./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product27.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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:18:07,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:18:07,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:18:07,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:18:07,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:18:07,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:18:07,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:18:07,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:18:07,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:18:07,810 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:18:07,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:18:07,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:18:07,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:18:07,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:18:07,811 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:18:07,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:18:07,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:18:07,812 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:18:07,813 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:18:07,813 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:18:07,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:18:07,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:18:07,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:18:07,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:07,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:18:07,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:18:07,814 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 -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2025-03-03 14:18:08,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:18:08,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:18:08,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:18:08,063 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:18:08,063 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:18:08,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-03-03 14:18:09,235 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f709e4fa/60c2168e583144a6a7e72cc970b6d62f/FLAG791edb007 [2025-03-03 14:18:09,584 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:18:09,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-03-03 14:18:09,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f709e4fa/60c2168e583144a6a7e72cc970b6d62f/FLAG791edb007 [2025-03-03 14:18:09,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f709e4fa/60c2168e583144a6a7e72cc970b6d62f [2025-03-03 14:18:09,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:18:09,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:18:09,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:09,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:18:09,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:18:09,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:09" (1/1) ... [2025-03-03 14:18:09,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203238d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:09, skipping insertion in model container [2025-03-03 14:18:09,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:09" (1/1) ... [2025-03-03 14:18:09,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:18:10,087 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_spec3_product27.cil.c[73003,73016] [2025-03-03 14:18:10,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:10,100 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:18:10,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2025-03-03 14:18:10,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1613] [2025-03-03 14:18:10,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1707] [2025-03-03 14:18:10,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1825] [2025-03-03 14:18:10,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2012] [2025-03-03 14:18:10,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2030] [2025-03-03 14:18:10,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2381] [2025-03-03 14:18:10,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2025-03-03 14:18:10,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3077] [2025-03-03 14:18:10,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3443] [2025-03-03 14:18:10,208 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_spec3_product27.cil.c[73003,73016] [2025-03-03 14:18:10,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:10,229 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:18:10,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10 WrapperNode [2025-03-03 14:18:10,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:10,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:10,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:18:10,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:18:10,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,287 INFO L138 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1131 [2025-03-03 14:18:10,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:10,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:18:10,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:18:10,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:18:10,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,317 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:18:10,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,329 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:18:10,345 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:18:10,345 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:18:10,345 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:18:10,346 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:10,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:18:10,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:18:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:18:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:18:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:18:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:18:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:18:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:18:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:18:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:18:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:18:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:18:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:18:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:18:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:18:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:18:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:18:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:18:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:18:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:18:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:18:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:18:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:18:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:18:10,549 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:18:10,551 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:18:10,579 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L366: #res := ~retValue_acc~4; [2025-03-03 14:18:10,603 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1744: #res := ~retValue_acc~17; [2025-03-03 14:18:10,631 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1601: #res := ~retValue_acc~15; [2025-03-03 14:18:10,887 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L880: #res#1 := ~retValue_acc~9#1; [2025-03-03 14:18:10,887 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L851-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~8#1; [2025-03-03 14:18:10,895 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1015: #res := ~retValue_acc~13; [2025-03-03 14:18:10,954 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L486-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-03-03 14:18:10,954 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L499-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-03-03 14:18:11,112 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1001-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-03-03 14:18:11,117 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3039: #res := ~retValue_acc~24; [2025-03-03 14:18:11,127 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1822: #res := ~retValue_acc~19; [2025-03-03 14:18:11,129 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L141: #res := ~retValue_acc~0; [2025-03-03 14:18:11,130 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L314: #res := ~retValue_acc~1; [2025-03-03 14:18:11,149 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L970: #res := ~retValue_acc~11; [2025-03-03 14:18:11,263 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1783: #res := ~retValue_acc~18; [2025-03-03 14:18:11,278 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: #res := ~retValue_acc~3; [2025-03-03 14:18:11,311 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L406-1: isEmpty_#res#1 := isEmpty_~retValue_acc~5#1; [2025-03-03 14:18:11,361 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2728: #res := ~retValue_acc~23; [2025-03-03 14:18:11,426 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3074-1: valid_product_#res#1 := valid_product_~retValue_acc~26#1; [2025-03-03 14:18:11,427 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2378-1: main_#res#1 := main_~retValue_acc~21#1; [2025-03-03 14:18:11,439 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2492: #res := ~retValue_acc~22; [2025-03-03 14:18:11,562 INFO L? ?]: Removed 469 outVars from TransFormulas that were not future-live. [2025-03-03 14:18:11,562 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:18:11,585 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:18:11,585 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:18:11,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:11 BoogieIcfgContainer [2025-03-03 14:18:11,585 