./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product09.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 e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:31:46,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:31:46,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:31:46,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:31:46,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:31:46,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:31:46,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:31:46,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:31:46,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:31:46,205 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:31:46,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:31:46,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:31:46,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:31:46,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:31:46,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:31:46,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:31:46,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:31:46,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:46,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:31:46,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:31:46,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:31:46,210 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 -> e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 [2025-03-16 18:31:46,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:31:46,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:31:46,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:31:46,462 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:31:46,462 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:31:46,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2025-03-16 18:31:47,682 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e97537e/913e6433925446b4b6e55e7fccf23bce/FLAG06bb9ff4a [2025-03-16 18:31:48,016 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:31:48,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2025-03-16 18:31:48,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e97537e/913e6433925446b4b6e55e7fccf23bce/FLAG06bb9ff4a [2025-03-16 18:31:48,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e97537e/913e6433925446b4b6e55e7fccf23bce [2025-03-16 18:31:48,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:31:48,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:31:48,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:48,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:31:48,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:31:48,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3491a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48, skipping insertion in model container [2025-03-16 18:31:48,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,108 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:31:48,203 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2025-03-16 18:31:48,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:48,444 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:31:48,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [423] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [461] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [822] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1005] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1097] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1768] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3206] [2025-03-16 18:31:48,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3219] [2025-03-16 18:31:48,457 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2025-03-16 18:31:48,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:31:48,584 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:31:48,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48 WrapperNode [2025-03-16 18:31:48,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:31:48,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:48,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:31:48,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:31:48,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,658 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 797 [2025-03-16 18:31:48,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:31:48,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:31:48,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:31:48,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:31:48,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,711 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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]. [2025-03-16 18:31:48,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,732 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:31:48,758 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:31:48,759 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:31:48,759 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:31:48,760 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (1/1) ... [2025-03-16 18:31:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:31:48,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:48,788 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) [2025-03-16 18:31:48,791 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 [2025-03-16 18:31:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-16 18:31:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-16 18:31:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:31:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:31:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:31:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:31:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:31:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:31:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:31:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:31:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:31:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:31:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:31:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:31:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:31:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:31:48,813 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:31:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:31:48,814 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:31:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:31:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:31:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:31:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:31:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:31:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:31:48,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:31:48,972 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:31:48,973 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:31:49,031 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3335: #res := ~retValue_acc~25; [2025-03-16 18:31:49,034 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1841: #res := ~retValue_acc~10; [2025-03-16 18:31:49,302 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2527: #res := ~retValue_acc~18; [2025-03-16 18:31:49,355 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2631: #res := ~retValue_acc~21; [2025-03-16 18:31:49,365 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3296: #res := ~retValue_acc~24; [2025-03-16 18:31:49,404 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2082-1: isEmpty_#res#1 := isEmpty_~retValue_acc~15#1; [2025-03-16 18:31:49,453 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2162-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~16#1; [2025-03-16 18:31:49,453 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2175-1: isIdle_#res#1 := isIdle_~retValue_acc~17#1; [2025-03-16 18:31:49,584 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2617-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~20#1; [2025-03-16 18:31:49,585 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1990-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~11#1; [2025-03-16 18:31:49,585 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2033-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~13#1; [2025-03-16 18:31:49,627 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1454: #res := ~retValue_acc~8; [2025-03-16 18:31:49,683 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L819-1: main_#res#1 := main_~retValue_acc~6#1; [2025-03-16 18:31:49,683 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L458-1: valid_product_#res#1 := valid_product_~retValue_acc~4#1; [2025-03-16 18:31:49,692 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1214: #res := ~retValue_acc~7; [2025-03-16 18:31:49,695 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1999: #res := ~retValue_acc~12; [2025-03-16 18:31:49,701 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1765: #res := ~retValue_acc~9; [2025-03-16 18:31:49,823 INFO L? ?]: Removed 421 outVars from TransFormulas that were not future-live. [2025-03-16 18:31:49,823 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:31:49,846 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:31:49,850 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:31:49,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:49 BoogieIcfgContainer [2025-03-16 18:31:49,850 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:31:49,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:31:49,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:31:49,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:31:49,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:31:48" (1/3) ... [2025-03-16 18:31:49,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c438c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:49, skipping insertion in model container [2025-03-16 18:31:49,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:31:48" (2/3) ... [2025-03-16 18:31:49,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c438c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:31:49, skipping insertion in model container [2025-03-16 18:31:49,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:31:49" (3/3) ... [2025-03-16 18:31:49,860 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2025-03-16 18:31:49,869 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:31:49,872 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product09.cil.c that has 22 procedures, 525 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:31:49,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:31:49,941 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;@1d80b36b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:31:49,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:31:49,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 525 states, 413 states have (on average 1.7239709443099274) internal successors, (712), 434 states have internal predecessors, (712), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-16 18:31:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 18:31:49,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:49,960 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:49,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:49,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2107942997, now seen corresponding path program 1 times [2025-03-16 18:31:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911591442] [2025-03-16 18:31:49,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:50,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 18:31:50,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 18:31:50,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911591442] [2025-03-16 18:31:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911591442] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490021397] [2025-03-16 18:31:50,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:50,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:50,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:50,452 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) [2025-03-16 18:31:50,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:31:50,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 18:31:50,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 18:31:50,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:50,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:50,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 18:31:50,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:31:50,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490021397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:50,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-16 18:31:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558671159] [2025-03-16 18:31:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:50,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 18:31:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:50,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 18:31:50,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:50,835 INFO L87 Difference]: Start difference. First operand has 525 states, 413 states have (on average 1.7239709443099274) internal successors, (712), 434 states have internal predecessors, (712), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:31:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:50,877 INFO L93 Difference]: Finished difference Result 545 states and 919 transitions. [2025-03-16 18:31:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 18:31:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 92 [2025-03-16 18:31:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:50,901 INFO L225 Difference]: With dead ends: 545 [2025-03-16 18:31:50,901 INFO L226 Difference]: Without dead ends: 518 [2025-03-16 18:31:50,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:50,905 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:50,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2025-03-16 18:31:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2025-03-16 18:31:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 408 states have (on average 1.7230392156862746) internal successors, (703), 427 states have internal predecessors, (703), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 876 transitions. [2025-03-16 18:31:50,986 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 876 transitions. Word has length 92 [2025-03-16 18:31:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:50,987 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 876 transitions. [2025-03-16 18:31:50,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:31:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 876 transitions. [2025-03-16 18:31:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 18:31:50,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:50,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:51,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:51,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-16 18:31:51,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:51,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash -281674472, now seen corresponding path program 1 times [2025-03-16 18:31:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:51,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180119218] [2025-03-16 18:31:51,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:51,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:31:51,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:31:51,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180119218] [2025-03-16 18:31:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180119218] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945377394] [2025-03-16 18:31:51,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:51,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:51,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:51,366 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) [2025-03-16 18:31:51,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:31:51,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:31:51,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:31:51,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:51,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:51,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:51,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:51,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945377394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:51,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:51,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:51,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48587880] [2025-03-16 18:31:51,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:51,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:51,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:51,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:51,723 INFO L87 Difference]: Start difference. First operand 518 states and 876 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:51,801 INFO L93 Difference]: Finished difference Result 1032 states and 1749 transitions. [2025-03-16 18:31:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:51,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2025-03-16 18:31:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:51,807 INFO L225 Difference]: With dead ends: 1032 [2025-03-16 18:31:51,807 INFO L226 Difference]: Without dead ends: 518 [2025-03-16 18:31:51,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:51,810 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 5 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:51,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2586 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2025-03-16 18:31:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2025-03-16 18:31:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 408 states have (on average 1.7205882352941178) internal successors, (702), 427 states have internal predecessors, (702), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 875 transitions. [2025-03-16 18:31:51,836 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 875 transitions. Word has length 93 [2025-03-16 18:31:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:51,837 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 875 transitions. [2025-03-16 18:31:51,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 875 transitions. [2025-03-16 18:31:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-16 18:31:51,841 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:51,841 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:51,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:52,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-16 18:31:52,042 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:52,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash -695350322, now seen corresponding path program 1 times [2025-03-16 18:31:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717926410] [2025-03-16 18:31:52,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:52,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 18:31:52,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 18:31:52,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:52,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:52,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717926410] [2025-03-16 18:31:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717926410] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811487452] [2025-03-16 18:31:52,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:52,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:52,204 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) [2025-03-16 18:31:52,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:31:52,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 18:31:52,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 18:31:52,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:52,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:52,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:52,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:52,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811487452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900620037] [2025-03-16 18:31:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:52,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:52,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:52,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:52,513 INFO L87 Difference]: Start difference. First operand 518 states and 875 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:52,579 INFO L93 Difference]: Finished difference Result 1032 states and 1747 transitions. [2025-03-16 18:31:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2025-03-16 18:31:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:52,601 INFO L225 Difference]: With dead ends: 1032 [2025-03-16 18:31:52,602 INFO L226 Difference]: Without dead ends: 518 [2025-03-16 18:31:52,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:52,606 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 4 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:52,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2586 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2025-03-16 18:31:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2025-03-16 18:31:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 408 states have (on average 1.7181372549019607) internal successors, (701), 427 states have internal predecessors, (701), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 874 transitions. [2025-03-16 18:31:52,631 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 874 transitions. Word has length 95 [2025-03-16 18:31:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:52,631 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 874 transitions. [2025-03-16 18:31:52,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 874 transitions. [2025-03-16 18:31:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-16 18:31:52,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:52,634 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:52,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:52,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:52,838 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:52,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1485397304, now seen corresponding path program 1 times [2025-03-16 18:31:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523517554] [2025-03-16 18:31:52,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:52,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 18:31:52,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 