-03 14:16:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:16:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2025-03-03 14:16:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:42,812 INFO L225 Difference]: With dead ends: 19259 [2025-03-03 14:16:42,812 INFO L226 Difference]: Without dead ends: 12162 [2025-03-03 14:16:42,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 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 14:16:42,837 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1964 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:42,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 941 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-03 14:16:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2025-03-03 14:16:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 11572. [2025-03-03 14:16:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11572 states, 8644 states have (on average 1.5739241092086997) internal successors, (13605), 8979 states have internal predecessors, (13605), 2232 states have call successors, (2232), 524 states have call predecessors, (2232), 695 states have return successors, (3026), 2230 states have call predecessors, (3026), 2227 states have call successors, (3026) [2025-03-03 14:16:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 18863 transitions. [2025-03-03 14:16:43,385 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 18863 transitions. Word has length 158 [2025-03-03 14:16:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:43,385 INFO L471 AbstractCegarLoop]: Abstraction has 11572 states and 18863 transitions. [2025-03-03 14:16:43,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 18863 transitions. [2025-03-03 14:16:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-03 14:16:43,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:43,389 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:16:43,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 14:16:43,591 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,SelfDestructingSolverStorable25 [2025-03-03 14:16:43,592 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:43,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1170006586, now seen corresponding path program 1 times [2025-03-03 14:16:43,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:43,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230066916] [2025-03-03 14:16:43,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:43,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:16:43,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:16:43,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:43,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230066916] [2025-03-03 14:16:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230066916] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614226505] [2025-03-03 14:16:43,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:43,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:43,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:43,838 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 14:16:43,840 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 14:16:43,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:16:44,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:16:44,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:44,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:44,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:16:44,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:16:44,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614226505] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:16:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817805433] [2025-03-03 14:16:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:44,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:44,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:44,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:16:44,186 INFO L87 Difference]: Start difference. First operand 11572 states and 18863 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:46,384 INFO L93 Difference]: Finished difference Result 34001 states and 57715 transitions. [2025-03-03 14:16:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:16:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2025-03-03 14:16:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:46,527 INFO L225 Difference]: With dead ends: 34001 [2025-03-03 14:16:46,527 INFO L226 Difference]: Without dead ends: 22474 [2025-03-03 14:16:46,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 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 14:16:46,595 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 1967 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:46,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 906 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 14:16:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22474 states. [2025-03-03 14:16:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22474 to 21415. [2025-03-03 14:16:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21415 states, 15711 states have (on average 1.563936095729107) internal successors, (24571), 16430 states have internal predecessors, (24571), 4424 states have call successors, (4424), 902 states have call predecessors, (4424), 1279 states have return successors, (6896), 4490 states have call predecessors, (6896), 4419 states have call successors, (6896) [2025-03-03 14:16:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21415 states to 21415 states and 35891 transitions. [2025-03-03 14:16:47,865 INFO L78 Accepts]: Start accepts. Automaton has 21415 states and 35891 transitions. Word has length 159 [2025-03-03 14:16:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:47,865 INFO L471 AbstractCegarLoop]: Abstraction has 21415 states and 35891 transitions. [2025-03-03 14:16:47,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 21415 states and 35891 transitions. [2025-03-03 14:16:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-03 14:16:47,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:47,871 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:16:47,879 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 14:16:48,071 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,SelfDestructingSolverStorable26 [2025-03-03 14:16:48,071 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:48,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1910249981, now seen corresponding path program 1 times [2025-03-03 14:16:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876952182] [2025-03-03 14:16:48,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:48,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:16:48,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:16:48,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:48,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876952182] [2025-03-03 14:16:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876952182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348794097] [2025-03-03 14:16:48,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:48,303 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 14:16:48,304 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 14:16:48,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-03 14:16:48,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-03 14:16:48,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:48,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:48,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:16:48,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:16:48,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:48,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348794097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:48,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:48,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:16:48,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020409410] [2025-03-03 14:16:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:48,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:48,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:48,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:48,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:16:48,625 INFO L87 Difference]: Start difference. First operand 21415 states and 35891 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:16:52,304 INFO L93 Difference]: Finished difference Result 67134 states and 120416 transitions. [2025-03-03 14:16:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:16:52,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2025-03-03 14:16:52,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:16:52,670 INFO L225 Difference]: With dead ends: 67134 [2025-03-03 14:16:52,670 INFO L226 Difference]: Without dead ends: 45764 [2025-03-03 