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:18:11,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:18:11,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:18:11,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:18:11,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:18:09" (1/3) ... [2025-03-03 14:18:11,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c21dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:11, skipping insertion in model container [2025-03-03 14:18:11,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (2/3) ... [2025-03-03 14:18:11,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c21dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:11, skipping insertion in model container [2025-03-03 14:18:11,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:11" (3/3) ... [2025-03-03 14:18:11,593 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2025-03-03 14:18:11,605 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:18:11,609 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product27.cil.c that has 28 procedures, 597 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:18:11,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:18:11,661 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;@6e6f5a38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:18:11,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:18:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 460 states have (on average 1.6695652173913043) internal successors, (768), 478 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-03 14:18:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 14:18:11,689 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:11,690 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:11,690 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:11,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2036171371, now seen corresponding path program 1 times [2025-03-03 14:18:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:11,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773732138] [2025-03-03 14:18:11,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:11,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 14:18:11,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 14:18:11,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:11,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773732138] [2025-03-03 14:18:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773732138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73581171] [2025-03-03 14:18:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:12,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:12,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:12,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:12,369 INFO L87 Difference]: Start difference. First operand has 597 states, 460 states have (on average 1.6695652173913043) internal successors, (768), 478 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:12,586 INFO L93 Difference]: Finished difference Result 1191 states and 1980 transitions. [2025-03-03 14:18:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:12,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2025-03-03 14:18:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:12,602 INFO L225 Difference]: With dead ends: 1191 [2025-03-03 14:18:12,603 INFO L226 Difference]: Without dead ends: 602 [2025-03-03 14:18:12,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:12,616 INFO L435 NwaCegarLoop]: 969 mSDtfsCounter, 91 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5728 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:12,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5728 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-03-03 14:18:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2025-03-03 14:18:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 481 states have internal predecessors, (770), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-03 14:18:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2025-03-03 14:18:12,708 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 113 [2025-03-03 14:18:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:12,708 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2025-03-03 14:18:12,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2025-03-03 14:18:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-03 14:18:12,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:12,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:12,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:18:12,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:12,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1314504120, now seen corresponding path program 1 times [2025-03-03 14:18:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410850582] [2025-03-03 14:18:12,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:12,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-03 14:18:12,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-03 14:18:12,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:12,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:12,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:12,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410850582] [2025-03-03 14:18:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410850582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:12,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:12,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063470831] [2025-03-03 14:18:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:12,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:12,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:12,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:12,872 INFO L87 Difference]: Start difference. First operand 600 states and 987 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:12,943 INFO L93 Difference]: Finished difference Result 1182 states and 1955 transitions. [2025-03-03 14:18:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2025-03-03 14:18:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:12,951 INFO L225 Difference]: With dead ends: 1182 [2025-03-03 14:18:12,951 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:18:12,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:12,956 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 14 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:12,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2866 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:18:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-03 14:18:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 442 states have (on average 1.6538461538461537) internal successors, (731), 458 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 944 transitions. [2025-03-03 14:18:12,984 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 944 transitions. Word has length 114 [2025-03-03 14:18:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:12,984 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 944 transitions. [2025-03-03 14:18:12,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 944 transitions. [2025-03-03 14:18:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-03 14:18:12,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:12,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:12,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:18:12,988 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:12,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash 974433635, now seen corresponding path program 1 times [2025-03-03 14:18:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:12,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429328955] [2025-03-03 14:18:12,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-03 14:18:13,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-03 14:18:13,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429328955] [2025-03-03 14:18:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429328955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782148198] [2025-03-03 14:18:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,214 INFO L87 Difference]: Start difference. First operand 576 states and 944 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,284 INFO L93 Difference]: Finished difference Result 1145 states and 1887 transitions. [2025-03-03 14:18:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2025-03-03 14:18:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,291 INFO L225 Difference]: With dead ends: 1145 [2025-03-03 14:18:13,291 INFO L226 Difference]: Without dead ends: 570 [2025-03-03 14:18:13,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,295 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 77 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5528 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-03 14:18:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-03 14:18:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.646788990825688) internal successors, (718), 452 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 931 transitions. [2025-03-03 14:18:13,321 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 931 transitions. Word has length 114 [2025-03-03 14:18:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,322 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 931 transitions. [2025-03-03 14:18:13,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 931 transitions. [2025-03-03 14:18:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-03 14:18:13,326 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,326 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:13,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:18:13,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1035860433, now seen corresponding path program 1 times [2025-03-03 14:18:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639592573] [2025-03-03 14:18:13,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-03 14:18:13,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 14:18:13,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:13,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639592573] [2025-03-03 14:18:13,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639592573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778362674] [2025-03-03 