18:31:52,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:52,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523517554] [2025-03-16 18:31:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523517554] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648639368] [2025-03-16 18:31:52,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:52,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:52,966 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) [2025-03-16 18:31:52,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:31:53,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 18:31:53,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 18:31:53,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:53,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:53,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:53,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:53,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648639368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:53,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630998935] [2025-03-16 18:31:53,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:53,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:53,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:53,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:53,259 INFO L87 Difference]: Start difference. First operand 518 states and 874 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:53,319 INFO L93 Difference]: Finished difference Result 1039 states and 1754 transitions. [2025-03-16 18:31:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2025-03-16 18:31:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:53,324 INFO L225 Difference]: With dead ends: 1039 [2025-03-16 18:31:53,324 INFO L226 Difference]: Without dead ends: 527 [2025-03-16 18:31:53,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:53,328 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 13 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:53,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2583 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-16 18:31:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2025-03-16 18:31:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 416 states have (on average 1.7139423076923077) internal successors, (713), 435 states have internal predecessors, (713), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 886 transitions. [2025-03-16 18:31:53,354 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 886 transitions. Word has length 97 [2025-03-16 18:31:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:53,354 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 886 transitions. [2025-03-16 18:31:53,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 886 transitions. [2025-03-16 18:31:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 18:31:53,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:53,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:53,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 18:31:53,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:53,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:53,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash -284636613, now seen corresponding path program 1 times [2025-03-16 18:31:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:53,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574415275] [2025-03-16 18:31:53,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:53,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:31:53,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:31:53,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:53,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574415275] [2025-03-16 18:31:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574415275] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855135318] [2025-03-16 18:31:53,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:53,659 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) [2025-03-16 18:31:53,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:31:53,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:31:53,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:31:53,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:53,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:53,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:53,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:53,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:53,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855135318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:53,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:53,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:53,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367634072] [2025-03-16 18:31:53,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:53,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:53,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:53,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:53,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:53,937 INFO L87 Difference]: Start difference. First operand 527 states and 886 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:53,995 INFO L93 Difference]: Finished difference Result 1041 states and 1755 transitions. [2025-03-16 18:31:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-03-16 18:31:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:53,999 INFO L225 Difference]: With dead ends: 1041 [2025-03-16 18:31:54,000 INFO L226 Difference]: Without dead ends: 527 [2025-03-16 18:31:54,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:54,002 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 11 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:54,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2583 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-16 18:31:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2025-03-16 18:31:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 416 states have (on average 1.7115384615384615) internal successors, (712), 435 states have internal predecessors, (712), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 885 transitions. [2025-03-16 18:31:54,027 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 885 transitions. Word has length 98 [2025-03-16 18:31:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:54,028 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 885 transitions. [2025-03-16 18:31:54,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 885 transitions. [2025-03-16 18:31:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 18:31:54,031 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:54,031 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:54,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 18:31:54,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:54,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:54,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1195210123, now seen corresponding path program 1 times [2025-03-16 18:31:54,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:54,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527110215] [2025-03-16 18:31:54,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:54,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 18:31:54,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 18:31:54,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:54,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527110215] [2025-03-16 18:31:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527110215] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198982409] [2025-03-16 18:31:54,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:54,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:54,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:54,329 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) [2025-03-16 18:31:54,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:31:54,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 18:31:54,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 18:31:54,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:54,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:54,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:54,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:54,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198982409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:54,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708979974] [2025-03-16 18:31:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:54,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:54,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:54,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:54,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:54,624 INFO L87 Difference]: Start difference. First operand 527 states and 885 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:54,680 INFO L93 Difference]: Finished difference Result 1041 states and 1754 transitions. [2025-03-16 18:31:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2025-03-16 18:31:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:54,686 INFO L225 Difference]: With dead ends: 1041 [2025-03-16 18:31:54,686 INFO L226 Difference]: Without dead ends: 527 [2025-03-16 18:31:54,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:54,690 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 10 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:54,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2583 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-16 18:31:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2025-03-16 18:31:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 416 states have (on average 1.7091346153846154) internal successors, (711), 435 states have internal predecessors, (711), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-16 18:31:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 884 transitions. [2025-03-16 18:31:54,709 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 884 transitions. Word has length 99 [2025-03-16 18:31:54,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:54,709 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 884 transitions. [2025-03-16 18:31:54,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 884 transitions. [2025-03-16 18:31:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-16 18:31:54,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:54,711 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:54,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:54,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:54,914 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:54,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1232314792, now seen corresponding path program 1 times [2025-03-16 18:31:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703071319] [2025-03-16 18:31:54,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:54,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:31:54,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:31:54,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:54,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:31:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703071319] [2025-03-16 18:31:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703071319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887027339] [2025-03-16 18:31:55,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:55,059 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) [2025-03-16 18:31:55,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 18:31:55,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:31:55,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:31:55,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:31:55,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:55,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887027339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-16 18:31:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584660993] [2025-03-16 18:31:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:55,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:55,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:31:55,363 INFO L87 Difference]: Start difference. First operand 527 states and 884 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:55,439 INFO L93 Difference]: Finished difference Result 1060 states and 1784 transitions. [2025-03-16 18:31:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:55,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2025-03-16 18:31:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:55,444 INFO L225 Difference]: With dead ends: 1060 [2025-03-16 18:31:55,444 INFO L226 Difference]: Without dead ends: 550 [2025-03-16 18:31:55,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:31:55,446 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 100 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5098 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:55,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5098 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-16 18:31:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2025-03-16 18:31:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 432 states have (on average 1.7060185185185186) internal successors, (737), 453 states have internal predecessors, (737), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2025-03-16 18:31:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 915 transitions. [2025-03-16 18:31:55,463 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 915 transitions. Word has length 100 [2025-03-16 18:31:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:55,463 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 915 transitions. [2025-03-16 18:31:55,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 915 transitions. [2025-03-16 18:31:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-16 18:31:55,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:55,466 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:55,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:55,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:55,666 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:55,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash 417822007, now seen corresponding path program 1 times [2025-03-16 18:31:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050504139] [2025-03-16 18:31:55,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:55,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:31:55,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:31:55,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:31:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:55,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050504139] [2025-03-16 18:31:55,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050504139] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:55,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147990562] [2025-03-16 18:31:55,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:55,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:55,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:55,757 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) [2025-03-16 18:31:55,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 18:31:55,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:31:55,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:31:55,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:55,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:56,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:56,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147990562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:56,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:56,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587372586] [2025-03-16 18:31:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:56,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:56,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:56,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:56,026 INFO L87 Difference]: Start difference. First operand 546 states and 915 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:56,132 INFO L93 Difference]: Finished difference Result 1116 states and 1885 transitions. [2025-03-16 18:31:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2025-03-16 18:31:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:56,136 INFO L225 Difference]: With dead ends: 1116 [2025-03-16 18:31:56,136 INFO L226 Difference]: Without dead ends: 561 [2025-03-16 18:31:56,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:56,139 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 76 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:56,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2474 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-16 18:31:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 546. [2025-03-16 18:31:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 453 states have internal predecessors, (732), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2025-03-16 18:31:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 910 transitions. [2025-03-16 18:31:56,154 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 910 transitions. Word has length 100 [2025-03-16 18:31:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:56,154 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 910 transitions. [2025-03-16 18:31:56,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 910 transitions. [2025-03-16 18:31:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-16 18:31:56,156 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:56,156 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:56,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:56,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-16 18:31:56,361 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:56,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1208204927, now seen corresponding path program 1 times [2025-03-16 18:31:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125090634] [2025-03-16 18:31:56,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:56,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 18:31:56,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 18:31:56,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:31:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125090634] [2025-03-16 18:31:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125090634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468736602] [2025-03-16 18:31:56,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:56,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:56,428 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) [2025-03-16 18:31:56,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 18:31:56,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 18:31:56,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 18:31:56,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:56,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:56,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:56,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:56,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468736602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079851711] [2025-03-16 18:31:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:56,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:56,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:56,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:56,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:56,712 INFO L87 Difference]: Start difference. First operand 546 states and 910 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:56,823 INFO L93 Difference]: Finished difference Result 1116 states and 1875 transitions. [2025-03-16 18:31:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:31:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2025-03-16 18:31:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:56,827 INFO L225 Difference]: With dead ends: 1116 [2025-03-16 18:31:56,827 INFO L226 Difference]: Without dead ends: 561 [2025-03-16 18:31:56,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:56,830 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 75 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:56,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2474 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-16 18:31:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 546. [2025-03-16 18:31:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 453 states have internal predecessors, (727), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (88), 83 states have call predecessors, (88), 85 states have call successors, (88) [2025-03-16 18:31:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 905 transitions. [2025-03-16 18:31:56,849 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 905 transitions. Word has length 102 [2025-03-16 18:31:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:56,849 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 905 transitions. [2025-03-16 18:31:56,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 905 transitions. [2025-03-16 18:31:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-16 18:31:56,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:56,851 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:56,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:57,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:57,056 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:57,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2020345641, now seen corresponding path program 1 times [2025-03-16 18:31:57,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641378889] [2025-03-16 18:31:57,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:57,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 18:31:57,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 18:31:57,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:57,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:31:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641378889] [2025-03-16 18:31:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641378889] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791514146] [2025-03-16 18:31:57,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:57,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:57,123 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) [2025-03-16 18:31:57,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 18:31:57,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 18:31:57,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 