./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec9_product30.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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:37:50,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:37:50,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:37:50,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:37:50,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:37:50,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:37:50,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:37:50,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:37:50,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:37:50,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:37:50,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:37:50,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:37:50,487 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:37:50,488 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:37:50,488 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:37:50,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:37:50,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:37:50,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:37:50,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:37:50,490 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 -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2025-03-16 18:37:50,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:37:50,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:37:50,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:37:50,741 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:37:50,741 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:37:50,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2025-03-16 18:37:51,873 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b292668b/c7fd868fb8ac4c39829738c78082a38c/FLAG9471fea3e [2025-03-16 18:37:52,216 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:37:52,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2025-03-16 18:37:52,241 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b292668b/c7fd868fb8ac4c39829738c78082a38c/FLAG9471fea3e [2025-03-16 18:37:52,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b292668b/c7fd868fb8ac4c39829738c78082a38c [2025-03-16 18:37:52,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:37:52,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:37:52,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:37:52,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:37:52,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:37:52,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6ac0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52, skipping insertion in model container [2025-03-16 18:37:52,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:37:52,511 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_spec9_product30.cil.c[11768,11781] [2025-03-16 18:37:52,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:37:52,671 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:37:52,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [414] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [452] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [461] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [626] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [640] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [739] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [859] [2025-03-16 18:37:52,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2444] [2025-03-16 18:37:52,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3105] [2025-03-16 18:37:52,701 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_spec9_product30.cil.c[11768,11781] [2025-03-16 18:37:52,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:37:52,790 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:37:52,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52 WrapperNode [2025-03-16 18:37:52,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:37:52,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:37:52,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:37:52,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:37:52,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,838 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 869 [2025-03-16 18:37:52,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:37:52,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:37:52,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:37:52,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:37:52,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,879 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:37:52,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,903 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:37:52,926 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:37:52,927 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:37:52,927 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:37:52,927 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (1/1) ... [2025-03-16 18:37:52,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:37:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:52,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:37:52,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:37:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:37:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:37:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:37:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:37:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:37:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:37:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:37:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2025-03-16 18:37:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:37:52,973 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:37:53,121 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:37:53,124 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:37:53,188 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L856: #res := ~retValue_acc~7; [2025-03-16 18:37:53,210 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L778: #res := ~retValue_acc~5; [2025-03-16 18:37:53,213 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L937: #res := ~retValue_acc~8; [2025-03-16 18:37:53,226 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1114: #res := ~retValue_acc~9; [2025-03-16 18:37:53,384 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1724-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~18#1; [2025-03-16 18:37:53,384 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1690: #res#1 := ~retValue_acc~17#1; [2025-03-16 18:37:53,453 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1822: #res := ~retValue_acc~21; [2025-03-16 18:37:53,462 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L817: #res := ~retValue_acc~6; [2025-03-16 18:37:53,479 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1206: #res := ~retValue_acc~13; [2025-03-16 18:37:53,599 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1651: #res := ~retValue_acc~16; [2025-03-16 18:37:53,611 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1157: #res := ~retValue_acc~11; [2025-03-16 18:37:53,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1299-1: isIdle_#res#1 := isIdle_~retValue_acc~15#1; [2025-03-16 18:37:53,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1286-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~14#1; [2025-03-16 18:37:53,789 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2791: #res := ~retValue_acc~24; [2025-03-16 18:37:53,876 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1780-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~19#1; [2025-03-16 18:37:53,877 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1808-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~20#1; [2025-03-16 18:37:53,920 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3452-1: main_#res#1 := main_~retValue_acc~27#1; [2025-03-16 18:37:53,920 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L449-1: valid_product_#res#1 := valid_product_~retValue_acc~4#1; [2025-03-16 18:37:53,929 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2555: #res := ~retValue_acc~23; [2025-03-16 18:37:53,930 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1123: #res := ~retValue_acc~10; [2025-03-16 18:37:53,933 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3102: #res := ~retValue_acc~25; [2025-03-16 18:37:54,026 INFO L? ?]: Removed 454 outVars from TransFormulas that were not future-live. [2025-03-16 18:37:54,026 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:37:54,046 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:37:54,046 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:37:54,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:37:54 BoogieIcfgContainer [2025-03-16 18:37:54,050 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:37:54,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:37:54,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:37:54,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:37:54,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:37:52" (1/3) ... [2025-03-16 18:37:54,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:37:54, skipping insertion in model container [2025-03-16 18:37:54,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:37:52" (2/3) ... [2025-03-16 18:37:54,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:37:54, skipping insertion in model container [2025-03-16 18:37:54,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:37:54" (3/3) ... [2025-03-16 18:37:54,057 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2025-03-16 18:37:54,065 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:37:54,067 