14:18:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,510 INFO L87 Difference]: Start difference. First operand 570 states and 931 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,585 INFO L93 Difference]: Finished difference Result 1133 states and 1861 transitions. [2025-03-03 14:18:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2025-03-03 14:18:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,590 INFO L225 Difference]: With dead ends: 1133 [2025-03-03 14:18:13,590 INFO L226 Difference]: Without dead ends: 564 [2025-03-03 14:18:13,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,594 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 63 mSDsluCounter, 4547 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5468 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-03 14:18:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-03 14:18:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 446 states have internal predecessors, (705), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 918 transitions. [2025-03-03 14:18:13,628 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 918 transitions. Word has length 115 [2025-03-03 14:18:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,628 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 918 transitions. [2025-03-03 14:18:13,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 918 transitions. [2025-03-03 14:18:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-03 14:18:13,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,632 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:13,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:18:13,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 983899125, now seen corresponding path program 1 times [2025-03-03 14:18:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071601385] [2025-03-03 14:18:13,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-03 14:18:13,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-03 14:18:13,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:13,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071601385] [2025-03-03 14:18:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071601385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838630103] [2025-03-03 14:18:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,785 INFO L87 Difference]: Start difference. First operand 564 states and 918 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,862 INFO L93 Difference]: Finished difference Result 1121 states and 1835 transitions. [2025-03-03 14:18:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2025-03-03 14:18:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,868 INFO L225 Difference]: With dead ends: 1121 [2025-03-03 14:18:13,868 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:18:13,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,872 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 49 mSDsluCounter, 4499 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5408 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5408 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:18:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:18:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6297169811320755) internal successors, (691), 440 states have internal predecessors, (691), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2025-03-03 14:18:13,929 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 116 [2025-03-03 14:18:13,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,929 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2025-03-03 14:18:13,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:13,930 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2025-03-03 14:18:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-03 14:18:13,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,934 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:13,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:18:13,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash -360347959, now seen corresponding path program 1 times [2025-03-03 14:18:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553036381] [2025-03-03 14:18:13,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-03 14:18:13,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 14:18:13,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553036381] [2025-03-03 14:18:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553036381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138926050] [2025-03-03 14:18:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,048 INFO L87 Difference]: Start difference. First operand 558 states and 904 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,095 INFO L93 Difference]: Finished difference Result 1100 states and 1794 transitions. [2025-03-03 14:18:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,095 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2025-03-03 14:18:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,098 INFO L225 Difference]: With dead ends: 1100 [2025-03-03 14:18:14,099 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:18:14,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,101 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 15 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2652 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:18:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:18:14,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6273584905660377) internal successors, (690), 440 states have internal predecessors, (690), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 903 transitions. [2025-03-03 14:18:14,120 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 903 transitions. Word has length 117 [2025-03-03 14:18:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,121 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 903 transitions. [2025-03-03 14:18:14,121 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 903 transitions. [2025-03-03 14:18:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-03 14:18:14,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,123 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:14,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:18:14,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash -478254395, now seen corresponding path program 1 times [2025-03-03 14:18:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087446187] [2025-03-03 14:18:14,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 14:18:14,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 14:18:14,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087446187] [2025-03-03 14:18:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087446187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939446791] [2025-03-03 14:18:14,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,235 INFO L87 Difference]: Start difference. First operand 558 states and 903 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,276 INFO L93 Difference]: Finished difference Result 1100 states and 1792 transitions. [2025-03-03 14:18:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2025-03-03 14:18:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,280 INFO L225 Difference]: With dead ends: 1100 [2025-03-03 14:18:14,280 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:18:14,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,283 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 14 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2654 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:18:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:18:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.625) internal successors, (689), 440 states have internal predecessors, (689), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 902 transitions. [2025-03-03 14:18:14,305 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 902 transitions. Word has length 118 [2025-03-03 14:18:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,305 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 902 transitions. [2025-03-03 14:18:14,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 902 transitions. [2025-03-03 14:18:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-03 14:18:14,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:14,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:18:14,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash 910945932, now seen corresponding path program 1 times [2025-03-03 14:18:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239984177] [2025-03-03 14:18:14,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-03 14:18:14,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 14:18:14,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239984177] [2025-03-03 14:18:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239984177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849380483] [2025-03-03 14:18:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,402 INFO L87 Difference]: Start difference. First operand 558 states and 902 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,447 INFO L93 Difference]: Finished difference Result 1100 states and 1790 transitions. [2025-03-03 14:18:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,449 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2025-03-03 14:18:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,453 INFO L225 Difference]: With dead ends: 1100 [2025-03-03 14:18:14,453 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:18:14,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,456 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 13 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2656 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:18:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:18:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6226415094339623) internal successors, (688), 440 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 901 transitions. [2025-03-03 14:18:14,476 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 901 transitions. Word has length 119 [2025-03-03 14:18:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,476 