14:16:52,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 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 14:16:52,807 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 1954 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:16:52,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 908 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 14:16:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45764 states. [2025-03-03 14:16:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45764 to 43732. [2025-03-03 14:16:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43732 states, 31404 states have (on average 1.554292446822061) internal successors, (48811), 33077 states have internal predecessors, (48811), 9772 states have call successors, (9772), 1658 states have call predecessors, (9772), 2555 states have return successors, (18162), 10046 states have call predecessors, (18162), 9767 states have call successors, (18162) [2025-03-03 14:16:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43732 states to 43732 states and 76745 transitions. [2025-03-03 14:16:55,381 INFO L78 Accepts]: Start accepts. Automaton has 43732 states and 76745 transitions. Word has length 160 [2025-03-03 14:16:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:16:55,381 INFO L471 AbstractCegarLoop]: Abstraction has 43732 states and 76745 transitions. [2025-03-03 14:16:55,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:16:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43732 states and 76745 transitions. [2025-03-03 14:16:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-03 14:16:55,387 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:16:55,387 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:16:55,395 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 14:16:55,587 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,SelfDestructingSolverStorable27 [2025-03-03 14:16:55,588 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:16:55,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:16:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -912012332, now seen corresponding path program 1 times [2025-03-03 14:16:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:16:55,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597122428] [2025-03-03 14:16:55,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:16:55,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-03 14:16:55,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-03 14:16:55,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:55,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:16:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:16:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597122428] [2025-03-03 14:16:56,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597122428] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:16:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353167728] [2025-03-03 14:16:56,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:16:56,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:16:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:16:56,183 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 14:16:56,184 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 14:16:56,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-03 14:16:56,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-03 14:16:56,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:16:56,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:16:56,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:16:56,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:16:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:16:56,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:16:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353167728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:16:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:16:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:16:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168421414] [2025-03-03 14:16:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:16:56,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:16:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:16:56,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:16:56,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:16:56,654 INFO L87 Difference]: Start difference. First operand 43732 states and 76745 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:17:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:03,599 INFO L93 Difference]: Finished difference Result 143193 states and 280093 transitions. [2025-03-03 14:17:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:03,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2025-03-03 14:17:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:04,352 INFO L225 Difference]: With dead ends: 143193 [2025-03-03 14:17:04,352 INFO L226 Difference]: Without dead ends: 99506 [2025-03-03 14:17:04,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:17:04,650 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1941 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:04,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 901 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 14:17:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99506 states. [2025-03-03 14:17:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99506 to 95661. [2025-03-03 14:17:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95661 states, 67137 states have (on average 1.5447666711351415) internal successors, (103711), 71204 states have internal predecessors, (103711), 23128 states have call successors, (23128), 3170 states have call predecessors, (23128), 5395 states have return successors, (52816), 24034 states have call predecessors, (52816), 23123 states have call successors, (52816) [2025-03-03 14:17:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95661 states to 95661 states and 179655 transitions. [2025-03-03 14:17:12,277 INFO L78 Accepts]: Start accepts. Automaton has 95661 states and 179655 transitions. Word has length 161 [2025-03-03 14:17:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:12,277 INFO L471 AbstractCegarLoop]: Abstraction has 95661 states and 179655 transitions. [2025-03-03 14:17:12,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:17:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 95661 states and 179655 transitions. [2025-03-03 14:17:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-03 14:17:12,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:12,284 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:12,292 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 14:17:12,484 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,SelfDestructingSolverStorable28 [2025-03-03 14:17:12,485 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:12,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1792165399, now seen corresponding path program 1 times [2025-03-03 14:17:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748117367] [2025-03-03 14:17:12,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:12,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-03 14:17:12,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-03 14:17:12,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:12,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:17:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748117367] [2025-03-03 14:17:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748117367] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473221142] [2025-03-03 14:17:12,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:12,793 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 14:17:12,794 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 14:17:12,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-03 14:17:13,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-03 14:17:13,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:13,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:13,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:17:13,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:17:13,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:13,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473221142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:13,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:13,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:17:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752324138] [2025-03-03 14:17:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:13,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:13,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:13,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:17:13,158 INFO L87 Difference]: Start difference. First operand 95661 states and 179655 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)