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec9_product30.cil.c that has 27 procedures, 567 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:37:54,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:37:54,125 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;@1879aaa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:37:54,125 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:37:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 443 states have (on average 1.7042889390519187) internal successors, (755), 466 states have internal predecessors, (755), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-16 18:37:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-16 18:37:54,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:54,142 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:54,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:54,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -790652002, now seen corresponding path program 1 times [2025-03-16 18:37:54,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968265458] [2025-03-16 18:37:54,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:54,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-16 18:37:54,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-16 18:37:54,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:54,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:54,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968265458] [2025-03-16 18:37:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968265458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:54,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:54,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700757587] [2025-03-16 18:37:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:54,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:54,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:54,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:54,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:54,581 INFO L87 Difference]: Start difference. First operand has 567 states, 443 states have (on average 1.7042889390519187) internal successors, (755), 466 states have internal predecessors, (755), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:54,703 INFO L93 Difference]: Finished difference Result 1119 states and 1874 transitions. [2025-03-16 18:37:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2025-03-16 18:37:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:54,719 INFO L225 Difference]: With dead ends: 1119 [2025-03-16 18:37:54,719 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:37:54,724 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 [2025-03-16 18:37:54,725 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 5 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:54,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2777 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:37:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-16 18:37:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 438 states have (on average 1.7009132420091324) internal successors, (745), 459 states have internal predecessors, (745), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 932 transitions. [2025-03-16 18:37:54,783 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 932 transitions. Word has length 57 [2025-03-16 18:37:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:54,784 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 932 transitions. [2025-03-16 18:37:54,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:54,784 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 932 transitions. [2025-03-16 18:37:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:37:54,787 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:54,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:37:54,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:54,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -664920402, now seen corresponding path program 1 times [2025-03-16 18:37:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465433956] [2025-03-16 18:37:54,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:54,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:37:54,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:37:54,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:54,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465433956] [2025-03-16 18:37:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465433956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927419342] [2025-03-16 18:37:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:54,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:54,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:54,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:54,958 INFO L87 Difference]: Start difference. First operand 560 states and 932 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:55,003 INFO L93 Difference]: Finished difference Result 1107 states and 1846 transitions. [2025-03-16 18:37:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2025-03-16 18:37:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:55,008 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:37:55,008 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:37:55,010 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 [2025-03-16 18:37:55,010 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 4 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:55,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:37:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-16 18:37:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 438 states have (on average 1.6986301369863013) internal successors, (744), 459 states have internal predecessors, (744), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 931 transitions. [2025-03-16 18:37:55,045 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 931 transitions. Word has length 59 [2025-03-16 18:37:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:55,045 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 931 transitions. [2025-03-16 18:37:55,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 931 transitions. [2025-03-16 18:37:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:37:55,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:55,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:55,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:37:55,048 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:55,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash 633227360, now seen corresponding path program 1 times [2025-03-16 18:37:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:55,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015003257] [2025-03-16 18:37:55,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:55,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:55,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:37:55,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:37:55,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:55,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015003257] [2025-03-16 18:37:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015003257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:55,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:55,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989765483] [2025-03-16 18:37:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:55,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:55,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:55,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:55,176 INFO L87 Difference]: Start difference. First operand 560 states and 931 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:55,226 INFO L93 Difference]: Finished difference Result 1107 states and 1845 transitions. [2025-03-16 18:37:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2025-03-16 18:37:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:55,230 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:37:55,230 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:37:55,232 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 [2025-03-16 18:37:55,235 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 3 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2759 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 [2025-03-16 18:37:55,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2759 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:37:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-16 18:37:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 438 states have (on average 1.6963470319634704) internal successors, (743), 459 states have internal predecessors, (743), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 930 transitions. [2025-03-16 18:37:55,259 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 930 transitions. Word has length 60 [2025-03-16 18:37:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:55,259 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 930 transitions. [2025-03-16 18:37:55,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 930 transitions. [2025-03-16 18:37:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:37:55,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:55,262 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:55,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:37:55,262 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:55,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1815952881, now seen corresponding path program 1 times [2025-03-16 18:37:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:55,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869035969] [2025-03-16 