./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product01.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_spec2_product01.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 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:34:00,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:34:00,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:34:00,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:34:00,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:34:00,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:34:00,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:34:00,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:34:00,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:34:00,158 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:34:00,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:34:00,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:34:00,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:34:00,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:34:00,159 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:34:00,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:34:00,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:34:00,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:34:00,160 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 -> 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af [2025-03-16 18:34:00,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:34:00,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:34:00,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:34:00,366 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:34:00,366 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:34:00,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2025-03-16 18:34:01,480 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e9842a/d5f313371290494aa1f1d901057c0c96/FLAG60db8f37b [2025-03-16 18:34:01,779 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:34:01,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2025-03-16 18:34:01,798 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e9842a/d5f313371290494aa1f1d901057c0c96/FLAG60db8f37b [2025-03-16 18:34:02,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e9842a/d5f313371290494aa1f1d901057c0c96 [2025-03-16 18:34:02,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:34:02,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:34:02,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:34:02,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:34:02,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:34:02,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2488f941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02, skipping insertion in model container [2025-03-16 18:34:02,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:34:02,202 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2025-03-16 18:34:02,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:34:02,460 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:34:02,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-16 18:34:02,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [57] [2025-03-16 18:34:02,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [178] [2025-03-16 18:34:02,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [192] [2025-03-16 18:34:02,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [375] [2025-03-16 18:34:02,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [741] [2025-03-16 18:34:02,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1101] [2025-03-16 18:34:02,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2529] [2025-03-16 18:34:02,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2620] [2025-03-16 18:34:02,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2655] [2025-03-16 18:34:02,475 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2025-03-16 18:34:02,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:34:02,579 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:34:02,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02 WrapperNode [2025-03-16 18:34:02,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:34:02,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:34:02,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:34:02,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:34:02,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,644 INFO L138 Inliner]: procedures = 88, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 750 [2025-03-16 18:34:02,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:34:02,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:34:02,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:34:02,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:34:02,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,681 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 18:34:02,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,697 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:34:02,718 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:34:02,718 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:34:02,718 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:34:02,719 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (1/1) ... [2025-03-16 18:34:02,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:34:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:02,745 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 18:34:02,747 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 18:34:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:34:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:34:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:34:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:34:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:34:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:34:02,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:34:02,763 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:34:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:34:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:34:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:34:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:34:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:34:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:34:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:34:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:34:02,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:34:02,764 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:34:02,765 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:34:02,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:34:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:34:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:34:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:34:02,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:34:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:34:02,768 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:34:02,768 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:34:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:34:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:34:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:34:02,769 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:34:02,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:34:02,916 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:34:02,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:34:02,972 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L175: #res := ~retValue_acc~2; [2025-03-16 18:34:02,976 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1180: #res := ~retValue_acc~8; [2025-03-16 18:34:03,243 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1850: #res := ~retValue_acc~16; [2025-03-16 18:34:03,292 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1954: #res := ~retValue_acc~19; [2025-03-16 18:34:03,301 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L136: #res := ~retValue_acc~1; [2025-03-16 18:34:03,452 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1940-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~18#1; [2025-03-16 18:34:03,452 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1313-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~9#1; [2025-03-16 18:34:03,452 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1356-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~11#1; [2025-03-16 18:34:03,498 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1485-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~14#1; [2025-03-16 18:34:03,498 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1498-1: isIdle_#res#1 := isIdle_~retValue_acc~15#1; [2025-03-16 18:34:03,581 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3002: #res := ~retValue_acc~24; [2025-03-16 18:34:03,632 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2652-1: valid_product_#res#1 := valid_product_~retValue_acc~22#1; [2025-03-16 18:34:03,632 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1098-1: main_#res#1 := main_~retValue_acc~7#1; [2025-03-16 18:34:03,642 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: #res := ~retValue_acc~23; [2025-03-16 18:34:03,643 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1322: #res := ~retValue_acc~10; [2025-03-16 18:34:03,647 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3313: #res := ~retValue_acc~25; [2025-03-16 18:34:03,736 INFO L? ?]: Removed 409 outVars from TransFormulas that were not future-live. [2025-03-16 18:34:03,736 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:34:03,758 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:34:03,762 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:34:03,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:34:03 BoogieIcfgContainer [2025-03-16 18:34:03,762 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:34:03,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:34:03,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:34:03,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:34:03,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:34:02" (1/3) ... [2025-03-16 18:34:03,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14134109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:34:03, skipping insertion in model container [2025-03-16 18:34:03,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:02" (2/3) ... [2025-03-16 18:34:03,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14134109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:34:03, skipping insertion in model container [2025-03-16 18:34:03,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:34:03" (3/3) ... [2025-03-16 18:34:03,770 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product01.cil.c [2025-03-16 18:34:03,780 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:34:03,782 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product01.cil.c that has 21 procedures, 509 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:34:03,840 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:34:03,849 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;@138c68e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:34:03,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:34:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 509 states, 401 states have (on average 1.7281795511221945) internal successors, (693), 422 states have internal predecessors, (693), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2025-03-16 18:34:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 18:34:03,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:03,873 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 18:34:03,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:03,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1824555959, now seen corresponding path program 1 times [2025-03-16 18:34:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849695371] [2025-03-16 18:34:03,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:03,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 18:34:04,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 18:34:04,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:04,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:04,277 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 18:34:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849695371] [2025-03-16 18:34:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849695371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:04,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719781063] [2025-03-16 18:34:04,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:04,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:04,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:04,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:04,302 INFO L87 Difference]: Start difference. First operand has 509 states, 401 states have (on average 1.7281795511221945) internal successors, (693), 422 states have internal predecessors, (693), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 18:34:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:04,422 INFO L93 Difference]: Finished difference Result 1003 states and 1710 transitions. [2025-03-16 18:34:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:04,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 69 [2025-03-16 18:34:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:04,434 INFO L225 Difference]: With dead ends: 1003 [2025-03-16 18:34:04,434 INFO L226 Difference]: Without dead ends: 502 [2025-03-16 18:34:04,440 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 18:34:04,442 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 5 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2531 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 18:34:04,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2531 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-03-16 18:34:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-03-16 18:34:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 396 states have (on average 1.7247474747474747) internal successors, (683), 415 states have internal predecessors, (683), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 850 transitions. [2025-03-16 18:34:04,504 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 850 transitions. Word has length 69 [2025-03-16 18:34:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:04,505 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 850 transitions. [2025-03-16 18:34:04,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 18:34:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 850 transitions. [2025-03-16 18:34:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:34:04,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:04,511 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:04,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:34:04,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:04,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1800680085, now seen corresponding path program 1 times [2025-03-16 18:34:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201451697] [2025-03-16 18:34:04,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:04,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:34:04,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:34:04,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:04,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:04,675 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 18:34:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201451697] [2025-03-16 18:34:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201451697] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:04,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:04,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380232729] [2025-03-16 18:34:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:04,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:04,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:04,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:04,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:04,676 INFO L87 Difference]: Start difference. First operand 502 states and 850 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 18:34:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:04,744 INFO L93 Difference]: Finished difference Result 991 states and 1682 transitions. [2025-03-16 18:34:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 71 [2025-03-16 18:34:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:04,751 INFO L225 Difference]: With dead ends: 991 [2025-03-16 18:34:04,751 INFO L226 Difference]: Without dead ends: 502 [2025-03-16 18:34:04,754 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 18:34:04,754 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 4 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2513 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 18:34:04,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2513 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-03-16 18:34:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-03-16 18:34:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 396 states have (on average 1.7222222222222223) internal successors, (682), 415 states have internal predecessors, (682), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 849 transitions. [2025-03-16 18:34:04,786 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 849 transitions. Word has length 71 [2025-03-16 18:34:04,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:04,787 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 849 transitions. [2025-03-16 18:34:04,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 18:34:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 849 transitions. [2025-03-16 18:34:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 