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 901 transitions. [2025-03-03 14:18:14,476 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 901 transitions. [2025-03-03 14:18:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-03 14:18:14,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,479 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:14,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:18:14,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1775815656, now seen corresponding path program 1 times [2025-03-03 14:18:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808442602] [2025-03-03 14:18:14,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:18:14,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:18:14,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:14,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808442602] [2025-03-03 14:18:14,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808442602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877960015] [2025-03-03 14:18:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,587 INFO L87 Difference]: Start difference. First operand 558 states and 901 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,617 INFO L93 Difference]: Finished difference Result 1100 states and 1788 transitions. [2025-03-03 14:18:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2025-03-03 14:18:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,621 INFO L225 Difference]: With dead ends: 1100 [2025-03-03 14:18:14,621 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:18:14,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,624 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 12 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2658 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:18:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:18:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6202830188679245) internal successors, (687), 440 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 900 transitions. [2025-03-03 14:18:14,639 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 900 transitions. Word has length 120 [2025-03-03 14:18:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,639 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 900 transitions. [2025-03-03 14:18:14,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:18:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 900 transitions. [2025-03-03 14:18:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-03 14:18:14,641 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:14,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:18:14,642 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,642 INFO L85 PathProgramCache]: Analyzing trace with hash -728661425, now seen corresponding path program 1 times [2025-03-03 14:18:14,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522125653] [2025-03-03 14:18:14,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-03 14:18:14,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-03 14:18:14,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:18:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522125653] [2025-03-03 14:18:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522125653] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380442521] [2025-03-03 14:18:14,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:14,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:14,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:18:14,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-03 14:18:15,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-03 14:18:15,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:15,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:15,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:15,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:15,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380442521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:15,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:15,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000817944] [2025-03-03 14:18:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:15,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:15,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:15,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:15,259 INFO L87 Difference]: Start difference. First operand 558 states and 900 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:15,322 INFO L93 Difference]: Finished difference Result 1585 states and 2588 transitions. [2025-03-03 14:18:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2025-03-03 14:18:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:15,329 INFO L225 Difference]: With dead ends: 1585 [2025-03-03 14:18:15,329 INFO L226 Difference]: Without dead ends: 1045 [2025-03-03 14:18:15,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:15,332 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 824 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:15,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2337 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2025-03-03 14:18:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1030. [2025-03-03 14:18:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 790 states have (on average 1.6329113924050633) internal successors, (1290), 821 states have internal predecessors, (1290), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2025-03-03 14:18:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1674 transitions. [2025-03-03 14:18:15,376 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1674 transitions. Word has length 121 [2025-03-03 14:18:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:15,377 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1674 transitions. [2025-03-03 14:18:15,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1674 transitions. [2025-03-03 14:18:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-03 14:18:15,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:15,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:15,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:15,581 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,SelfDestructingSolverStorable9 [2025-03-03 14:18:15,582 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:15,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -552510455, now seen corresponding path program 1 times [2025-03-03 14:18:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094343545] [2025-03-03 14:18:15,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:15,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-03 14:18:15,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 14:18:15,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:15,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:18:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094343545] [2025-03-03 14:18:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094343545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970286353] [2025-03-03 14:18:15,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:15,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:15,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:15,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:15,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:18:15,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-03 14:18:16,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 14:18:16,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:16,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:16,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:16,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:16,208 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970286353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817984367] [2025-03-03 14:18:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:16,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:16,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:16,209 INFO L87 Difference]: Start difference. First operand 1030 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:16,300 INFO L93 Difference]: Finished difference Result 2529 states and 4138 transitions. [2025-03-03 14:18:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2025-03-03 14:18:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:16,309 INFO L225 Difference]: With dead ends: 2529 [2025-03-03 14:18:16,309 INFO L226 Difference]: Without dead ends: 1517 [2025-03-03 14:18:16,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:16,313 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 825 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:16,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1756 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2025-03-03 14:18:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1469. [2025-03-03 14:18:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1129 states have (on average 1.6448184233835252) internal successors, (1857), 1175 states have internal predecessors, (1857), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2025-03-03 14:18:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2406 transitions. [2025-03-03 14:18:16,368 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2406 transitions. Word has length 122 [2025-03-03 14:18:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:16,368 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2406 transitions. [2025-03-03 14:18:16,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-03 14:18:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2406 transitions. [2025-03-03 14:18:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-03 14:18:16,373 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:16,373 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:16,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:16,574 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,SelfDestructingSolverStorable10 [2025-03-03 14:18:16,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:16,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1904669776, now seen corresponding path program 1 times [2025-03-03 14:18:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4617762] [2025-03-03 