18:31:57,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:57,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:57,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:57,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:57,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791514146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:57,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256078024] [2025-03-16 18:31:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:57,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:57,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:57,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:57,414 INFO L87 Difference]: Start difference. First operand 546 states and 905 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:57,563 INFO L93 Difference]: Finished difference Result 1167 states and 1947 transitions. [2025-03-16 18:31:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2025-03-16 18:31:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:57,569 INFO L225 Difference]: With dead ends: 1167 [2025-03-16 18:31:57,569 INFO L226 Difference]: Without dead ends: 642 [2025-03-16 18:31:57,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:57,572 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 130 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:57,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2505 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-16 18:31:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 597. [2025-03-16 18:31:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 482 states have (on average 1.6846473029045643) internal successors, (812), 503 states have internal predecessors, (812), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2025-03-16 18:31:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 989 transitions. [2025-03-16 18:31:57,597 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 989 transitions. Word has length 104 [2025-03-16 18:31:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:57,597 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 989 transitions. [2025-03-16 18:31:57,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 989 transitions. [2025-03-16 18:31:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:31:57,600 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:57,600 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:57,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-16 18:31:57,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 18:31:57,801 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:57,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash 579930121, now seen corresponding path program 1 times [2025-03-16 18:31:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575114730] [2025-03-16 18:31:57,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:57,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:57,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:57,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:57,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:31:57,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575114730] [2025-03-16 18:31:57,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575114730] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396005263] [2025-03-16 18:31:57,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:57,924 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) [2025-03-16 18:31:57,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 18:31:58,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:58,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:58,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:58,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:31:58,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:58,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396005263] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:58,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:31:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754722737] [2025-03-16 18:31:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:58,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:31:58,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:58,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:31:58,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:31:58,255 INFO L87 Difference]: Start difference. First operand 597 states and 989 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:58,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:58,376 INFO L93 Difference]: Finished difference Result 1129 states and 1876 transitions. [2025-03-16 18:31:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:31:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2025-03-16 18:31:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:58,380 INFO L225 Difference]: With dead ends: 1129 [2025-03-16 18:31:58,380 INFO L226 Difference]: Without dead ends: 619 [2025-03-16 18:31:58,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:31:58,383 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 113 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:58,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5819 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2025-03-16 18:31:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 597. [2025-03-16 18:31:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 482 states have (on average 1.6846473029045643) internal successors, (812), 503 states have internal predecessors, (812), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2025-03-16 18:31:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 989 transitions. [2025-03-16 18:31:58,400 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 989 transitions. Word has length 105 [2025-03-16 18:31:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:58,400 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 989 transitions. [2025-03-16 18:31:58,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 989 transitions. [2025-03-16 18:31:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:31:58,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:58,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:58,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 18:31:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:31:58,605 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1196033018, now seen corresponding path program 1 times [2025-03-16 18:31:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763187271] [2025-03-16 18:31:58,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:58,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:58,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:58,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:58,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:58,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:31:58,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:58,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763187271] [2025-03-16 18:31:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763187271] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:58,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001452177] [2025-03-16 18:31:58,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:58,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:58,679 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) [2025-03-16 18:31:58,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 18:31:58,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:58,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:58,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:58,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:58,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:31:58,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:31:58,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001452177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:58,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:31:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198373264] [2025-03-16 18:31:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:58,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:31:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:58,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:31:58,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:31:58,953 INFO L87 Difference]: Start difference. First operand 597 states and 989 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:59,080 INFO L93 Difference]: Finished difference Result 1170 states and 1948 transitions. [2025-03-16 18:31:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:31:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2025-03-16 18:31:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:59,085 INFO L225 Difference]: With dead ends: 1170 [2025-03-16 18:31:59,085 INFO L226 Difference]: Without dead ends: 630 [2025-03-16 18:31:59,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:31:59,087 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 124 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:59,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2478 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:31:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-03-16 18:31:59,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 597. [2025-03-16 18:31:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 482 states have (on average 1.6742738589211619) internal successors, (807), 503 states have internal predecessors, (807), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2025-03-16 18:31:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 984 transitions. [2025-03-16 18:31:59,103 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 984 transitions. Word has length 105 [2025-03-16 18:31:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:59,103 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 984 transitions. [2025-03-16 18:31:59,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:31:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 984 transitions. [2025-03-16 18:31:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:31:59,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:59,106 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:59,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 18:31:59,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:31:59,310 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:59,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash 138175626, now seen corresponding path program 1 times [2025-03-16 18:31:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:59,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33935368] [2025-03-16 18:31:59,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:59,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:59,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:59,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:31:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:31:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33935368] [2025-03-16 18:31:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33935368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:31:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603459043] [2025-03-16 18:31:59,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:31:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:31:59,395 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) [2025-03-16 18:31:59,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 18:31:59,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:31:59,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:31:59,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:31:59,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:31:59,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:31:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:31:59,684 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:31:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603459043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:31:59,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:31:59,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:31:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926939835] [2025-03-16 18:31:59,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:31:59,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:31:59,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:31:59,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:31:59,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:31:59,685 INFO L87 Difference]: Start difference. First operand 597 states and 984 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:31:59,754 INFO L93 Difference]: Finished difference Result 1064 states and 1768 transitions. [2025-03-16 18:31:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:31:59,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2025-03-16 18:31:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:59,758 INFO L225 Difference]: With dead ends: 1064 [2025-03-16 18:31:59,758 INFO L226 Difference]: Without dead ends: 621 [2025-03-16 18:31:59,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:31:59,761 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 86 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:59,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5063 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2025-03-16 18:31:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 616. [2025-03-16 18:31:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 498 states have (on average 1.6726907630522088) internal successors, (833), 521 states have internal predecessors, (833), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:31:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1014 transitions. [2025-03-16 18:31:59,779 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1014 transitions. Word has length 105 [2025-03-16 18:31:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:31:59,779 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 1014 transitions. [2025-03-16 18:31:59,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:31:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1014 transitions. [2025-03-16 18:31:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:31:59,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:31:59,782 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:31:59,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-16 18:31:59,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 18:31:59,983 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:31:59,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:31:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -681264333, now seen corresponding path program 1 times [2025-03-16 18:31:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:31:59,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639100059] [2025-03-16 18:31:59,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:31:59,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:31:59,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:31:59,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:31:59,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:31:59,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:32:00,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639100059] [2025-03-16 18:32:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639100059] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769505731] [2025-03-16 18:32:00,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:00,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:00,052 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) [2025-03-16 18:32:00,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 18:32:00,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:32:00,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:32:00,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:32:00,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:00,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769505731] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:32:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780255333] [2025-03-16 18:32:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:00,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:00,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:00,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:00,359 INFO L87 Difference]: Start difference. First operand 616 states and 1014 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:00,464 INFO L93 Difference]: Finished difference Result 1064 states and 1768 transitions. [2025-03-16 18:32:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:32:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2025-03-16 18:32:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:00,468 INFO L225 Difference]: With dead ends: 1064 [2025-03-16 18:32:00,468 INFO L226 Difference]: Without dead ends: 621 [2025-03-16 18:32:00,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:00,470 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 113 mSDsluCounter, 4981 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5827 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:00,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5827 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2025-03-16 18:32:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 616. [2025-03-16 18:32:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 498 states have (on average 1.6726907630522088) internal successors, (833), 521 states have internal predecessors, (833), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:32:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1014 transitions. [2025-03-16 18:32:00,486 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1014 transitions. Word has length 106 [2025-03-16 18:32:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:00,487 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 1014 transitions. [2025-03-16 18:32:00,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1014 transitions. [2025-03-16 18:32:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:32:00,489 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:00,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:00,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-16 18:32:00,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:00,690 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:00,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -142033345, now seen corresponding path program 1 times [2025-03-16 18:32:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110674770] [2025-03-16 18:32:00,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:00,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:32:00,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:32:00,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:32:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110674770] [2025-03-16 18:32:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110674770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79722733] [2025-03-16 18:32:00,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:00,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:00,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:00,747 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:00,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 18:32:00,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:32:00,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:32:00,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:00,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:00,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:00,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:32:00,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79722733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:32:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930003567] [2025-03-16 18:32:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:00,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:00,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:00,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:00,985 INFO L87 Difference]: Start difference. First operand 616 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:01,021 INFO L93 Difference]: Finished difference Result 1131 states and 1878 transitions. [2025-03-16 18:32:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2025-03-16 18:32:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:01,025 INFO L225 Difference]: With dead ends: 1131 [2025-03-16 18:32:01,025 INFO L226 Difference]: Without dead ends: 616 [2025-03-16 18:32:01,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:01,028 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 13 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:01,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2552 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2025-03-16 18:32:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2025-03-16 18:32:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 498 states have (on average 1.6646586345381527) internal successors, (829), 521 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:32:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1010 transitions. [2025-03-16 18:32:01,054 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1010 transitions. Word has length 106 [2025-03-16 18:32:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:01,054 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 1010 transitions. [2025-03-16 18:32:01,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1010 transitions. [2025-03-16 18:32:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-16 18:32:01,056 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:01,056 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:01,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:01,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 18:32:01,257 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:01,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1618471584, now seen corresponding path program 1 times [2025-03-16 18:32:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530833182] [2025-03-16 18:32:01,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:01,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:32:01,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:32:01,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:01,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:32:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530833182] [2025-03-16 18:32:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530833182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715755573] [2025-03-16 18:32:01,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:01,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:01,316 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:01,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 