18:34:04,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:04,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:04,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:34:04,791 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:04,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 805076863, now seen corresponding path program 1 times [2025-03-16 18:34:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151696944] [2025-03-16 18:34:04,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:04,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:04,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 18:34:04,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 18:34:04,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:04,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:04,930 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 18:34:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151696944] [2025-03-16 18:34:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151696944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678370583] [2025-03-16 18:34:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:04,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:04,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:04,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:04,931 INFO L87 Difference]: Start difference. First operand 502 states and 849 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (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 18:34:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:04,982 INFO L93 Difference]: Finished difference Result 991 states and 1681 transitions. [2025-03-16 18:34:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:04,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (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 72 [2025-03-16 18:34:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:04,986 INFO L225 Difference]: With dead ends: 991 [2025-03-16 18:34:04,986 INFO L226 Difference]: Without dead ends: 502 [2025-03-16 18:34:04,988 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 18:34:04,990 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 3 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2513 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 18:34:04,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2513 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-03-16 18:34:05,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-03-16 18:34:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 396 states have (on average 1.7196969696969697) internal successors, (681), 415 states have internal predecessors, (681), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 848 transitions. [2025-03-16 18:34:05,012 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 848 transitions. Word has length 72 [2025-03-16 18:34:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:05,012 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 848 transitions. [2025-03-16 18:34:05,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (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 18:34:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 848 transitions. [2025-03-16 18:34:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-16 18:34:05,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:05,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:05,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:34:05,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:05,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -148157352, now seen corresponding path program 1 times [2025-03-16 18:34:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177225456] [2025-03-16 18:34:05,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:05,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-16 18:34:05,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-16 18:34:05,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:05,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:05,128 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 18:34:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177225456] [2025-03-16 18:34:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177225456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:05,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361443661] [2025-03-16 18:34:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:05,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:05,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:05,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:05,131 INFO L87 Difference]: Start difference. First operand 502 states and 848 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 18:34:05,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:05,176 INFO L93 Difference]: Finished difference Result 991 states and 1680 transitions. [2025-03-16 18:34:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:05,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 73 [2025-03-16 18:34:05,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:05,179 INFO L225 Difference]: With dead ends: 991 [2025-03-16 18:34:05,183 INFO L226 Difference]: Without dead ends: 502 [2025-03-16 18:34:05,185 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 18:34:05,186 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 2 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2513 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 18:34:05,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2513 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-03-16 18:34:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-03-16 18:34:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 415 states have internal predecessors, (680), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 847 transitions. [2025-03-16 18:34:05,205 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 847 transitions. Word has length 73 [2025-03-16 18:34:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:05,205 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 847 transitions. [2025-03-16 18:34:05,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 18:34:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 847 transitions. [2025-03-16 18:34:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 18:34:05,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:05,208 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:05,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:34:05,208 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:05,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 212047650, now seen corresponding path program 1 times [2025-03-16 18:34:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817103577] [2025-03-16 18:34:05,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:05,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 18:34:05,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 18:34:05,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:05,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:05,346 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 18:34:05,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817103577] [2025-03-16 18:34:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817103577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065195587] [2025-03-16 18:34:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:05,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:05,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:05,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:05,347 INFO L87 Difference]: Start difference. First operand 502 states and 847 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 18:34:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:05,384 INFO L93 Difference]: Finished difference Result 991 states and 1679 transitions. [2025-03-16 18:34:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:05,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 74 [2025-03-16 18:34:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:05,388 INFO L225 Difference]: With dead ends: 991 [2025-03-16 18:34:05,389 INFO L226 Difference]: Without dead ends: 502 [2025-03-16 18:34:05,390 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 18:34:05,391 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 1 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2513 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 18:34:05,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2513 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-03-16 18:34:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-03-16 18:34:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 396 states have (on average 1.7146464646464648) internal successors, (679), 415 states have internal predecessors, (679), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 846 transitions. [2025-03-16 18:34:05,409 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 