14:18:16,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:16,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:16,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-03 14:18:16,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-03 14:18:16,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:16,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 14:18:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4617762] [2025-03-03 14:18:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4617762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027096295] [2025-03-03 14:18:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:16,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:16,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:16,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:16,695 INFO L87 Difference]: Start difference. First operand 1469 states and 2406 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:18:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:17,164 INFO L93 Difference]: Finished difference Result 4343 states and 7237 transitions. [2025-03-03 14:18:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2025-03-03 14:18:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:17,179 INFO L225 Difference]: With dead ends: 4343 [2025-03-03 14:18:17,179 INFO L226 Difference]: Without dead ends: 2892 [2025-03-03 14:18:17,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:17,186 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 894 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:17,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4621 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2025-03-03 14:18:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2845. [2025-03-03 14:18:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2191 states have (on average 1.6481058877225012) internal successors, (3611), 2279 states have internal predecessors, (3611), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (615), 513 states have call predecessors, (615), 517 states have call successors, (615) [2025-03-03 14:18:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4747 transitions. [2025-03-03 14:18:17,299 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4747 transitions. Word has length 124 [2025-03-03 14:18:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:17,300 INFO L471 AbstractCegarLoop]: Abstraction has 2845 states and 4747 transitions. [2025-03-03 14:18:17,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:18:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4747 transitions. [2025-03-03 14:18:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:18:17,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:17,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:17,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 14:18:17,304 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:17,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2052828101, now seen corresponding path program 1 times [2025-03-03 14:18:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:17,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807766758] [2025-03-03 14:18:17,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:17,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:18:17,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:18:17,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:17,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:18:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807766758] [2025-03-03 14:18:17,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807766758] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960953077] [2025-03-03 14:18:17,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:17,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:17,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:17,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:18:17,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:18:17,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:18:17,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:17,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:17,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:18:17,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:17,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:17,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960953077] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:17,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:17,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423860786] [2025-03-03 14:18:17,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:17,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:17,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:17,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:17,889 INFO L87 Difference]: Start difference. First operand 2845 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:18:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:18,170 INFO L93 Difference]: Finished difference Result 8245 states and 13946 transitions. [2025-03-03 14:18:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2025-03-03 14:18:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:18,211 INFO L225 Difference]: With dead ends: 8245 [2025-03-03 14:18:18,211 INFO L226 Difference]: Without dead ends: 5419 [2025-03-03 14:18:18,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:18,234 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 734 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:18,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1727 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2025-03-03 14:18:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5382. [2025-03-03 14:18:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 4132 states have (on average 1.6166505324298162) internal successors, (6680), 4306 states have internal predecessors, (6680), 990 states have call successors, (990), 254 states have call predecessors, (990), 259 states have return successors, (1275), 977 states have call predecessors, (1275), 984 states have call successors, (1275) [2025-03-03 14:18:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8945 transitions. [2025-03-03 14:18:18,526 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 8945 transitions. Word has length 125 [2025-03-03 14:18:18,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:18,526 INFO L471 AbstractCegarLoop]: Abstraction has 5382 states and 8945 transitions. [2025-03-03 14:18:18,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:18:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 8945 transitions. [2025-03-03 14:18:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:18:18,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:18,530 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:18,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 14:18:18,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:18,731 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:18,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1782717066, now seen corresponding path program 1 times [2025-03-03 14:18:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836166900] [2025-03-03 14:18:18,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:18,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:18:18,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:18:18,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:18,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:18:18,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:18,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836166900] [2025-03-03 14:18:18,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836166900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535796448] [2025-03-03 14:18:18,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:18,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:18,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:18,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:18,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:18:19,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:18:19,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:18:19,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:19,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:19,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:18:19,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 14:18:19,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535796448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:19,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:19,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2025-03-03 14:18:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671330594] [2025-03-03 14:18:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:19,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:19,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:19,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:19,253 INFO L87 Difference]: Start difference. First operand 5382 states and 8945 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:18:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:19,626 INFO L93 Difference]: Finished difference Result 16032 states and 26968 transitions. [2025-03-03 14:18:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2025-03-03 14:18:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:19,695 INFO L225 Difference]: With dead ends: 16032 [2025-03-03 14:18:19,695 INFO L226 Difference]: Without dead ends: 10671 [2025-03-03 14:18:19,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:19,715 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 885 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:19,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1825 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2025-03-03 14:18:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 10568. [2025-03-03 14:18:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 8140 states have (on average 1.6200245700245701) internal successors, (13187), 8468 states have internal predecessors, (13187), 1920 states have call successors, (1920), 490 states have call predecessors, (1920), 507 states have return successors, (2544), 1915 states have call predecessors, (2544), 