18:32:01,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:32:01,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:32:01,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:01,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:01,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:32:01,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:01,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:01,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715755573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:01,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:32:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109053868] [2025-03-16 18:32:01,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:01,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:01,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:01,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:01,579 INFO L87 Difference]: Start difference. First operand 616 states and 1010 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:01,670 INFO L93 Difference]: Finished difference Result 1091 states and 1812 transitions. [2025-03-16 18:32:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:32:01,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 107 [2025-03-16 18:32:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:01,674 INFO L225 Difference]: With dead ends: 1091 [2025-03-16 18:32:01,675 INFO L226 Difference]: Without dead ends: 648 [2025-03-16 18:32:01,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:01,677 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 121 mSDsluCounter, 4943 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:01,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5783 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-16 18:32:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 616. [2025-03-16 18:32:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 498 states have (on average 1.6646586345381527) internal successors, (829), 521 states have internal predecessors, (829), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:32:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1010 transitions. [2025-03-16 18:32:01,695 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1010 transitions. Word has length 107 [2025-03-16 18:32:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:01,696 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 1010 transitions. [2025-03-16 18:32:01,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1010 transitions. [2025-03-16 18:32:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-16 18:32:01,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:01,698 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:01,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-16 18:32:01,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:32:01,899 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:01,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1555901200, now seen corresponding path program 1 times [2025-03-16 18:32:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788665075] [2025-03-16 18:32:01,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:01,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:32:01,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:32:01,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:01,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:32:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788665075] [2025-03-16 18:32:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788665075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389146198] [2025-03-16 18:32:01,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:01,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:01,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:01,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:01,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 18:32:02,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:32:02,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:32:02,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:02,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:32:02,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:32:02,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:02,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389146198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:02,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:02,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:32:02,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403480783] [2025-03-16 18:32:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:02,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:02,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:02,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:02,204 INFO L87 Difference]: Start difference. First operand 616 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:02,241 INFO L93 Difference]: Finished difference Result 1175 states and 1946 transitions. [2025-03-16 18:32:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:32:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2025-03-16 18:32:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:02,245 INFO L225 Difference]: With dead ends: 1175 [2025-03-16 18:32:02,245 INFO L226 Difference]: Without dead ends: 640 [2025-03-16 18:32:02,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:02,247 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 6 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:02,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2525 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-03-16 18:32:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2025-03-16 18:32:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 522 states have (on average 1.6417624521072798) internal successors, (857), 545 states have internal predecessors, (857), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:32:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1038 transitions. [2025-03-16 18:32:02,262 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1038 transitions. Word has length 108 [2025-03-16 18:32:02,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:02,263 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1038 transitions. [2025-03-16 18:32:02,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1038 transitions. [2025-03-16 18:32:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-16 18:32:02,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:02,265 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:02,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:02,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 18:32:02,466 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 448510659, now seen corresponding path program 1 times [2025-03-16 18:32:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172448395] [2025-03-16 18:32:02,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:02,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:32:02,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:32:02,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:02,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:32:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172448395] [2025-03-16 18:32:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172448395] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931277275] [2025-03-16 18:32:02,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:02,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:02,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 18:32:02,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:32:02,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:32:02,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:02,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:02,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:32:02,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:32:02,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:02,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931277275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:02,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:02,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:32:02,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126125369] [2025-03-16 18:32:02,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:02,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:02,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:02,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:02,798 INFO L87 Difference]: Start difference. First operand 640 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:02,815 INFO L93 Difference]: Finished difference Result 1080 states and 1785 transitions. [2025-03-16 18:32:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:32:02,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2025-03-16 18:32:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:02,822 INFO L225 Difference]: With dead ends: 1080 [2025-03-16 18:32:02,822 INFO L226 Difference]: Without dead ends: 642 [2025-03-16 18:32:02,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:02,825 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 0 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:02,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2574 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-16 18:32:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2025-03-16 18:32:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 524 states have (on average 1.6393129770992367) internal successors, (859), 547 states have internal predecessors, (859), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2025-03-16 18:32:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1040 transitions. [2025-03-16 18:32:02,840 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1040 transitions. Word has length 108 [2025-03-16 18:32:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:02,840 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1040 transitions. [2025-03-16 18:32:02,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1040 transitions. [2025-03-16 18:32:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-16 18:32:02,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:02,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:02,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:03,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 18:32:03,044 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:03,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 717460240, now seen corresponding path program 1 times [2025-03-16 18:32:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098180346] [2025-03-16 18:32:03,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:03,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:32:03,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:32:03,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:03,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:32:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098180346] [2025-03-16 18:32:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098180346] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104190801] [2025-03-16 18:32:03,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:03,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:03,107 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:03,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 18:32:03,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:32:03,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:32:03,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:03,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:03,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 18:32:03,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:32:03,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104190801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2025-03-16 18:32:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494667759] [2025-03-16 18:32:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:03,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:32:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:03,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:32:03,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:03,483 INFO L87 Difference]: Start difference. First operand 642 states and 1040 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-16 18:32:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:05,996 INFO L93 Difference]: Finished difference Result 1760 states and 2943 transitions. [2025-03-16 18:32:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:32:05,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 111 [2025-03-16 18:32:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:06,004 INFO L225 Difference]: With dead ends: 1760 [2025-03-16 18:32:06,004 INFO L226 Difference]: Without dead ends: 1320 [2025-03-16 18:32:06,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:32:06,006 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 3476 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 5143 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 5925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 5143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:06,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3598 Valid, 3940 Invalid, 5925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 5143 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 18:32:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2025-03-16 18:32:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1301. [2025-03-16 18:32:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1031 states have (on average 1.641125121241513) internal successors, (1692), 1078 states have internal predecessors, (1692), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2025-03-16 18:32:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 2153 transitions. [2025-03-16 18:32:06,047 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 2153 transitions. Word has length 111 [2025-03-16 18:32:06,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:06,047 INFO L471 AbstractCegarLoop]: Abstraction has 1301 states and 2153 transitions. [2025-03-16 18:32:06,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-16 18:32:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 2153 transitions. [2025-03-16 18:32:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:32:06,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:06,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:06,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-16 18:32:06,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:06,252 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:06,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1943149447, now seen corresponding path program 1 times [2025-03-16 18:32:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800339601] [2025-03-16 18:32:06,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:06,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:32:06,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:32:06,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:06,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:32:06,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800339601] [2025-03-16 18:32:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800339601] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384972876] [2025-03-16 18:32:06,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:06,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:06,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:06,313 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:06,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 18:32:06,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:32:06,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:32:06,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:06,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:06,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:32:06,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:32:06,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384972876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:06,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:06,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-16 18:32:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604112660] [2025-03-16 18:32:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:06,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:06,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:06,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:06,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:06,557 INFO L87 Difference]: Start difference. First operand 1301 states and 2153 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:06,887 INFO L93 Difference]: Finished difference Result 3228 states and 5481 transitions. [2025-03-16 18:32:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 18:32:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2025-03-16 18:32:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:06,902 INFO L225 Difference]: With dead ends: 3228 [2025-03-16 18:32:06,903 INFO L226 Difference]: Without dead ends: 2241 [2025-03-16 18:32:06,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:06,907 INFO L435 NwaCegarLoop]: 1334 mSDtfsCounter, 707 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:06,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 4676 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:32:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2025-03-16 18:32:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2222. [2025-03-16 18:32:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1734 states have (on average 1.6499423298731257) internal successors, (2861), 1815 states have internal predecessors, (2861), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2025-03-16 18:32:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3718 transitions. [2025-03-16 18:32:06,968 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3718 transitions. Word has length 112 [2025-03-16 18:32:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:06,968 INFO L471 AbstractCegarLoop]: Abstraction has 2222 states and 3718 transitions. [2025-03-16 18:32:06,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3718 transitions. [2025-03-16 18:32:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:32:06,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:06,974 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:06,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-16 18:32:07,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:07,175 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:07,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash 608927781, now seen corresponding path program 1 times [2025-03-16 18:32:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:07,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048619970] [2025-03-16 18:32:07,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:07,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:32:07,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:32:07,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:07,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048619970] [2025-03-16 18:32:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048619970] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319140715] [2025-03-16 18:32:07,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:07,281 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:07,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 18:32:07,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:32:07,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:32:07,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:07,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:07,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:32:07,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:32:07,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319140715] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:32:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872585828] [2025-03-16 18:32:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:07,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:07,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:07,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:07,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:32:07,550 INFO L87 Difference]: Start difference. First operand 2222 states and 3718 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:07,605 INFO L93 Difference]: Finished difference Result 4287 states and 7222 transitions. [2025-03-16 18:32:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:32:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2025-03-16 18:32:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:07,618 INFO L225 Difference]: With dead ends: 4287 [2025-03-16 18:32:07,619 INFO L226 Difference]: Without dead ends: 2258 [2025-03-16 18:32:07,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:32:07,626 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 5 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:07,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2524 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2025-03-16 18:32:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2240. [2025-03-16 18:32:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1752 states have (on average 1.6501141552511416) internal successors, (2891), 1833 states have internal predecessors, (2891), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2025-03-16 18:32:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3748 transitions. [2025-03-16 18:32:07,681 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3748 transitions. Word has length 114 [2025-03-16 18:32:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:07,681 INFO L471 AbstractCegarLoop]: Abstraction has 2240 states and 3748 transitions. [2025-03-16 18:32:07,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:32:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3748 transitions. [2025-03-16 18:32:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:32:07,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:07,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:07,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-16 18:32:07,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:07,887 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:07,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1220654767, now seen corresponding path program 1 times [2025-03-16 18:32:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:07,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547847368] [2025-03-16 18:32:07,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:07,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:32:07,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:32:07,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:07,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:07,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547847368] [2025-03-16 