846 transitions. Word has length 74 [2025-03-16 18:34:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:05,409 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 846 transitions. [2025-03-16 18:34:05,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 18:34:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 846 transitions. [2025-03-16 18:34:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 18:34:05,411 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:05,411 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] [2025-03-16 18:34:05,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:34:05,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:05,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1660804581, now seen corresponding path program 1 times [2025-03-16 18:34:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146126445] [2025-03-16 18:34:05,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:05,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:34:05,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:34:05,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:05,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:05,570 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 18:34:05,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:05,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146126445] [2025-03-16 18:34:05,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146126445] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:05,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:05,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675262706] [2025-03-16 18:34:05,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:05,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:05,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:05,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:05,572 INFO L87 Difference]: Start difference. First operand 502 states and 846 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:34:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:05,668 INFO L93 Difference]: Finished difference Result 957 states and 1611 transitions. [2025-03-16 18:34:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:34:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 75 [2025-03-16 18:34:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:05,673 INFO L225 Difference]: With dead ends: 957 [2025-03-16 18:34:05,673 INFO L226 Difference]: Without dead ends: 517 [2025-03-16 18:34:05,675 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 18:34:05,676 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 91 mSDsluCounter, 4099 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:05,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4935 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2025-03-16 18:34:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 515. [2025-03-16 18:34:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 406 states have (on average 1.70935960591133) internal successors, (694), 427 states have internal predecessors, (694), 87 states have call successors, (87), 20 states have call predecessors, (87), 21 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2025-03-16 18:34:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 865 transitions. [2025-03-16 18:34:05,701 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 865 transitions. Word has length 75 [2025-03-16 18:34:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:05,701 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 865 transitions. [2025-03-16 18:34:05,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 18:34:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 865 transitions. [2025-03-16 18:34:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 18:34:05,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:05,704 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] [2025-03-16 18:34:05,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:34:05,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:05,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1869502884, now seen corresponding path program 1 times [2025-03-16 18:34:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:05,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826012506] [2025-03-16 18:34:05,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:05,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:34:05,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:34:05,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:05,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:05,788 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 18:34:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826012506] [2025-03-16 18:34:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826012506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:05,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:05,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495543510] [2025-03-16 18:34:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:05,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:05,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:05,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:05,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:05,791 INFO L87 Difference]: Start difference. First operand 515 states and 865 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 18:34:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:05,828 INFO L93 Difference]: Finished difference Result 1009 states and 1705 transitions. [2025-03-16 18:34:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 75 [2025-03-16 18:34:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:05,832 INFO L225 Difference]: With dead ends: 1009 [2025-03-16 18:34:05,832 INFO L226 Difference]: Without dead ends: 496 [2025-03-16 18:34:05,833 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 18:34:05,834 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 0 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2515 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 18:34:05,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2025-03-16 18:34:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2025-03-16 18:34:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 390 states have (on average 1.705128205128205) internal successors, (665), 409 states have internal predecessors, (665), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 832 transitions. [2025-03-16 18:34:05,848 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 832 transitions. Word has length 75 [2025-03-16 18:34:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:05,848 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 832 transitions. [2025-03-16 18:34:05,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 18:34:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 832 transitions. [2025-03-16 18:34:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-16 18:34:05,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:05,850 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] [2025-03-16 18:34:05,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:34:05,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:05,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1697398137, now seen corresponding path program 1 times [2025-03-16 18:34:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:05,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822670467] [2025-03-16 18:34:05,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:05,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:05,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 18:34:05,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 18:34:05,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:05,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:05,938 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 18:34:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822670467] [2025-03-16 18:34:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822670467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:05,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558035609] [2025-03-16 18:34:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:05,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:05,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:05,940 INFO L87 Difference]: Start difference. First operand 496 states and 832 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 18:34:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:06,079 INFO L93 Difference]: Finished difference Result 954 states and 1603 transitions. [2025-03-16 18:34:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 76 [2025-03-16 18:34:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:06,083 INFO L225 Difference]: With dead ends: 954 [2025-03-16 18:34:06,083 INFO L226 Difference]: Without dead ends: 505 [2025-03-16 18:34:06,084 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 