1910 states have call successors, (2544) [2025-03-03 14:18:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 17651 transitions. [2025-03-03 14:18:20,171 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 17651 transitions. Word has length 127 [2025-03-03 14:18:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:20,172 INFO L471 AbstractCegarLoop]: Abstraction has 10568 states and 17651 transitions. [2025-03-03 14:18:20,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:18:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 17651 transitions. [2025-03-03 14:18:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:18:20,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:20,177 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:20,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 14:18:20,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:20,381 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:20,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2006691605, now seen corresponding path program 1 times [2025-03-03 14:18:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:20,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024944135] [2025-03-03 14:18:20,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:20,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:20,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:18:20,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:18:20,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:20,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:18:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024944135] [2025-03-03 14:18:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024944135] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758433726] [2025-03-03 14:18:20,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:20,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:20,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:18:20,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:18:20,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:18:20,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:20,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:20,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:18:20,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:21,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758433726] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:21,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:21,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:18:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402767541] [2025-03-03 14:18:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:21,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:21,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:21,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:18:21,003 INFO L87 Difference]: Start difference. First operand 10568 states and 17651 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 14:18:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:22,018 INFO L93 Difference]: Finished difference Result 19957 states and 33404 transitions. [2025-03-03 14:18:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2025-03-03 14:18:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:22,097 INFO L225 Difference]: With dead ends: 19957 [2025-03-03 14:18:22,098 INFO L226 Difference]: Without dead ends: 9407 [2025-03-03 14:18:22,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:18:22,151 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 755 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:22,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 4149 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:18:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2025-03-03 14:18:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 9385. [2025-03-03 14:18:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9385 states, 7245 states have (on average 1.60703933747412) internal successors, (11643), 7520 states have internal predecessors, (11643), 1678 states have call successors, (1678), 446 states have call predecessors, (1678), 461 states have return successors, (2198), 1674 states have call predecessors, (2198), 1668 states have call successors, (2198) [2025-03-03 14:18:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 15519 transitions. [2025-03-03 14:18:22,573 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 15519 transitions. Word has length 127 [2025-03-03 14:18:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:22,573 INFO L471 AbstractCegarLoop]: Abstraction has 9385 states and 15519 transitions. [2025-03-03 14:18:22,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 14:18:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 15519 transitions. [2025-03-03 14:18:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:18:22,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:22,578 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:22,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:22,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:18:22,780 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:22,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash -107660466, now seen corresponding path program 1 times [2025-03-03 14:18:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:22,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818679157] [2025-03-03 14:18:22,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:22,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:22,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:18:22,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:18:22,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:22,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:18:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818679157] [2025-03-03 14:18:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818679157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228337387] [2025-03-03 14:18:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:22,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:22,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:22,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:22,861 INFO L87 Difference]: Start difference. First operand 9385 states and 15519 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:18:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:23,285 INFO L93 Difference]: Finished difference Result 18800 states and 31433 transitions. [2025-03-03 14:18:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:23,285 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2025-03-03 14:18:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:23,340 INFO L225 Difference]: With dead ends: 18800 [2025-03-03 14:18:23,340 INFO L226 Difference]: Without dead ends: 9433 [2025-03-03 14:18:23,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:23,388 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 12 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:23,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2624 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9433 states. [2025-03-03 14:18:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9433 to 9401. [2025-03-03 14:18:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9401 states, 7257 states have (on average 1.605484359928345) internal successors, (11651), 7532 states have internal predecessors, (11651), 1678 states have call successors, (1678), 454 states have call predecessors, (1678), 465 states have return successors, (2172), 1670 states have call predecessors, (2172), 1668 states have call successors, (2172) [2025-03-03 14:18:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 15501 transitions. [2025-03-03 14:18:23,746 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 15501 transitions. Word has length 127 [2025-03-03 14:18:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:23,747 INFO L471 AbstractCegarLoop]: Abstraction has 9401 states and 15501 transitions. [2025-03-03 14:18:23,747 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:18:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 15501 transitions. [2025-03-03 14:18:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-03 14:18:23,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:23,751 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:23,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:18:23,751 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:23,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1166827164, now seen corresponding path program 1 times [2025-03-03 14:18:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726907275] [2025-03-03 14:18:23,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:23,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-03 14:18:23,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 14:18:23,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:23,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:18:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726907275] [2025-03-03 14:18:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726907275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:23,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:23,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448728660] [2025-03-03 14:18:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:23,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:23,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:23,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:23,928 INFO L87 Difference]: Start difference. First operand 9401 states and 15501 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:18:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:24,879 INFO L93 Difference]: Finished difference Result 28149 states and 47669 transitions. [2025-03-03 14:18:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:24,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2025-03-03 14:18:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:25,015 INFO L225 Difference]: With dead ends: 28149 [2025-03-03 14:18:25,015 INFO L226 Difference]: Without dead ends: 18766 [2025-03-03 14:18:25,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:25,080 