18:32:07,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547847368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595243217] [2025-03-16 18:32:07,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:07,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:07,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:07,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 18:32:08,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:32:08,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:32:08,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:08,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 18:32:08,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:08,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595243217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:08,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:08,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:32:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358000017] [2025-03-16 18:32:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:08,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:08,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:08,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:32:08,276 INFO L87 Difference]: Start difference. First operand 2240 states and 3748 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:08,386 INFO L93 Difference]: Finished difference Result 4229 states and 7117 transitions. [2025-03-16 18:32:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:32:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 115 [2025-03-16 18:32:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:08,398 INFO L225 Difference]: With dead ends: 4229 [2025-03-16 18:32:08,398 INFO L226 Difference]: Without dead ends: 2310 [2025-03-16 18:32:08,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:32:08,407 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 89 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:08,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5804 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2025-03-16 18:32:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2243. [2025-03-16 18:32:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1754 states have (on average 1.6488027366020523) internal successors, (2892), 1836 states have internal predecessors, (2892), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2025-03-16 18:32:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3750 transitions. [2025-03-16 18:32:08,469 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3750 transitions. Word has length 115 [2025-03-16 18:32:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:08,470 INFO L471 AbstractCegarLoop]: Abstraction has 2243 states and 3750 transitions. [2025-03-16 18:32:08,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:32:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3750 transitions. [2025-03-16 18:32:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:32:08,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:08,475 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:08,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:08,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:08,676 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:08,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash -815329522, now seen corresponding path program 1 times [2025-03-16 18:32:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175721008] [2025-03-16 18:32:08,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:08,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:32:08,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:32:08,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:08,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:08,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175721008] [2025-03-16 18:32:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175721008] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:08,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829116267] [2025-03-16 18:32:08,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:08,787 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:08,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-16 18:32:08,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:32:09,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:32:09,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:09,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:09,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:32:09,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:32:09,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829116267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2025-03-16 18:32:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796981063] [2025-03-16 18:32:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:09,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:09,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:09,121 INFO L87 Difference]: Start difference. First operand 2243 states and 3750 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:32:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:09,423 INFO L93 Difference]: Finished difference Result 2444 states and 4092 transitions. [2025-03-16 18:32:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 115 [2025-03-16 18:32:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:09,438 INFO L225 Difference]: With dead ends: 2444 [2025-03-16 18:32:09,439 INFO L226 Difference]: Without dead ends: 2427 [2025-03-16 18:32:09,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:09,441 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 847 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:09,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2216 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:32:09,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2025-03-16 18:32:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2255. [2025-03-16 18:32:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1766 states have (on average 1.6443941109852775) internal successors, (2904), 1848 states have internal predecessors, (2904), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2025-03-16 18:32:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3762 transitions. [2025-03-16 18:32:09,533 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3762 transitions. Word has length 115 [2025-03-16 18:32:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3762 transitions. [2025-03-16 18:32:09,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:32:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3762 transitions. [2025-03-16 18:32:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-16 18:32:09,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:09,542 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:09,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:09,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:09,742 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:09,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash -353125332, now seen corresponding path program 1 times [2025-03-16 18:32:09,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438822515] [2025-03-16 18:32:09,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:09,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:32:09,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:32:09,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:09,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:32:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:09,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438822515] [2025-03-16 18:32:09,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438822515] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:09,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896810545] [2025-03-16 18:32:09,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:09,866 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:09,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-16 18:32:09,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:32:10,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:32:10,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:10,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:10,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:32:10,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:32:10,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896810545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2025-03-16 18:32:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985931236] [2025-03-16 18:32:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:10,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:10,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:10,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:10,122 INFO L87 Difference]: Start difference. First operand 2255 states and 3762 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 18:32:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:10,155 INFO L93 Difference]: Finished difference Result 2272 states and 3782 transitions. [2025-03-16 18:32:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2025-03-16 18:32:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:10,173 INFO L225 Difference]: With dead ends: 2272 [2025-03-16 18:32:10,173 INFO L226 Difference]: Without dead ends: 2255 [2025-03-16 18:32:10,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:32:10,177 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:10,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3432 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2025-03-16 18:32:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2025-03-16 18:32:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1766 states have (on average 1.6409966024915061) internal successors, (2898), 1848 states have internal predecessors, (2898), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2025-03-16 18:32:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3756 transitions. [2025-03-16 18:32:10,250 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3756 transitions. Word has length 121 [2025-03-16 18:32:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:10,251 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3756 transitions. [2025-03-16 18:32:10,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 18:32:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3756 transitions. [2025-03-16 18:32:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:32:10,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:10,257 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:10,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:10,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:10,458 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:10,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash -232977051, now seen corresponding path program 1 times [2025-03-16 18:32:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707245338] [2025-03-16 18:32:10,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:10,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:32:10,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:32:10,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:10,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:32:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707245338] [2025-03-16 18:32:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707245338] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538675287] [2025-03-16 18:32:10,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:10,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:10,594 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:10,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-16 18:32:10,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:32:10,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:32:10,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:10,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:10,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-16 18:32:10,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:32:10,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:10,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538675287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:10,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-16 18:32:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374607367] [2025-03-16 18:32:10,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:10,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:10,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:10,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:10,879 INFO L87 Difference]: Start difference. First operand 2255 states and 3756 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:32:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:10,967 INFO L93 Difference]: Finished difference Result 4370 states and 7310 transitions. [2025-03-16 18:32:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:32:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2025-03-16 18:32:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:10,978 INFO L225 Difference]: With dead ends: 4370 [2025-03-16 18:32:10,978 INFO L226 Difference]: Without dead ends: 2335 [2025-03-16 18:32:10,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:10,987 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 119 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 4998 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:10,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 4998 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2025-03-16 18:32:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2255. [2025-03-16 18:32:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1766 states have (on average 1.6409966024915061) internal successors, (2898), 1848 states have internal predecessors, (2898), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2025-03-16 18:32:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3756 transitions. [2025-03-16 18:32:11,065 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3756 transitions. Word has length 131 [2025-03-16 18:32:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:11,065 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3756 transitions. [2025-03-16 18:32:11,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:32:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3756 transitions. [2025-03-16 18:32:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:32:11,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:11,072 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:11,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:11,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 18:32:11,273 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:11,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash -724651725, now seen corresponding path program 1 times [2025-03-16 18:32:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:11,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503928498] [2025-03-16 18:32:11,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:11,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:32:11,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:32:11,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:32:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503928498] [2025-03-16 18:32:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503928498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459020841] [2025-03-16 18:32:11,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:11,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:11,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:11,335 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-16 18:32:11,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:32:11,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:32:11,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:11,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:32:11,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:32:11,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459020841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:11,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 18:32:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630361877] [2025-03-16 18:32:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:11,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:11,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:11,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:32:11,611 INFO L87 Difference]: Start difference. First operand 2255 states and 3756 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:11,671 INFO L93 Difference]: Finished difference Result 4377 states and 7319 transitions. [2025-03-16 18:32:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:11,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2025-03-16 18:32:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:11,687 INFO L225 Difference]: With dead ends: 4377 [2025-03-16 18:32:11,687 INFO L226 Difference]: Without dead ends: 2085 [2025-03-16 18:32:11,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:11,694 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 7 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:11,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2552 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2025-03-16 18:32:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2085. [2025-03-16 18:32:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1611 states have (on average 1.649286157666046) internal successors, (2657), 1687 states have internal predecessors, (2657), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2025-03-16 18:32:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3496 transitions. [2025-03-16 18:32:11,767 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3496 transitions. Word has length 131 [2025-03-16 18:32:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:11,767 INFO L471 AbstractCegarLoop]: Abstraction has 2085 states and 3496 transitions. [2025-03-16 18:32:11,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3496 transitions. [2025-03-16 18:32:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-16 18:32:11,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:11,773 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:11,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:11,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 18:32:11,973 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:11,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2075893095, now seen corresponding path program 1 times [2025-03-16 18:32:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831771219] [2025-03-16 18:32:11,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:11,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:32:11,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:32:11,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:11,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 18:32:12,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:12,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831771219] [2025-03-16 18:32:12,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831771219] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:12,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164198330] [2025-03-16 18:32:12,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:12,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:12,052 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:12,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-16 18:32:12,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:32:12,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:32:12,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:12,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:12,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:32:12,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164198330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:12,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:32:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687373424] [2025-03-16 18:32:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:12,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:12,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:12,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:12,312 INFO L87 Difference]: Start difference. First operand 2085 states and 3496 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:12,412 INFO L93 Difference]: Finished difference Result 4177 states and 7010 transitions. [2025-03-16 18:32:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:12,412 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), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2025-03-16 18:32:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:12,422 INFO L225 Difference]: With dead ends: 4177 [2025-03-16 18:32:12,422 INFO L226 Difference]: Without dead ends: 2118 [2025-03-16 18:32:12,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:32:12,428 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 128 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:12,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2431 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:32:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2025-03-16 18:32:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2085. [2025-03-16 18:32:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1611 states have (on average 1.648665425201738) internal successors, (2656), 1687 states have internal predecessors, (2656), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2025-03-16 18:32:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3495 transitions. [2025-03-16 18:32:12,494 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3495 transitions. Word has length 133 [2025-03-16 18:32:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:12,494 INFO L471 AbstractCegarLoop]: Abstraction has 2085 states and 3495 transitions. [2025-03-16 18:32:12,495 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), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3495 transitions. [2025-03-16 18:32:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-16 18:32:12,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:12,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:12,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:12,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 18:32:12,701 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:12,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1309868402, now seen corresponding path program 1 times [2025-03-16 18:32:12,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:12,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184450581] [2025-03-16 