18:37:55,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:55,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:55,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:37:55,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:37:55,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:55,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:55,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869035969] [2025-03-16 18:37:55,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869035969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:55,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:55,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232884711] [2025-03-16 18:37:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:55,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:55,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:55,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:55,393 INFO L87 Difference]: Start difference. First operand 560 states and 930 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:55,431 INFO L93 Difference]: Finished difference Result 1107 states and 1844 transitions. [2025-03-16 18:37:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2025-03-16 18:37:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:55,435 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:37:55,436 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:37:55,438 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 [2025-03-16 18:37:55,439 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 2 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:55,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2759 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:37:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-16 18:37:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 438 states have (on average 1.6940639269406392) internal successors, (742), 459 states have internal predecessors, (742), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 929 transitions. [2025-03-16 18:37:55,455 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 929 transitions. Word has length 61 [2025-03-16 18:37:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:55,456 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 929 transitions. [2025-03-16 18:37:55,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 929 transitions. [2025-03-16 18:37:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:37:55,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:55,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:55,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:37:55,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:55,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -579411069, now seen corresponding path program 1 times [2025-03-16 18:37:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900303282] [2025-03-16 18:37:55,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:55,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:37:55,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:37:55,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:55,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900303282] [2025-03-16 18:37:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900303282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:55,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791707287] [2025-03-16 18:37:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:55,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:55,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:55,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:55,562 INFO L87 Difference]: Start difference. First operand 560 states and 929 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:55,594 INFO L93 Difference]: Finished difference Result 1107 states and 1843 transitions. [2025-03-16 18:37:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2025-03-16 18:37:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:55,598 INFO L225 Difference]: With dead ends: 1107 [2025-03-16 18:37:55,598 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:37:55,600 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 [2025-03-16 18:37:55,601 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 1 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:55,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2759 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:37:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2025-03-16 18:37:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 928 transitions. [2025-03-16 18:37:55,617 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 928 transitions. Word has length 62 [2025-03-16 18:37:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:55,618 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 928 transitions. [2025-03-16 18:37:55,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 928 transitions. [2025-03-16 18:37:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:37:55,619 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:55,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:55,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:37:55,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:55,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2068568372, now seen corresponding path program 1 times [2025-03-16 18:37:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:55,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673397809] [2025-03-16 18:37:55,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:55,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:37:55,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:37:55,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:55,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673397809] [2025-03-16 18:37:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673397809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 18:37:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178158690] [2025-03-16 18:37:55,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:55,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:37:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:55,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:37:55,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:55,834 INFO L87 Difference]: Start difference. First operand 560 states and 928 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:55,947 INFO L93 Difference]: Finished difference Result 1073 states and 1775 transitions. [2025-03-16 18:37:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:37:55,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2025-03-16 18:37:55,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:55,953 INFO L225 Difference]: With dead ends: 1073 [2025-03-16 18:37:55,954 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:37:55,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:55,957 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 91 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7245 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:55,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7245 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:37:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2025-03-16 18:37:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 27 states have return successors, (94), 89 states have call predecessors, (94), 92 states have call successors, (94) [2025-03-16 18:37:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 947 transitions. [2025-03-16 18:37:55,984 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 947 transitions. Word has length 63 [2025-03-16 18:37:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:55,985 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 947 transitions. [2025-03-16 18:37:55,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 947 transitions. [2025-03-16 18:37:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:37:55,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:55,988 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:55,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:37:55,988 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:55,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1093208331, now seen corresponding path program 1 times [2025-03-16 18:37:55,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:55,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647741251] [2025-03-16 18:37:55,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:56,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:37:56,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:37:56,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:56,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:56,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647741251] [2025-03-16 18:37:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647741251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:56,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673297410] [2025-03-16 18:37:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:56,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:56,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:56,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:56,078 INFO L87 Difference]: Start difference. First operand 573 states and 947 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:56,112 INFO L93 Difference]: Finished difference Result 1125 states and 1869 transitions. [2025-03-16 18:37:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:37:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2025-03-16 18:37:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:56,117 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:37:56,117 INFO L226 Difference]: Without dead ends: 554 [2025-03-16 18:37:56,119 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 [2025-03-16 18:37:56,120 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 0 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:56,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2761 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2025-03-16 18:37:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2025-03-16 18:37:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 453 states have internal predecessors, (727), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 914 transitions. [2025-03-16 18:37:56,141 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 914 transitions. Word has length 63 [2025-03-16 18:37:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:56,142 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 914 transitions. [2025-03-16 18:37:56,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 914 transitions. [2025-03-16 18:37:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:37:56,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:56,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:56,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:37:56,144 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:56,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1432104251, now seen corresponding path program 1 times [2025-03-16 18:37:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167201146] [2025-03-16 18:37:56,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:56,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:37:56,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:37:56,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:56,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167201146] [2025-03-16 18:37:56,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167201146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:56,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:56,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176539078] [2025-03-16 18:37:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:56,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:56,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:56,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:56,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:56,278 INFO L87 Difference]: Start difference. First operand 554 states and 914 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:56,435 INFO L93 Difference]: Finished difference Result 1070 states and 1767 transitions. [2025-03-16 18:37:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:56,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2025-03-16 18:37:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:56,440 INFO L225 Difference]: With dead ends: 1070 [2025-03-16 18:37:56,440 INFO L226 Difference]: Without dead ends: 563 [2025-03-16 18:37:56,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:56,443 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 55 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:56,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4326 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-03-16 18:37:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2025-03-16 18:37:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 432 states have (on average 1.6736111111111112) internal successors, (723), 453 states have internal predecessors, (723), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 910 transitions. [2025-03-16 18:37:56,462 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 910 transitions. Word has length 64 [2025-03-16 18:37:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:56,463 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 910 transitions. [2025-03-16 18:37:56,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 910 transitions. [2025-03-16 18:37:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:37:56,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:56,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:56,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:37:56,465 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:56,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 926293341, now seen corresponding path program 1 times [2025-03-16 18:37:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55244542] [2025-03-16 18:37:56,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:56,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:37:56,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:37:56,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:56,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55244542] [2025-03-16 18:37:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55244542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:56,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:56,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685560376] [2025-03-16 18:37:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:56,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:56,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:56,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:56,566 INFO L87 Difference]: Start difference. First operand 554 states and 910 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:56,695 INFO L93 Difference]: Finished difference Result 1070 states and 1763 transitions. [2025-03-16 18:37:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:56,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2025-03-16 18:37:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:56,700 INFO L225 Difference]: With dead ends: 1070 [2025-03-16 18:37:56,700 INFO L226 Difference]: Without dead ends: 563 [2025-03-16 18:37:56,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:56,702 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 54 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:56,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4326 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-03-16 18:37:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2025-03-16 18:37:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 432 states have (on average 1.6643518518518519) internal successors, (719), 453 states have internal predecessors, (719), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 906 transitions. [2025-03-16 18:37:56,718 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 906 transitions. Word has length 65 [2025-03-16 18:37:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:56,718 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 906 transitions. [2025-03-16 18:37:56,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 906 transitions. [2025-03-16 18:37:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:37:56,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:56,720 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:56,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:37:56,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash -896005598, now seen corresponding path program 1 times [2025-03-16 18:37:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755657138] [2025-03-16 18:37:56,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:56,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:37:56,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:37:56,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:56,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755657138] [2025-03-16 18:37:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755657138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:56,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:56,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789408541] [2025-03-16 18:37:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:56,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:56,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:56,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:56,831 INFO L87 Difference]: Start difference. First operand 554 states and 906 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:56,952 INFO L93 Difference]: Finished difference Result 1070 states and 1759 transitions. [2025-03-16 18:37:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2025-03-16 18:37:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:56,957 INFO L225 Difference]: With dead ends: 1070 [2025-03-16 18:37:56,957 INFO L226 Difference]: Without dead ends: 563 [2025-03-16 18:37:56,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:56,959 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 53 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4308 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:56,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4308 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-03-16 18:37:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2025-03-16 18:37:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 432 states have (on average 1.6550925925925926) internal successors, (715), 453 states have internal predecessors, (715), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 902 transitions. [2025-03-16 18:37:56,977 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 902 transitions. Word has length 66 [2025-03-16 18:37:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:56,977 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 902 transitions. [2025-03-16 18:37:56,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 902 transitions. [2025-03-16 18:37:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:37:56,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:56,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:56,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:37:56,979 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:56,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash 987098003, now seen corresponding path program 1 times [2025-03-16 