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 888 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 4497 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:25,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 4497 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2025-03-03 14:18:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 18665. [2025-03-03 14:18:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18665 states, 14420 states have (on average 1.6020804438280167) internal successors, (23102), 14961 states have internal predecessors, (23102), 3311 states have call successors, (3311), 902 states have call predecessors, (3311), 933 states have return successors, (5013), 3313 states have call predecessors, (5013), 3293 states have call successors, (5013) [2025-03-03 14:18:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18665 states to 18665 states and 31426 transitions. [2025-03-03 14:18:25,960 INFO L78 Accepts]: Start accepts. Automaton has 18665 states and 31426 transitions. Word has length 135 [2025-03-03 14:18:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:25,960 INFO L471 AbstractCegarLoop]: Abstraction has 18665 states and 31426 transitions. [2025-03-03 14:18:25,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:18:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 18665 states and 31426 transitions. [2025-03-03 14:18:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:18:25,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:25,964 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:25,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:18:25,964 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:25,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1250280153, now seen corresponding path program 1 times [2025-03-03 14:18:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640438464] [2025-03-03 14:18:25,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:25,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:18:25,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:18:25,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:18:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640438464] [2025-03-03 14:18:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640438464] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297709575] [2025-03-03 14:18:26,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:26,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:26,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:26,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:26,037 INFO L87 Difference]: Start difference. First operand 18665 states and 31426 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:18:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:26,887 INFO L93 Difference]: Finished difference Result 37456 states and 64075 transitions. [2025-03-03 14:18:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:26,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2025-03-03 14:18:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:26,989 INFO L225 Difference]: With dead ends: 37456 [2025-03-03 14:18:26,989 INFO L226 Difference]: Without dead ends: 18809 [2025-03-03 14:18:27,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:27,087 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 12 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:27,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2618 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18809 states. [2025-03-03 14:18:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18809 to 18745. [2025-03-03 14:18:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18745 states, 14492 states have (on average 1.5996411813414297) internal successors, (23182), 15017 states have internal predecessors, (23182), 3311 states have call successors, (3311), 934 states have call predecessors, (3311), 941 states have return successors, (4973), 3305 states have call predecessors, (4973), 3293 states have call successors, (4973) [2025-03-03 14:18:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18745 states to 18745 states and 31466 transitions. [2025-03-03 14:18:27,784 INFO L78 Accepts]: Start accepts. Automaton has 18745 states and 31466 transitions. Word has length 136 [2025-03-03 14:18:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:27,785 INFO L471 AbstractCegarLoop]: Abstraction has 18745 states and 31466 transitions. [2025-03-03 14:18:27,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:18:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 18745 states and 31466 transitions. [2025-03-03 14:18:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-03 14:18:27,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:27,790 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:27,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:18:27,791 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:27,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1754946811, now seen corresponding path program 1 times [2025-03-03 14:18:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:27,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185960366] [2025-03-03 14:18:27,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:27,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-03 14:18:27,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-03 14:18:27,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:27,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 14:18:27,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:27,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185960366] [2025-03-03 14:18:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185960366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:27,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:27,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588871705] [2025-03-03 14:18:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:27,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:27,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:27,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:27,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:27,919 INFO L87 Difference]: Start difference. First operand 18745 states and 31466 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:18:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:29,788 INFO L93 Difference]: Finished difference Result 56321 states and 98233 transitions. [2025-03-03 14:18:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:29,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2025-03-03 14:18:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:30,117 INFO L225 Difference]: With dead ends: 56321 [2025-03-03 14:18:30,117 INFO L226 Difference]: Without dead ends: 37594 [2025-03-03 14:18:30,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:30,311 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 884 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:30,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 4461 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37594 states. [2025-03-03 14:18:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37594 to 37429. [2025-03-03 14:18:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37429 states, 28947 states have (on average 1.596262134245345) internal successors, (46207), 29988 states have internal predecessors, (46207), 6588 states have call successors, (6588), 1862 states have call predecessors, (6588), 1893 states have return successors, (11990), 6602 states have call predecessors, (11990), 6554 states have call successors, (11990) [2025-03-03 14:18:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37429 states to 37429 states and 64785 transitions. [2025-03-03 14:18:32,120 INFO L78 Accepts]: Start accepts. Automaton has 37429 states and 64785 transitions. Word has length 145 [2025-03-03 14:18:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:32,123 INFO L471 AbstractCegarLoop]: Abstraction has 37429 states and 64785 transitions. [2025-03-03 14:18:32,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-03 14:18:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 37429 states and 64785 transitions. [2025-03-03 14:18:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-03 14:18:32,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:32,128 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:32,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:18:32,128 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:32,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1933612151, now seen corresponding path program 1 times [2025-03-03 14:18:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308162129] [2025-03-03 14:18:32,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:32,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:32,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:18:32,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:18:32,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:32,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-03 14:18:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308162129] [2025-03-03 14:18:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308162129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316838717] [2025-03-03 14:18:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:32,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:32,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:32,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:32,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:32,202 INFO L87 Difference]: Start difference. First operand 37429 states and 64785 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:18:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:34,465 INFO L93 Difference]: Finished difference Result 75128 states and 133369 transitions. [2025-03-03 14:18:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2025-03-03 14:18:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:34,802 INFO L225 Difference]: With dead ends: 75128 [2025-03-03 14:18:34,802 INFO L226 Difference]: Without dead ends: 37717 [2025-03-03 14:18:35,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:35,274 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 11 