18:34:06,085 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 55 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3916 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 18:34:06,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3916 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2025-03-16 18:34:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 496. [2025-03-16 18:34:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 390 states have (on average 1.6948717948717948) internal successors, (661), 409 states have internal predecessors, (661), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 828 transitions. [2025-03-16 18:34:06,106 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 828 transitions. Word has length 76 [2025-03-16 18:34:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,107 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 828 transitions. [2025-03-16 18:34:06,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 18:34:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2025-03-16 18:34:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 18:34:06,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,108 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] [2025-03-16 18:34:06,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:34:06,109 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1196327900, now seen corresponding path program 1 times [2025-03-16 18:34:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029343478] [2025-03-16 18:34:06,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 18:34:06,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 18:34:06,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,193 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 18:34:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029343478] [2025-03-16 18:34:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029343478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033353644] [2025-03-16 18:34:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:06,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:06,195 INFO L87 Difference]: Start difference. First operand 496 states and 828 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 18:34:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:06,323 INFO L93 Difference]: Finished difference Result 954 states and 1599 transitions. [2025-03-16 18:34:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 77 [2025-03-16 18:34:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:06,327 INFO L225 Difference]: With dead ends: 954 [2025-03-16 18:34:06,327 INFO L226 Difference]: Without dead ends: 505 [2025-03-16 18:34:06,329 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 18:34:06,329 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 54 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3898 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 18:34:06,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3898 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2025-03-16 18:34:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 496. [2025-03-16 18:34:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 390 states have (on average 1.6846153846153846) internal successors, (657), 409 states have internal predecessors, (657), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 824 transitions. [2025-03-16 18:34:06,343 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 824 transitions. Word has length 77 [2025-03-16 18:34:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,343 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 824 transitions. [2025-03-16 18:34:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 18:34:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 824 transitions. [2025-03-16 18:34:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-16 18:34:06,345 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,345 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] [2025-03-16 18:34:06,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:34:06,345 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2044950261, now seen corresponding path program 1 times [2025-03-16 18:34:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058829863] [2025-03-16 18:34:06,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 18:34:06,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 18:34:06,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,440 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 18:34:06,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058829863] [2025-03-16 18:34:06,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058829863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:06,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573461589] [2025-03-16 18:34:06,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:06,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:06,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:06,442 INFO L87 Difference]: Start difference. First operand 496 states and 824 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 18:34:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:06,508 INFO L93 Difference]: Finished difference Result 945 states and 1581 transitions. [2025-03-16 18:34:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:34:06,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 78 [2025-03-16 18:34:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:06,511 INFO L225 Difference]: With dead ends: 945 [2025-03-16 18:34:06,511 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 18:34:06,513 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 18:34:06,513 INFO L435 NwaCegarLoop]: 813 mSDtfsCounter, 91 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 4798 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 18:34:06,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 4798 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 18:34:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 18:34:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.6802168021680217) internal successors, (620), 388 states have internal predecessors, (620), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 787 transitions. [2025-03-16 18:34:06,527 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 787 transitions. Word has length 78 [2025-03-16 18:34:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,527 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 787 transitions. [2025-03-16 18:34:06,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 18:34:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 787 transitions. [2025-03-16 18:34:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-16 18:34:06,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,529 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] [2025-03-16 18:34:06,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:34:06,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 211367684, now seen corresponding path program 1 times [2025-03-16 18:34:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219333482] [2025-03-16 18:34:06,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 18:34:06,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 18:34:06,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,618 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 18:34:06,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219333482] [2025-03-16 18:34:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219333482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:06,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411279901] [2025-03-16 18:34:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:06,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:06,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:06,620 INFO L87 Difference]: Start difference. First operand 475 states and 787 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 18:34:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:06,683 INFO L93 Difference]: Finished difference Result 924 states and 1544 transitions. [2025-03-16 18:34:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 78 [2025-03-16 18:34:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:06,687 INFO L225 Difference]: With dead ends: 924 [2025-03-16 18:34:06,688 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 18:34:06,689 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 18:34:06,690 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 18 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:06,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3836 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 18:34:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 18:34:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.6775067750677506) internal successors, (619), 388 states have internal predecessors, (619), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 786 