18:37:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027133099] [2025-03-16 18:37:56,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:56,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:56,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:37:56,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:37:56,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:56,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027133099] [2025-03-16 18:37:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027133099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:37:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078153491] [2025-03-16 18:37:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:57,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:37:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:57,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:37:57,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:57,088 INFO L87 Difference]: Start difference. First operand 554 states and 902 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:57,138 INFO L93 Difference]: Finished difference Result 1061 states and 1741 transitions. [2025-03-16 18:37:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:37:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2025-03-16 18:37:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:57,142 INFO L225 Difference]: With dead ends: 1061 [2025-03-16 18:37:57,142 INFO L226 Difference]: Without dead ends: 533 [2025-03-16 18:37:57,144 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 [2025-03-16 18:37:57,145 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 84 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:57,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5273 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-16 18:37:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-03-16 18:37:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 411 states have (on average 1.6569343065693432) internal successors, (681), 432 states have internal predecessors, (681), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 868 transitions. [2025-03-16 18:37:57,159 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 868 transitions. Word has length 66 [2025-03-16 18:37:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:57,160 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 868 transitions. [2025-03-16 18:37:57,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 868 transitions. [2025-03-16 18:37:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:37:57,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:57,161 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:57,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:37:57,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:57,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 824089178, now seen corresponding path program 1 times [2025-03-16 18:37:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187297569] [2025-03-16 18:37:57,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:57,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:37:57,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:37:57,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:57,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:57,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187297569] [2025-03-16 18:37:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187297569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029511088] [2025-03-16 18:37:57,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:57,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:57,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:57,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:57,257 INFO L87 Difference]: Start difference. First operand 533 states and 868 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:57,311 INFO L93 Difference]: Finished difference Result 1040 states and 1707 transitions. [2025-03-16 18:37:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2025-03-16 18:37:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:57,315 INFO L225 Difference]: With dead ends: 1040 [2025-03-16 18:37:57,316 INFO L226 Difference]: Without dead ends: 533 [2025-03-16 18:37:57,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:57,318 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 17 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:57,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4246 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-16 18:37:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-03-16 18:37:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 411 states have (on average 1.6545012165450121) internal successors, (680), 432 states have internal predecessors, (680), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 867 transitions. [2025-03-16 18:37:57,332 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 867 transitions. Word has length 67 [2025-03-16 18:37:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:57,332 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 867 transitions. [2025-03-16 18:37:57,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 867 transitions. [2025-03-16 18:37:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:37:57,333 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:57,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:57,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:37:57,333 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:57,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash 689239423, now seen corresponding path program 1 times [2025-03-16 18:37:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912106839] [2025-03-16 18:37:57,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:57,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:37:57,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:37:57,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:57,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912106839] [2025-03-16 18:37:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912106839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:57,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:57,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780174599] [2025-03-16 18:37:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:57,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:57,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:57,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:57,414 INFO L87 Difference]: Start difference. First operand 533 states and 867 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:57,466 INFO L93 Difference]: Finished difference Result 1040 states and 1706 transitions. [2025-03-16 18:37:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-16 18:37:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:57,470 INFO L225 Difference]: With dead ends: 1040 [2025-03-16 18:37:57,471 INFO L226 Difference]: Without dead ends: 533 [2025-03-16 18:37:57,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:37:57,473 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 16 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:57,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4246 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-16 18:37:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-03-16 18:37:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 411 states have (on average 1.6520681265206814) internal successors, (679), 432 states have internal predecessors, (679), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 866 transitions. [2025-03-16 18:37:57,486 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 866 transitions. Word has length 68 [2025-03-16 18:37:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:57,487 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 866 transitions. [2025-03-16 18:37:57,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:37:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 866 transitions. [2025-03-16 18:37:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 18:37:57,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:57,488 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:57,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:37:57,488 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:57,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1114315945, now seen corresponding path program 1 times [2025-03-16 18:37:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398209740] [2025-03-16 18:37:57,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:57,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 18:37:57,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 18:37:57,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:57,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398209740] [2025-03-16 18:37:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398209740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:57,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:57,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:37:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620734107] [2025-03-16 18:37:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:57,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:37:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:57,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:37:57,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:57,654 INFO L87 Difference]: Start difference. First operand 533 states and 866 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:57,740 INFO L93 Difference]: Finished difference Result 1034 states and 1694 transitions. [2025-03-16 18:37:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:37:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-03-16 