18:32:12,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:12,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-16 18:32:12,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-16 18:32:12,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:32:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184450581] [2025-03-16 18:32:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184450581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:32:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559767099] [2025-03-16 18:32:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:12,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:12,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:12,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:12,830 INFO L87 Difference]: Start difference. First operand 2085 states and 3495 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:32:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:12,913 INFO L93 Difference]: Finished difference Result 2968 states and 4970 transitions. [2025-03-16 18:32:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:32:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 134 [2025-03-16 18:32:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:12,923 INFO L225 Difference]: With dead ends: 2968 [2025-03-16 18:32:12,923 INFO L226 Difference]: Without dead ends: 2120 [2025-03-16 18:32:12,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:12,927 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 115 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:12,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 4992 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2025-03-16 18:32:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2085. [2025-03-16 18:32:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1611 states have (on average 1.648665425201738) internal successors, (2656), 1687 states have internal predecessors, (2656), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2025-03-16 18:32:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3495 transitions. [2025-03-16 18:32:12,972 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3495 transitions. Word has length 134 [2025-03-16 18:32:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:12,973 INFO L471 AbstractCegarLoop]: Abstraction has 2085 states and 3495 transitions. [2025-03-16 18:32:12,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:32:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3495 transitions. [2025-03-16 18:32:12,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-16 18:32:12,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:12,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:12,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 18:32:12,977 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1721385633, now seen corresponding path program 1 times [2025-03-16 18:32:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478579966] [2025-03-16 18:32:12,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:12,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-16 18:32:12,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-16 18:32:12,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:12,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:32:13,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478579966] [2025-03-16 18:32:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478579966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:32:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582153373] [2025-03-16 18:32:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:13,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:13,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:13,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:32:13,033 INFO L87 Difference]: Start difference. First operand 2085 states and 3495 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:13,088 INFO L93 Difference]: Finished difference Result 3017 states and 5052 transitions. [2025-03-16 18:32:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2025-03-16 18:32:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:13,093 INFO L225 Difference]: With dead ends: 3017 [2025-03-16 18:32:13,093 INFO L226 Difference]: Without dead ends: 942 [2025-03-16 18:32:13,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:13,097 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 8 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:13,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2549 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2025-03-16 18:32:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2025-03-16 18:32:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 744 states have (on average 1.64247311827957) internal successors, (1222), 777 states have internal predecessors, (1222), 158 states have call successors, (158), 40 states have call predecessors, (158), 39 states have return successors, (162), 150 states have call predecessors, (162), 153 states have call successors, (162) [2025-03-16 18:32:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1542 transitions. [2025-03-16 18:32:13,121 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1542 transitions. Word has length 134 [2025-03-16 18:32:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:13,121 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1542 transitions. [2025-03-16 18:32:13,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:32:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1542 transitions. [2025-03-16 18:32:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:32:13,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:13,123 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:13,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-16 18:32:13,124 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:13,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2123765393, now seen corresponding path program 1 times [2025-03-16 18:32:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468612277] [2025-03-16 18:32:13,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:13,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:32:13,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:32:13,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:13,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:32:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:13,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468612277] [2025-03-16 18:32:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468612277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:13,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:13,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:32:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750329593] [2025-03-16 18:32:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:13,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:13,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:13,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:13,231 INFO L87 Difference]: Start difference. First operand 942 states and 1542 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:32:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:14,832 INFO L93 Difference]: Finished difference Result 3093 states and 5199 transitions. [2025-03-16 18:32:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 18:32:14,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2025-03-16 18:32:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:14,844 INFO L225 Difference]: With dead ends: 3093 [2025-03-16 18:32:14,845 INFO L226 Difference]: Without dead ends: 2250 [2025-03-16 18:32:14,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:32:14,848 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 2303 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 4003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:14,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 1880 Invalid, 4003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 18:32:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2025-03-16 18:32:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2107. [2025-03-16 18:32:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1665 states have (on average 1.664864864864865) internal successors, (2772), 1737 states have internal predecessors, (2772), 350 states have call successors, (350), 82 states have call predecessors, (350), 91 states have return successors, (392), 337 states have call predecessors, (392), 345 states have call successors, (392) [2025-03-16 18:32:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3514 transitions. [2025-03-16 18:32:14,899 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3514 transitions. Word has length 135 [2025-03-16 18:32:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:14,899 INFO L471 AbstractCegarLoop]: Abstraction has 2107 states and 3514 transitions. [2025-03-16 18:32:14,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:32:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3514 transitions. [2025-03-16 18:32:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-16 18:32:14,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:14,901 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:14,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 18:32:14,902 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:14,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2094152938, now seen corresponding path program 1 times [2025-03-16 18:32:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204785522] [2025-03-16 18:32:14,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:14,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-16 18:32:14,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-16 18:32:14,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:14,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:32:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204785522] [2025-03-16 18:32:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204785522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:14,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:14,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:32:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162751834] [2025-03-16 18:32:14,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:14,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:14,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:14,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:14,981 INFO L87 Difference]: Start difference. First operand 2107 states and 3514 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:32:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:15,045 INFO L93 Difference]: Finished difference Result 4140 states and 6960 transitions. [2025-03-16 18:32:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:15,046 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2025-03-16 18:32:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:15,055 INFO L225 Difference]: With dead ends: 4140 [2025-03-16 18:32:15,055 INFO L226 Difference]: Without dead ends: 2132 [2025-03-16 18:32:15,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:15,060 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 0 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:15,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3242 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2025-03-16 18:32:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2126. [2025-03-16 18:32:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1680 states have (on average 1.6583333333333334) internal successors, (2786), 1751 states have internal predecessors, (2786), 349 states have call successors, (349), 82 states have call predecessors, (349), 96 states have return successors, (406), 342 states have call predecessors, (406), 344 states have call successors, (406) [2025-03-16 18:32:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3541 transitions. [2025-03-16 18:32:15,128 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3541 transitions. Word has length 140 [2025-03-16 18:32:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:15,128 INFO L471 AbstractCegarLoop]: Abstraction has 2126 states and 3541 transitions. [2025-03-16 18:32:15,128 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:32:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3541 transitions. [2025-03-16 18:32:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 18:32:15,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:15,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:15,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 18:32:15,130 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:15,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -444127996, now seen corresponding path program 1 times [2025-03-16 18:32:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415286700] [2025-03-16 18:32:15,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:15,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 18:32:15,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 18:32:15,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:15,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:32:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415286700] [2025-03-16 18:32:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415286700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:15,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:32:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503981224] [2025-03-16 18:32:15,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:15,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:15,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:15,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:15,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:15,293 INFO L87 Difference]: Start difference. First operand 2126 states and 3541 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-16 18:32:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:16,895 INFO L93 Difference]: Finished difference Result 6865 states and 11623 transitions. [2025-03-16 18:32:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:32:16,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 144 [2025-03-16 18:32:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:16,916 INFO L225 Difference]: With dead ends: 6865 [2025-03-16 18:32:16,916 INFO L226 Difference]: Without dead ends: 4833 [2025-03-16 18:32:16,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:32:16,924 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 4728 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 1178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4870 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:16,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4870 Valid, 1406 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1178 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 18:32:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2025-03-16 18:32:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4734. [2025-03-16 18:32:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 3703 states have (on average 1.6567647853092087) internal successors, (6135), 3866 states have internal predecessors, (6135), 816 states have call successors, (816), 182 states have call predecessors, (816), 214 states have return successors, (1005), 807 states have call predecessors, (1005), 811 states have call successors, (1005) [2025-03-16 18:32:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 7956 transitions. [2025-03-16 18:32:17,093 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 7956 transitions. Word has length 144 [2025-03-16 18:32:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:17,094 INFO L471 AbstractCegarLoop]: Abstraction has 4734 states and 7956 transitions. [2025-03-16 18:32:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-16 18:32:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 7956 transitions. [2025-03-16 18:32:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 18:32:17,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:17,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:17,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 18:32:17,096 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:17,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1300857320, now seen corresponding path program 1 times [2025-03-16 18:32:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377825299] [2025-03-16 18:32:17,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:17,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:32:17,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:32:17,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:17,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:32:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377825299] [2025-03-16 18:32:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377825299] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201929129] [2025-03-16 18:32:17,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:17,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:17,274 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:17,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-16 18:32:17,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:32:17,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:32:17,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:17,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:17,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:17,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:32:17,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201929129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:17,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:17,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:32:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135754060] [2025-03-16 18:32:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:17,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:17,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:17,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:17,551 INFO L87 Difference]: Start difference. First operand 4734 states and 7956 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:32:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:17,722 INFO L93 Difference]: Finished difference Result 9211 states and 15736 transitions. [2025-03-16 18:32:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:17,723 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 147 [2025-03-16 18:32:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:17,750 INFO L225 Difference]: With dead ends: 9211 [2025-03-16 18:32:17,751 INFO L226 Difference]: Without dead ends: 4792 [2025-03-16 18:32:17,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:17,764 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 264 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:17,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2371 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2025-03-16 18:32:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4738. [2025-03-16 18:32:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3705 states have (on average 1.641565452091768) internal successors, (6082), 3870 states have internal predecessors, (6082), 816 states have call successors, (816), 182 states have call predecessors, (816), 216 states have return successors, (1009), 807 states have call predecessors, (1009), 811 states have call successors, (1009) [2025-03-16 18:32:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 7907 transitions. [2025-03-16 18:32:17,924 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 7907 transitions. Word has length 147 [2025-03-16 18:32:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:17,924 INFO L471 AbstractCegarLoop]: Abstraction has 4738 states and 7907 transitions. [2025-03-16 18:32:17,924 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:32:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 7907 transitions. [2025-03-16 18:32:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 18:32:17,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:17,926 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2025-03-16 18:32:17,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-16 18:32:18,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:18,127 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:18,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1872493063, now seen corresponding path program 1 times [2025-03-16 18:32:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290613570] [2025-03-16 18:32:18,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:18,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:18,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 18:32:18,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 18:32:18,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:18,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:32:18,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290613570] [2025-03-16 18:32:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290613570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112795984] [2025-03-16 18:32:18,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:18,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:18,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:18,334 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:18,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-16 18:32:18,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 18:32:18,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 18:32:18,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:18,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:18,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:18,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:32:18,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112795984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:18,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:18,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:32:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989254288] [2025-03-16 18:32:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:18,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:18,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:18,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:18,632 INFO L87 Difference]: Start difference. First operand 4738 states and 7907 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:32:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:18,798 INFO L93 Difference]: Finished difference Result 9434 states and 15972 transitions. [2025-03-16 18:32:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2025-03-16 18:32:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:18,816 INFO L225 Difference]: With