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:35,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2618 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37717 states. [2025-03-03 14:18:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37717 to 37589. [2025-03-03 14:18:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37589 states, 29091 states have (on average 1.593860644185487) internal successors, (46367), 30132 states have internal predecessors, (46367), 6588 states have call successors, (6588), 1894 states have call predecessors, (6588), 1909 states have return successors, (11934), 6586 states have call predecessors, (11934), 6554 states have call successors, (11934) [2025-03-03 14:18:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37589 states to 37589 states and 64889 transitions. [2025-03-03 14:18:37,210 INFO L78 Accepts]: Start accepts. Automaton has 37589 states and 64889 transitions. Word has length 146 [2025-03-03 14:18:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:37,211 INFO L471 AbstractCegarLoop]: Abstraction has 37589 states and 64889 transitions. [2025-03-03 14:18:37,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:18:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 37589 states and 64889 transitions. [2025-03-03 14:18:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:18:37,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:37,217 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:37,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 14:18:37,217 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:37,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 715045086, now seen corresponding path program 1 times [2025-03-03 14:18:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492983779] [2025-03-03 14:18:37,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:37,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:18:37,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:18:37,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:37,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-03 14:18:37,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492983779] [2025-03-03 14:18:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492983779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:37,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148806481] [2025-03-03 14:18:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:37,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:37,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:37,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:37,368 INFO L87 Difference]: Start difference. First operand 37589 states and 64889 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:18:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:41,829 INFO L93 Difference]: Finished difference Result 113089 states and 207195 transitions. [2025-03-03 14:18:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2025-03-03 14:18:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:42,332 INFO L225 Difference]: With dead ends: 113089 [2025-03-03 14:18:42,332 INFO L226 Difference]: Without dead ends: 75518 [2025-03-03 14:18:42,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:42,748 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 879 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:42,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 4442 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75518 states. [2025-03-03 14:18:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75518 to 75225. [2025-03-03 14:18:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75225 states, 58226 states have (on average 1.5913165939614604) internal successors, (92656), 60299 states have internal predecessors, (92656), 13153 states have call successors, (13153), 3782 states have call predecessors, (13153), 3845 states have return successors, (30535), 13191 states have call predecessors, (30535), 13087 states have call successors, (30535) [2025-03-03 14:18:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75225 states to 75225 states and 136344 transitions. [2025-03-03 14:18:46,529 INFO L78 Accepts]: Start accepts. Automaton has 75225 states and 136344 transitions. Word has length 156 [2025-03-03 14:18:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:46,529 INFO L471 AbstractCegarLoop]: Abstraction has 75225 states and 136344 transitions. [2025-03-03 14:18:46,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:18:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 75225 states and 136344 transitions. [2025-03-03 14:18:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-03 14:18:46,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:46,535 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:46,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 14:18:46,535 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:46,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1730325253, now seen corresponding path program 1 times [2025-03-03 14:18:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808310301] [2025-03-03 14:18:46,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:46,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-03 14:18:46,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-03 14:18:46,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:46,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-03 14:18:46,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808310301] [2025-03-03 14:18:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808310301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341962416] [2025-03-03 14:18:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:46,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:46,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:46,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:46,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:46,609 INFO L87 Difference]: Start difference. First operand 75225 states and 136344 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:18:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:52,134 INFO L93 Difference]: Finished difference Result 151072 states and 285375 transitions. [2025-03-03 14:18:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2025-03-03 14:18:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:52,723 INFO L225 Difference]: With dead ends: 151072 [2025-03-03 14:18:52,723 INFO L226 Difference]: Without dead ends: 75865 [2025-03-03 14:18:53,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:53,868 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 10 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:53,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2618 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75865 states. [2025-03-03 14:18:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75865 to 75609. [2025-03-03 14:18:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75609 states, 58578 states have (on average 1.5883096042882994) internal successors, (93040), 60651 states have internal predecessors, (93040), 13153 states have call successors, (13153), 3846 states have call predecessors, (13153), 3877 states have return successors, (30471), 13159 states have call predecessors, (30471), 13087 states have call successors, (30471) [2025-03-03 14:18:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75609 states to 75609 states and 136664 transitions. [2025-03-03 14:18:57,568 INFO L78 Accepts]: Start accepts. Automaton has 75609 states and 136664 transitions. Word has length 157 [2025-03-03 14:18:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:57,568 INFO L471 AbstractCegarLoop]: Abstraction has 75609 states and 136664 transitions. [2025-03-03 14:18:57,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:18:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75609 states and 136664 transitions. [2025-03-03 14:18:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 14:18:57,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:57,577 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:57,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 14:18:57,577 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:57,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 912680165, now seen corresponding path program 1 times [2025-03-03 14:18:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372713421] [2025-03-03 14:18:57,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:57,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:18:57,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:18:57,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:57,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-03 14:18:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372713421] [2025-03-03 14:18:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372713421] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36045920] [2025-03-03 14:18:57,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:57,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:57,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:57,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:18:57,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:18:58,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:18:58,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:58,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:58,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:18:58,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-03 14:18:58,107 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:58,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36045920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:58,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:58,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-03 14:18:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253712022] [2025-03-03 14:18:58,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:58,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:58,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:58,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:58,108 INFO L87 Difference]: Start difference. First operand 75609 states and 136664 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)