18:37:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:57,744 INFO L225 Difference]: With dead ends: 1034 [2025-03-16 18:37:57,744 INFO L226 Difference]: Without dead ends: 533 [2025-03-16 18:37:57,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:57,747 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 6 mSDsluCounter, 6778 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7628 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:57,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7628 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-16 18:37:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-03-16 18:37:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 411 states have (on average 1.6496350364963503) internal successors, (678), 432 states have internal predecessors, (678), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:37:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 865 transitions. [2025-03-16 18:37:57,765 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 865 transitions. Word has length 69 [2025-03-16 18:37:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:57,765 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 865 transitions. [2025-03-16 18:37:57,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:37:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 865 transitions. [2025-03-16 18:37:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 18:37:57,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:57,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:57,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:37:57,766 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:57,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1454687916, now seen corresponding path program 1 times [2025-03-16 18:37:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:57,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087456271] [2025-03-16 18:37:57,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:57,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 18:37:57,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 18:37:57,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:57,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:37:57,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:57,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087456271] [2025-03-16 18:37:57,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087456271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:57,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:57,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409910557] [2025-03-16 18:37:57,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:57,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:57,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:57,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:57,989 INFO L87 Difference]: Start difference. First operand 533 states and 865 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-03-16 18:37:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:59,823 INFO L93 Difference]: Finished difference Result 1655 states and 2741 transitions. [2025-03-16 18:37:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:37:59,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 70 [2025-03-16 18:37:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:59,831 INFO L225 Difference]: With dead ends: 1655 [2025-03-16 18:37:59,831 INFO L226 Difference]: Without dead ends: 1162 [2025-03-16 18:37:59,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:37:59,833 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 1990 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:59,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 1220 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:37:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2025-03-16 18:37:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1030. [2025-03-16 18:37:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 803 states have (on average 1.6662515566625156) internal successors, (1338), 833 states have internal predecessors, (1338), 179 states have call successors, (179), 46 states have call predecessors, (179), 47 states have return successors, (181), 163 states have call predecessors, (181), 174 states have call successors, (181) [2025-03-16 18:37:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1698 transitions. [2025-03-16 18:37:59,882 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1698 transitions. Word has length 70 [2025-03-16 18:37:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:59,882 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1698 transitions. [2025-03-16 18:37:59,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-03-16 18:37:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1698 transitions. [2025-03-16 18:37:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-16 18:37:59,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:59,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:59,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:37:59,888 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:59,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -746993135, now seen corresponding path program 1 times [2025-03-16 18:37:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183254643] [2025-03-16 18:37:59,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:59,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:37:59,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:37:59,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:59,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:38:00,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:00,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183254643] [2025-03-16 18:38:00,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183254643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:00,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:00,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:38:00,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288884702] [2025-03-16 18:38:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:00,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:38:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:00,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:38:00,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:38:00,220 INFO L87 Difference]: Start difference. First operand 1030 states and 1698 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:38:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:01,635 INFO L93 Difference]: Finished difference Result 2028 states and 3403 transitions. [2025-03-16 18:38:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:38:01,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2025-03-16 18:38:01,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:01,642 INFO L225 Difference]: With dead ends: 2028 [2025-03-16 18:38:01,642 INFO L226 Difference]: Without dead ends: 1038 [2025-03-16 18:38:01,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:38:01,649 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1327 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:01,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1523 Invalid, 3207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:38:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2025-03-16 18:38:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2025-03-16 18:38:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 809 states have (on average 1.661310259579728) internal successors, (1344), 839 states have internal predecessors, (1344), 179 states have call successors, (179), 46 states have call predecessors, (179), 49 states have return successors, (213), 165 states have call predecessors, (213), 174 states have call successors, (213) [2025-03-16 18:38:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1736 transitions. [2025-03-16 18:38:01,731 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1736 transitions. Word has length 109 [2025-03-16 18:38:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:01,732 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1736 transitions. [2025-03-16 18:38:01,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:38:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1736 transitions. [2025-03-16 18:38:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-16 18:38:01,735 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:01,736 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:38:01,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:38:01,736 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:01,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash -189199517, now seen corresponding path program 1 times [2025-03-16 18:38:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691727785] [2025-03-16 18:38:01,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:01,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-16 18:38:01,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-16 18:38:01,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:01,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:38:01,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:01,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691727785] [2025-03-16 18:38:01,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691727785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:01,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:01,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:38:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373050675] [2025-03-16 18:38:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:01,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:38:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:01,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:38:01,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:38:01,923 