dead ends: 9434 [2025-03-16 18:32:18,816 INFO L226 Difference]: Without dead ends: 4788 [2025-03-16 18:32:18,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:18,827 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 14 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:18,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2354 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2025-03-16 18:32:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4788. [2025-03-16 18:32:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 3745 states have (on average 1.6317757009345795) internal successors, (6111), 3915 states have internal predecessors, (6111), 816 states have call successors, (816), 187 states have call predecessors, (816), 226 states have return successors, (1019), 807 states have call predecessors, (1019), 811 states have call successors, (1019) [2025-03-16 18:32:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 7946 transitions. [2025-03-16 18:32:19,004 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 7946 transitions. Word has length 151 [2025-03-16 18:32:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:19,004 INFO L471 AbstractCegarLoop]: Abstraction has 4788 states and 7946 transitions. [2025-03-16 18:32:19,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:32:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 7946 transitions. [2025-03-16 18:32:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 18:32:19,006 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:19,007 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:19,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-16 18:32:19,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:19,207 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:19,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1324503648, now seen corresponding path program 1 times [2025-03-16 18:32:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149513953] [2025-03-16 18:32:19,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:19,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:32:19,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:32:19,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:19,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:32:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149513953] [2025-03-16 18:32:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149513953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:19,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:19,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:32:19,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304061519] [2025-03-16 18:32:19,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:19,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:19,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:19,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:19,331 INFO L87 Difference]: Start difference. First operand 4788 states and 7946 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2025-03-16 18:32:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:20,882 INFO L93 Difference]: Finished difference Result 9227 states and 15402 transitions. [2025-03-16 18:32:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:32:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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 152 [2025-03-16 18:32:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:20,903 INFO L225 Difference]: With dead ends: 9227 [2025-03-16 18:32:20,903 INFO L226 Difference]: Without dead ends: 5308 [2025-03-16 18:32:20,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-16 18:32:20,913 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 1989 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 3051 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 3051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:20,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1643 Invalid, 3497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 3051 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:32:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2025-03-16 18:32:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 4937. [2025-03-16 18:32:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 3855 states have (on average 1.6220492866407263) internal successors, (6253), 4035 states have internal predecessors, (6253), 830 states have call successors, (830), 202 states have call predecessors, (830), 251 states have return successors, (1070), 821 states have call predecessors, (1070), 825 states have call successors, (1070) [2025-03-16 18:32:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 8153 transitions. [2025-03-16 18:32:21,069 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 8153 transitions. Word has length 152 [2025-03-16 18:32:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:21,069 INFO L471 AbstractCegarLoop]: Abstraction has 4937 states and 8153 transitions. [2025-03-16 18:32:21,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2025-03-16 18:32:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 8153 transitions. [2025-03-16 18:32:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-16 18:32:21,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:21,071 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:21,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-16 18:32:21,071 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:21,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash -810900317, now seen corresponding path program 1 times [2025-03-16 18:32:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102442962] [2025-03-16 18:32:21,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:21,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-16 18:32:21,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-16 18:32:21,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:21,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:32:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102442962] [2025-03-16 18:32:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102442962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:32:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107601535] [2025-03-16 18:32:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:21,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:32:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:21,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:32:21,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:32:21,400 INFO L87 Difference]: Start difference. First operand 4937 states and 8153 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:32:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:22,439 INFO L93 Difference]: Finished difference Result 9796 states and 16277 transitions. [2025-03-16 18:32:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:32:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 157 [2025-03-16 18:32:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:22,463 INFO L225 Difference]: With dead ends: 9796 [2025-03-16 18:32:22,463 INFO L226 Difference]: Without dead ends: 4963 [2025-03-16 18:32:22,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:32:22,497 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 1206 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:22,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1678 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 18:32:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4963 states. [2025-03-16 18:32:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4963 to 4947. [2025-03-16 18:32:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 3860 states have (on average 1.6134715025906736) internal successors, (6228), 4045 states have internal predecessors, (6228), 830 states have call successors, (830), 202 states have call predecessors, (830), 256 states have return successors, (1110), 821 states have call predecessors, (1110), 825 states have call successors, (1110) [2025-03-16 18:32:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 8168 transitions. [2025-03-16 18:32:22,690 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 8168 transitions. Word has length 157 [2025-03-16 18:32:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:22,691 INFO L471 AbstractCegarLoop]: Abstraction has 4947 states and 8168 transitions. [2025-03-16 18:32:22,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:32:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 8168 transitions. [2025-03-16 18:32:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-16 18:32:22,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:22,693 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:22,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-16 18:32:22,694 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:22,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1052167044, now seen corresponding path program 1 times [2025-03-16 18:32:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057036431] [2025-03-16 18:32:22,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:22,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-16 18:32:22,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-16 18:32:22,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:22,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:32:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057036431] [2025-03-16 18:32:22,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057036431] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453316162] [2025-03-16 18:32:22,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:22,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:22,951 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:22,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-16 18:32:23,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-16 18:32:23,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-16 18:32:23,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:23,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:23,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:32:23,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:32:23,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453316162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2025-03-16 18:32:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401023565] [2025-03-16 18:32:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:23,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:32:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:23,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:32:23,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:32:23,401 INFO L87 Difference]: Start difference. First operand 4947 states and 8168 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2025-03-16 18:32:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:24,919 INFO L93 Difference]: Finished difference Result 9643 states and 16041 transitions. [2025-03-16 18:32:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:32:24,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 160 [2025-03-16 18:32:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:24,941 INFO L225 Difference]: With dead ends: 9643 [2025-03-16 18:32:24,942 INFO L226 Difference]: Without dead ends: 5432 [2025-03-16 18:32:24,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-03-16 18:32:24,951 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1828 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:24,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 1832 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:32:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2025-03-16 18:32:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5025. [2025-03-16 18:32:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 3908 states have (on average 1.6095189355168884) internal successors, (6290), 4103 states have internal predecessors, (6290), 854 states have call successors, (854), 202 states have call predecessors, (854), 262 states have return successors, (1205), 841 states have call predecessors, (1205), 849 states have call successors, (1205) [2025-03-16 18:32:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 8349 transitions. [2025-03-16 18:32:25,186 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 8349 transitions. Word has length 160 [2025-03-16 18:32:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:25,187 INFO L471 AbstractCegarLoop]: Abstraction has 5025 states and 8349 transitions. [2025-03-16 18:32:25,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2025-03-16 18:32:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 8349 transitions. [2025-03-16 18:32:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-16 18:32:25,189 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:25,189 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:25,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-16 18:32:25,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-16 18:32:25,390 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:25,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1826384373, now seen corresponding path program 1 times [2025-03-16 18:32:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782760571] [2025-03-16 18:32:25,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:25,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 18:32:25,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 18:32:25,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:25,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 18:32:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782760571] [2025-03-16 18:32:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782760571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:32:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473199814] [2025-03-16 18:32:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:25,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:25,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:25,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:25,493 INFO L87 Difference]: Start difference. First operand 5025 states and 8349 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:32:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:27,248 INFO L93 Difference]: Finished difference Result 17806 states and 30313 transitions. [2025-03-16 18:32:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:32:27,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2025-03-16 18:32:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:27,287 INFO L225 Difference]: With dead ends: 17806 [2025-03-16 18:32:27,287 INFO L226 Difference]: Without dead ends: 12891 [2025-03-16 18:32:27,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:27,300 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 2135 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:27,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 1282 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:32:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12891 states. [2025-03-16 18:32:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12891 to 12492. [2025-03-16 18:32:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12492 states, 9340 states have (on average 1.5975374732334047) internal successors, (14921), 9933 states have internal predecessors, (14921), 2544 states have call successors, (2544), 432 states have call predecessors, (2544), 607 states have return successors, (3770), 2530 states have call predecessors, (3770), 2539 states have call successors, (3770) [2025-03-16 18:32:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12492 states to 12492 states and 21235 transitions. [2025-03-16 18:32:28,019 INFO L78 Accepts]: Start accepts. Automaton has 12492 states and 21235 transitions. Word has length 158 [2025-03-16 18:32:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:28,020 INFO L471 AbstractCegarLoop]: Abstraction has 12492 states and 21235 transitions. [2025-03-16 18:32:28,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:32:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12492 states and 21235 transitions. [2025-03-16 18:32:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-16 18:32:28,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:28,024 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:28,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-16 18:32:28,024 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:28,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:28,025 INFO L85 PathProgramCache]: Analyzing trace with hash 152868671, now seen corresponding path program 1 times [2025-03-16 18:32:28,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:28,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259314633] [2025-03-16 18:32:28,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:28,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-16 18:32:28,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-16 18:32:28,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:28,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 18:32:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259314633] [2025-03-16 18:32:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259314633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:28,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:32:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:32:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957949849] [2025-03-16 18:32:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:28,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:28,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:28,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:32:28,178 INFO L87 Difference]: Start difference. First operand 12492 states and 21235 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:32:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:30,209 INFO L93 Difference]: Finished difference Result 37763 states and 64980 transitions. [2025-03-16 18:32:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 168 [2025-03-16 18:32:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:30,346 INFO L225 Difference]: With dead ends: 37763 [2025-03-16 18:32:30,346 INFO L226 Difference]: Without dead ends: 25370 [2025-03-16 18:32:30,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:32:30,402 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 1789 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:30,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 595 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 18:32:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25370 states. [2025-03-16 18:32:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25370 to 25368. [2025-03-16 18:32:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25368 states, 18981 states have (on average 1.5859016911648491) internal successors, (30102), 20227 states have internal predecessors, (30102), 5102 states have call successors, (5102), 860 states have call predecessors, (5102), 1284 states have return successors, (8181), 5088 states have call predecessors, (8181), 5097 states have call successors, (8181) [2025-03-16 18:32:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25368 states to 25368 states and 43385 transitions. [2025-03-16 18:32:31,861 INFO L78 Accepts]: Start accepts. Automaton has 25368 states and 43385 transitions. Word has length 168 [2025-03-16 18:32:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:31,862 INFO L471 AbstractCegarLoop]: Abstraction has 25368 states and 43385 transitions. [2025-03-16 18:32:31,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:32:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 25368 states and 43385 transitions. [2025-03-16 18:32:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-16 18:32:31,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:31,870 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:31,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-16 18:32:31,870 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:31,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash 359351943, now seen corresponding path program 1 times [2025-03-16 18:32:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:31,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4905503] [2025-03-16 18:32:31,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:31,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 18:32:31,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 18:32:31,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:31,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 18:32:32,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4905503] [2025-03-16 18:32:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4905503] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143256940] [2025-03-16 18:32:32,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:32,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:32,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:32,148 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:32,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-16 18:32:32,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-16 18:32:32,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-16 18:32:32,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:32,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:32,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 18:32:32,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 18:32:32,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143256940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2025-03-16 18:32:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731722719] [2025-03-16 18:32:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:32,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:32:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:32,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:32:32,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:32,444 INFO L87 Difference]: Start difference. First operand 25368 states and 43385 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-16 18:32:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:33,486 INFO L93 Difference]: Finished difference Result 25479 states and 43530 transitions. [2025-03-16 18:32:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:33,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 167 [2025-03-16 18:32:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:33,579 INFO L225 Difference]: With dead ends: 25479 [2025-03-16 18:32:33,579 INFO L226 Difference]: Without dead ends: 25458 [2025-03-16 18:32:33,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:32:33,591 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 0 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:33,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3210 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25458 