transitions. [2025-03-16 18:34:06,709 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 786 transitions. Word has length 78 [2025-03-16 18:34:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,709 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 786 transitions. [2025-03-16 18:34:06,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 18:34:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 786 transitions. [2025-03-16 18:34:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-16 18:34:06,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,711 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] [2025-03-16 18:34:06,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:34:06,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,712 INFO L85 PathProgramCache]: Analyzing trace with hash -340322047, now seen corresponding path program 1 times [2025-03-16 18:34:06,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649726613] [2025-03-16 18:34:06,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-16 18:34:06,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-16 18:34:06,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,803 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 18:34:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649726613] [2025-03-16 18:34:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649726613] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640743656] [2025-03-16 18:34:06,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:06,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:06,805 INFO L87 Difference]: Start difference. First operand 475 states and 786 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 18:34:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:06,888 INFO L93 Difference]: Finished difference Result 924 states and 1543 transitions. [2025-03-16 18:34:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 79 [2025-03-16 18:34:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:06,893 INFO L225 Difference]: With dead ends: 924 [2025-03-16 18:34:06,893 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 18:34:06,895 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 18:34:06,895 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 17 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:06,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3836 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 18:34:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 18:34:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.6747967479674797) internal successors, (618), 388 states have internal predecessors, (618), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 785 transitions. [2025-03-16 18:34:06,910 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 785 transitions. Word has length 79 [2025-03-16 18:34:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:06,911 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 785 transitions. [2025-03-16 18:34:06,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 18:34:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 785 transitions. [2025-03-16 18:34:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 18:34:06,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:06,914 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] [2025-03-16 18:34:06,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:34:06,915 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:06,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1503414399, now seen corresponding path program 1 times [2025-03-16 18:34:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:06,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080489564] [2025-03-16 18:34:06,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:06,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:06,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 18:34:06,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 18:34:06,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:06,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:06,997 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 18:34:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:06,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080489564] [2025-03-16 18:34:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080489564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:06,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685424397] [2025-03-16 18:34:06,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:06,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:06,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:06,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:06,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:06,999 INFO L87 Difference]: Start difference. First operand 475 states and 785 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:34:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:07,055 INFO L93 Difference]: Finished difference Result 924 states and 1542 transitions. [2025-03-16 18:34:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 80 [2025-03-16 18:34:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:07,064 INFO L225 Difference]: With dead ends: 924 [2025-03-16 18:34:07,064 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 18:34:07,066 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 18:34:07,067 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 16 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3836 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 18:34:07,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3836 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 18:34:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 18:34:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.6720867208672088) internal successors, (617), 388 states have internal predecessors, (617), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 784 transitions. [2025-03-16 18:34:07,082 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 784 transitions. Word has length 80 [2025-03-16 18:34:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:07,082 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 784 transitions. [2025-03-16 18:34:07,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 18:34:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 784 transitions. [2025-03-16 18:34:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-16 18:34:07,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:07,085 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] [2025-03-16 18:34:07,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:34:07,085 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:07,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash -145151522, now seen corresponding path program 1 times [2025-03-16 18:34:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:07,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561014364] [2025-03-16 18:34:07,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:07,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-16 18:34:07,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-16 18:34:07,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:07,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:07,158 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 18:34:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:07,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561014364] [2025-03-16 18:34:07,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561014364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:07,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060912184] [2025-03-16 18:34:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:07,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:07,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:07,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:07,160 INFO L87 Difference]: Start difference. First operand 475 states and 784 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:34:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:07,189 INFO L93 Difference]: Finished difference Result 918 states and 1530 transitions. [2025-03-16 18:34:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2025-03-16 18:34:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:07,194 INFO L225 Difference]: With dead ends: 918 [2025-03-16 18:34:07,194 INFO L226 Difference]: Without dead ends: 475 [2025-03-16 18:34:07,196 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 18:34:07,198 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 5 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:07,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2306 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-16 18:34:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2025-03-16 18:34:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 369 states have (on average 1.6693766937669376) internal