INFO L87 Difference]: Start difference. First operand 1038 states and 1736 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:38:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:04,871 INFO L93 Difference]: Finished difference Result 3822 states and 6555 transitions. [2025-03-16 18:38:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:38:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 110 [2025-03-16 18:38:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:04,890 INFO L225 Difference]: With dead ends: 3822 [2025-03-16 18:38:04,890 INFO L226 Difference]: Without dead ends: 2824 [2025-03-16 18:38:04,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:38:04,898 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 2435 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 5677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:04,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 2339 Invalid, 5677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-16 18:38:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2025-03-16 18:38:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2702. [2025-03-16 18:38:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2096 states have (on average 1.6526717557251909) internal successors, (3464), 2176 states have internal predecessors, (3464), 470 states have call successors, (470), 125 states have call predecessors, (470), 135 states have return successors, (545), 435 states have call predecessors, (545), 465 states have call successors, (545) [2025-03-16 18:38:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4479 transitions. [2025-03-16 18:38:05,026 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4479 transitions. Word has length 110 [2025-03-16 18:38:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:05,026 INFO L471 AbstractCegarLoop]: Abstraction has 2702 states and 4479 transitions. [2025-03-16 18:38:05,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:38:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4479 transitions. [2025-03-16 18:38:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:38:05,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:05,030 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:38:05,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:38:05,030 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:05,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 981865168, now seen corresponding path program 1 times [2025-03-16 18:38:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:05,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710675716] [2025-03-16 18:38:05,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:05,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:05,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:38:05,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:38:05,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:05,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:38:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710675716] [2025-03-16 18:38:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710675716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:05,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:38:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86646180] [2025-03-16 18:38:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:05,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:38:05,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:05,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:38:05,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:38:05,198 INFO L87 Difference]: Start difference. First operand 2702 states and 4479 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:07,440 INFO L93 Difference]: Finished difference Result 7748 states and 13077 transitions. [2025-03-16 18:38:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:38:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 112 [2025-03-16 18:38:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:07,468 INFO L225 Difference]: With dead ends: 7748 [2025-03-16 18:38:07,468 INFO L226 Difference]: Without dead ends: 5088 [2025-03-16 18:38:07,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:38:07,504 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 3400 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 1037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 4530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1037 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:07,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 1998 Invalid, 4530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1037 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 18:38:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2025-03-16 18:38:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 4534. [2025-03-16 18:38:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3384 states have (on average 1.635047281323877) internal successors, (5533), 3566 states have internal predecessors, (5533), 926 states have call successors, (926), 194 states have call predecessors, (926), 223 states have return successors, (1107), 893 states have call predecessors, (1107), 921 states have call successors, (1107) [2025-03-16 18:38:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 7566 transitions. [2025-03-16 18:38:07,719 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 7566 transitions. Word has length 112 [2025-03-16 18:38:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:07,721 INFO L471 AbstractCegarLoop]: Abstraction has 4534 states and 7566 transitions. [2025-03-16 18:38:07,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 7566 transitions. [2025-03-16 18:38:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:38:07,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:07,725 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:38:07,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:38:07,725 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:07,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1931153170, now seen corresponding path program 1 times [2025-03-16 18:38:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429424698] [2025-03-16 18:38:07,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:07,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:38:07,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:38:07,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:07,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:38:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:07,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429424698] [2025-03-16 18:38:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429424698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:38:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027850974] [2025-03-16 18:38:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:07,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:38:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:07,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:38:07,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:38:07,984 INFO L87 Difference]: Start difference. First operand 4534 states and 7566 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2025-03-16 18:38:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:11,013 INFO L93 Difference]: Finished difference Result 12812 states and 21320 transitions. [2025-03-16 18:38:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:38:11,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 112 [2025-03-16 18:38:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:11,059 INFO L225 Difference]: With dead ends: 12812 [2025-03-16 18:38:11,059 INFO L226 Difference]: Without dead ends: 8318 [2025-03-16 18:38:11,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2025-03-16 18:38:11,081 INFO L435 NwaCegarLoop]: 582 mSDtfsCounter, 1954 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 8581 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 8925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 8581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:11,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 3450 Invalid, 8925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 8581 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-16 18:38:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2025-03-16 18:38:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 8091. [2025-03-16 18:38:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 5963 states have (on average 1.6033875565990274) internal successors, (9561), 6281 states have internal predecessors, (9561), 1724 states have call successors, (1724), 347 states have call predecessors, (1724), 403 states have return successors, (2073), 1660 states have call predecessors, (2073), 1719 states have call successors, (2073) [2025-03-16 18:38:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 13358 transitions. [2025-03-16 18:38:11,477 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 13358 transitions. Word has length 112 [2025-03-16 18:38:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:11,478 INFO L471 AbstractCegarLoop]: Abstraction has 8091 states and 13358 transitions. [2025-03-16 18:38:11,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2025-03-16 18:38:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 13358 transitions. [2025-03-16 18:38:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-16 18:38:11,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:11,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:38:11,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:38:11,482 