states. [2025-03-16 18:32:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25458 to 25458. [2025-03-16 18:32:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25458 states, 19071 states have (on average 1.5815636306433853) internal successors, (30162), 20317 states have internal predecessors, (30162), 5102 states have call successors, (5102), 860 states have call predecessors, (5102), 1284 states have return successors, (8181), 5088 states have call predecessors, (8181), 5097 states have call successors, (8181) [2025-03-16 18:32:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25458 states to 25458 states and 43445 transitions. [2025-03-16 18:32:34,722 INFO L78 Accepts]: Start accepts. Automaton has 25458 states and 43445 transitions. Word has length 167 [2025-03-16 18:32:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:34,722 INFO L471 AbstractCegarLoop]: Abstraction has 25458 states and 43445 transitions. [2025-03-16 18:32:34,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-16 18:32:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 25458 states and 43445 transitions. [2025-03-16 18:32:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-16 18:32:34,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:34,734 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:34,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-16 18:32:34,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-16 18:32:34,934 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:34,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1156912331, now seen corresponding path program 1 times [2025-03-16 18:32:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750194252] [2025-03-16 18:32:34,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:34,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:32:34,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:32:34,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:34,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-03-16 18:32:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750194252] [2025-03-16 18:32:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750194252] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989278560] [2025-03-16 18:32:35,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:35,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:35,018 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:35,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-16 18:32:35,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:32:35,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:32:35,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:35,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:35,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:32:35,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-16 18:32:35,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989278560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:35,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:35,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:32:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743501243] [2025-03-16 18:32:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:35,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:35,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:35,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:35,300 INFO L87 Difference]: Start difference. First operand 25458 states and 43445 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:32:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:36,388 INFO L93 Difference]: Finished difference Result 37646 states and 64099 transitions. [2025-03-16 18:32:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:32:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 200 [2025-03-16 18:32:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:36,457 INFO L225 Difference]: With dead ends: 37646 [2025-03-16 18:32:36,457 INFO L226 Difference]: Without dead ends: 12284 [2025-03-16 18:32:36,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:36,555 INFO L435 NwaCegarLoop]: 790 mSDtfsCounter, 15 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:36,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2347 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12284 states. [2025-03-16 18:32:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12284 to 12284. [2025-03-16 18:32:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12284 states, 9211 states have (on average 1.5876669199869722) internal successors, (14624), 9803 states have internal predecessors, (14624), 2465 states have call successors, (2465), 432 states have call predecessors, (2465), 607 states have return successors, (3692), 2452 states have call predecessors, (3692), 2461 states have call successors, (3692) [2025-03-16 18:32:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 20781 transitions. [2025-03-16 18:32:37,463 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 20781 transitions. Word has length 200 [2025-03-16 18:32:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:37,463 INFO L471 AbstractCegarLoop]: Abstraction has 12284 states and 20781 transitions. [2025-03-16 18:32:37,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:32:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 20781 transitions. [2025-03-16 18:32:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2025-03-16 18:32:37,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:37,470 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:37,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-16 18:32:37,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:37,670 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:37,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 487964502, now seen corresponding path program 1 times [2025-03-16 18:32:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550037796] [2025-03-16 18:32:37,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:37,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-03-16 18:32:37,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-03-16 18:32:37,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:37,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-03-16 18:32:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550037796] [2025-03-16 18:32:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550037796] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732599004] [2025-03-16 18:32:38,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:38,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:38,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:38,023 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:38,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-16 18:32:38,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-03-16 18:32:38,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-03-16 18:32:38,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:38,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:38,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 18:32:38,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-16 18:32:38,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 18:32:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-16 18:32:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732599004] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 18:32:38,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 18:32:38,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 26 [2025-03-16 18:32:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276042365] [2025-03-16 18:32:38,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 18:32:38,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-16 18:32:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:38,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-16 18:32:38,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2025-03-16 18:32:38,984 INFO L87 Difference]: Start difference. First operand 12284 states and 20781 transitions. Second operand has 26 states, 25 states have (on average 11.52) internal successors, (288), 22 states have internal predecessors, (288), 11 states have call successors, (50), 6 states have call predecessors, (50), 15 states have return successors, (51), 14 states have call predecessors, (51), 10 states have call successors, (51) [2025-03-16 18:32:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:48,895 INFO L93 Difference]: Finished difference Result 69047 states and 119893 transitions. [2025-03-16 18:32:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-16 18:32:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 11.52) internal successors, (288), 22 states have internal predecessors, (288), 11 states have call successors, (50), 6 states have call predecessors, (50), 15 states have return successors, (51), 14 states have call predecessors, (51), 10 states have call successors, (51) Word has length 195 [2025-03-16 18:32:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:49,232 INFO L225 Difference]: With dead ends: 69047 [2025-03-16 18:32:49,232 INFO L226 Difference]: Without dead ends: 56880 [2025-03-16 18:32:49,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 394 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=580, Invalid=3202, Unknown=0, NotChecked=0, Total=3782 [2025-03-16 18:32:49,299 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 5963 mSDsluCounter, 15685 mSDsCounter, 0 mSdLazyCounter, 22991 mSolverCounterSat, 1752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6031 SdHoareTripleChecker+Valid, 17153 SdHoareTripleChecker+Invalid, 24743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1752 IncrementalHoareTripleChecker+Valid, 22991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:49,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6031 Valid, 17153 Invalid, 24743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1752 Valid, 22991 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2025-03-16 18:32:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56880 states. [2025-03-16 18:32:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56880 to 56422. [2025-03-16 18:32:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56422 states, 41149 states have (on average 1.5754939366691778) internal successors, (64830), 43983 states have internal predecessors, (64830), 12629 states have call successors, (12629), 1708 states have call predecessors, (12629), 2643 states have return successors, (20685), 12746 states have call predecessors, (20685), 12625 states have call successors, (20685) [2025-03-16 18:32:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56422 states to 56422 states and 98144 transitions. [2025-03-16 18:32:52,659 INFO L78 Accepts]: Start accepts. Automaton has 56422 states and 98144 transitions. Word has length 195 [2025-03-16 18:32:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:32:52,660 INFO L471 AbstractCegarLoop]: Abstraction has 56422 states and 98144 transitions. [2025-03-16 18:32:52,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 11.52) internal successors, (288), 22 states have internal predecessors, (288), 11 states have call successors, (50), 6 states have call predecessors, (50), 15 states have return successors, (51), 14 states have call predecessors, (51), 10 states have call successors, (51) [2025-03-16 18:32:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 56422 states and 98144 transitions. [2025-03-16 18:32:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-03-16 18:32:52,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:32:52,680 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:32:52,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-16 18:32:52,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-16 18:32:52,881 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:32:52,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:32:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1696170624, now seen corresponding path program 1 times [2025-03-16 18:32:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:32:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176766420] [2025-03-16 18:32:52,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:32:52,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-16 18:32:52,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-16 18:32:52,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:52,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-16 18:32:52,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:32:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176766420] [2025-03-16 18:32:52,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176766420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:32:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965860867] [2025-03-16 18:32:52,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:32:52,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:32:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:32:52,959 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:32:52,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-16 18:32:53,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-16 18:32:53,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-16 18:32:53,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:32:53,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:32:53,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:32:53,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:32:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 18:32:53,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:32:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965860867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:32:53,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:32:53,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:32:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175714044] [2025-03-16 18:32:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:32:53,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:32:53,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:32:53,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:32:53,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:32:53,281 INFO L87 Difference]: Start difference. First operand 56422 states and 98144 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:32:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:32:58,159 INFO L93 Difference]: Finished difference Result 113708 states and 199111 transitions. [2025-03-16 18:32:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:32:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 198 [2025-03-16 18:32:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:32:58,475 INFO L225 Difference]: With dead ends: 113708 [2025-03-16 18:32:58,475 INFO L226 Difference]: Without dead ends: 57432 [2025-03-16 18:32:58,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:32:58,687 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 10 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:32:58,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2311 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:32:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57432 states. [2025-03-16 18:33:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57432 to 57368. [2025-03-16 18:33:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57368 states, 41948 states have (on average 1.5749737770573091) internal successors, (66067), 44827 states have internal predecessors, (66067), 12629 states have call successors, (12629), 1820 states have call predecessors, (12629), 2790 states have return successors, (20521), 12736 states have call predecessors, (20521), 12625 states have call successors, (20521) [2025-03-16 18:33:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57368 states to 57368 states and 99217 transitions. [2025-03-16 18:33:02,597 INFO L78 Accepts]: Start accepts. Automaton has 57368 states and 99217 transitions. Word has length 198 [2025-03-16 18:33:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:02,598 INFO L471 AbstractCegarLoop]: Abstraction has 57368 states and 99217 transitions. [2025-03-16 18:33:02,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:33:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 57368 states and 99217 transitions. [2025-03-16 18:33:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-03-16 18:33:02,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:02,624 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:02,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:02,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:02,824 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:02,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1282728025, now seen corresponding path program 1 times [2025-03-16 18:33:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:02,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997379846] [2025-03-16 18:33:02,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:02,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:33:02,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:33:02,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:02,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-03-16 18:33:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997379846] [2025-03-16 18:33:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997379846] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:03,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025845100] [2025-03-16 18:33:03,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:03,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:03,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:03,031 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:03,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-16 18:33:03,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:33:03,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:33:03,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:03,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:03,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:03,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-16 18:33:03,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025845100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-16 18:33:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438598541] [2025-03-16 18:33:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:03,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:03,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:03,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:03,370 INFO L87 Difference]: Start difference. First operand 57368 states and 99217 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-16 18:33:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:06,667 INFO L93 Difference]: Finished difference Result 98488 states and 170035 transitions. [2025-03-16 18:33:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:06,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 197 [2025-03-16 18:33:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:07,128 INFO L225 Difference]: With dead ends: 98488 [2025-03-16 18:33:07,128 INFO L226 Difference]: Without dead ends: 57368 [2025-03-16 18:33:07,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:07,321 INFO L435 NwaCegarLoop]: 793 mSDtfsCounter, 9 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:07,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2363 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57368 states. [2025-03-16 18:33:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57368 to 57362. [2025-03-16 18:33:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57362 states, 41942 states have (on average 1.574960659958991) internal successors, (66057), 44821 states have internal predecessors, (66057), 12629 states have call successors, (12629), 1820 states have call predecessors, (12629), 2790 states have return successors, (20521), 12736 states have call predecessors, (20521), 12625 states have call successors, (20521) [2025-03-16 18:33:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57362 states to 57362 states and 99207 transitions. [2025-03-16 18:33:10,630 INFO L78 Accepts]: Start accepts. Automaton has 57362 states and 99207 transitions. Word has length 197 [2025-03-16 18:33:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:10,631 INFO L471 AbstractCegarLoop]: Abstraction has 57362 states and 99207 transitions. [2025-03-16 18:33:10,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-16 18:33:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 57362 states and 99207 transitions. [2025-03-16 18:33:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-16 18:33:10,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:10,650 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:10,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:10,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-16 18:33:10,850 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:10,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1549425449, now seen corresponding path program 1 times [2025-03-16 18:33:10,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:10,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314086243] [2025-03-16 18:33:10,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:10,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:10,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:33:10,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:33:10,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:10,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-16 18:33:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314086243] [2025-03-16 18:33:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314086243] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386035461] [2025-03-16 18:33:10,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:10,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:10,915 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:10,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-16 18:33:11,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:33:11,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:33:11,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:11,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:11,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:11,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-16 18:33:11,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386035461] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303703269] [2025-03-16 18:33:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:11,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:11,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:11,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:11,193 INFO L87 Difference]: Start difference. First operand 57362 states and 99207 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)