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:11,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1248868353, now seen corresponding path program 1 times [2025-03-16 18:38:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:11,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553907698] [2025-03-16 18:38:11,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:11,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:38:11,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:38:11,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:11,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:38:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553907698] [2025-03-16 18:38:11,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553907698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:11,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:38:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149947327] [2025-03-16 18:38:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:11,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:38:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:11,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:38:11,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:38:11,622 INFO L87 Difference]: Start difference. First operand 8091 states and 13358 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:14,330 INFO L93 Difference]: Finished difference Result 26203 states and 44601 transitions. [2025-03-16 18:38:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:38:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 113 [2025-03-16 18:38:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:14,432 INFO L225 Difference]: With dead ends: 26203 [2025-03-16 18:38:14,433 INFO L226 Difference]: Without dead ends: 18155 [2025-03-16 18:38:14,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:38:14,466 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 3413 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 4519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:14,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3447 Valid, 2011 Invalid, 4519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:38:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18155 states. [2025-03-16 18:38:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18155 to 16454. [2025-03-16 18:38:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16454 states, 11455 states have (on average 1.5791357485814055) internal successors, (18089), 12267 states have internal predecessors, (18089), 4242 states have call successors, (4242), 587 states have call predecessors, (4242), 756 states have return successors, (5290), 4224 states have call predecessors, (5290), 4237 states have call successors, (5290) [2025-03-16 18:38:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16454 states to 16454 states and 27621 transitions. [2025-03-16 18:38:15,637 INFO L78 Accepts]: Start accepts. Automaton has 16454 states and 27621 transitions. Word has length 113 [2025-03-16 18:38:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:15,639 INFO L471 AbstractCegarLoop]: Abstraction has 16454 states and 27621 transitions. [2025-03-16 18:38:15,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 16454 states and 27621 transitions. [2025-03-16 18:38:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:38:15,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:15,644 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:38:15,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 18:38:15,644 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:15,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1396494677, now seen corresponding path program 1 times [2025-03-16 18:38:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413057460] [2025-03-16 18:38:15,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:15,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:38:15,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:38:15,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:15,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:38:15,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:15,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413057460] [2025-03-16 18:38:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413057460] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:38:15,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226288461] [2025-03-16 18:38:15,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:15,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:38:15,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:15,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:38:15,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:38:15,817 INFO L87 Difference]: Start difference. First operand 16454 states and 27621 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:20,167 INFO L93 Difference]: Finished difference Result 61256 states and 106697 transitions. [2025-03-16 18:38:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:38:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 114 [2025-03-16 18:38:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:20,495 INFO L225 Difference]: With dead ends: 61256 [2025-03-16 18:38:20,495 INFO L226 Difference]: Without dead ends: 44847 [2025-03-16 18:38:20,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:38:20,590 INFO L435 NwaCegarLoop]: 827 mSDtfsCounter, 3425 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 1061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 4528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1061 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:20,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3460 Valid, 2032 Invalid, 4528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1061 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 18:38:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44847 states. [2025-03-16 18:38:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44847 to 40573. [2025-03-16 18:38:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40573 states, 26456 states have (on average 1.5565467190807378) internal successors, (41180), 28777 states have internal predecessors, (41180), 12456 states have call successors, (12456), 1067 states have call predecessors, (12456), 1660 states have return successors, (16379), 12722 states have call predecessors, (16379), 12451 states have call successors, (16379) [2025-03-16 18:38:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40573 states to 40573 states and 70015 transitions. [2025-03-16 18:38:23,871 INFO L78 Accepts]: Start accepts. Automaton has 40573 states and 70015 transitions. Word has length 114 [2025-03-16 18:38:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:38:23,872 INFO L471 AbstractCegarLoop]: Abstraction has 40573 states and 70015 transitions. [2025-03-16 18:38:23,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40573 states and 70015 transitions. [2025-03-16 18:38:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:38:23,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:38:23,875 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:38:23,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:38:23,875 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:38:23,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:38:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash 164070140, now seen corresponding path program 1 times [2025-03-16 18:38:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:38:23,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036740439] [2025-03-16 18:38:23,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:38:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:38:23,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:38:23,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:38:23,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:38:23,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:38:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:38:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:38:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036740439] [2025-03-16 18:38:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036740439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:38:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:38:24,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:38:24,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202154561] [2025-03-16 18:38:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:38:24,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:38:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:38:24,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:38:24,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:38:24,005 INFO L87 Difference]: Start difference. First operand 40573 states and 70015 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-16 18:38:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:38:34,697 INFO L93 Difference]: Finished difference Result 169107 states and 302878 transitions. [2025-03-16 18:38:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:38:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 115 [2025-03-16 18:38:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:38:35,578 INFO L225 Difference]: With dead ends: 169107 [2025-03-16 18:38:35,578 INFO L226 Difference]: Without dead ends: 128583 [2025-03-16 18:38:35,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:38:35,796 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 3437 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3473 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:38:35,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3473 Valid, 2053 Invalid, 4539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:38:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128583 states.