successors, (616), 388 states have internal predecessors, (616), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-16 18:34:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 783 transitions. [2025-03-16 18:34:07,233 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 783 transitions. Word has length 81 [2025-03-16 18:34:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:07,234 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 783 transitions. [2025-03-16 18:34:07,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:34:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 783 transitions. [2025-03-16 18:34:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 18:34:07,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:07,236 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] [2025-03-16 18:34:07,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:34:07,236 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:07,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 793460174, now seen corresponding path program 1 times [2025-03-16 18:34:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:07,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58308274] [2025-03-16 18:34:07,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:07,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 18:34:07,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 18:34:07,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:07,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:07,432 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 18:34:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58308274] [2025-03-16 18:34:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58308274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:07,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:07,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:34:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657122410] [2025-03-16 18:34:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:07,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:34:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:07,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:34:07,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:07,434 INFO L87 Difference]: Start difference. First operand 475 states and 783 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:34:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:08,706 INFO L93 Difference]: Finished difference Result 914 states and 1542 transitions. [2025-03-16 18:34:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:34:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2025-03-16 18:34:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:08,710 INFO L225 Difference]: With dead ends: 914 [2025-03-16 18:34:08,710 INFO L226 Difference]: Without dead ends: 479 [2025-03-16 18:34:08,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 18:34:08,713 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 1208 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:08,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1554 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:34:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-03-16 18:34:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2025-03-16 18:34:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 372 states have (on average 1.663978494623656) internal successors, (619), 391 states have internal predecessors, (619), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (97), 80 states have call predecessors, (97), 81 states have call successors, (97) [2025-03-16 18:34:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 802 transitions. [2025-03-16 18:34:08,730 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 802 transitions. Word has length 82 [2025-03-16 18:34:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:08,730 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 802 transitions. [2025-03-16 18:34:08,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:34:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 802 transitions. [2025-03-16 18:34:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-16 18:34:08,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:08,732 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] [2025-03-16 18:34:08,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:34:08,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:08,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash 666567932, now seen corresponding path program 1 times [2025-03-16 18:34:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246199187] [2025-03-16 18:34:08,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:08,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 18:34:08,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 18:34:08,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:08,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:08,831 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 18:34:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246199187] [2025-03-16 18:34:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246199187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570930246] [2025-03-16 18:34:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:08,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:08,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:08,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:08,833 INFO L87 Difference]: Start difference. First operand 479 states and 802 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:11,213 INFO L93 Difference]: Finished difference Result 1719 states and 2966 transitions. [2025-03-16 18:34:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:34:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2025-03-16 18:34:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:11,221 INFO L225 Difference]: With dead ends: 1719 [2025-03-16 18:34:11,221 INFO L226 Difference]: Without dead ends: 1280 [2025-03-16 18:34:11,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 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 18:34:11,224 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 2169 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 4883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:11,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 2545 Invalid, 4883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 18:34:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2025-03-16 18:34:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1223. [2025-03-16 18:34:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 948 states have (on average 1.6729957805907174) internal successors, (1586), 996 states have internal predecessors, (1586), 223 states have call successors, (223), 51 states have call predecessors, (223), 51 states have return successors, (238), 212 states have call predecessors, (238), 218 states have call successors, (238) [2025-03-16 18:34:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 2047 transitions. [2025-03-16 18:34:11,278 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 2047 transitions. Word has length 83 [2025-03-16 18:34:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:11,279 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 2047 transitions. [2025-03-16 18:34:11,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 2047 transitions. [2025-03-16 18:34:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 18:34:11,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:11,280 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] [2025-03-16 18:34:11,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:34:11,280 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:11,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1054111855, now seen corresponding path program 1 times [2025-03-16 18:34:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:11,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493649252] [2025-03-16 18:34:11,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:11,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 18:34:11,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 18:34:11,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:11,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:11,450 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 18:34:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493649252] [2025-03-16 18:34:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493649252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618582840] [2025-03-16 18:34:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:11,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:11,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:11,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:11,451 INFO L87 Difference]: Start difference. First operand 1223 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:13,892 INFO L93 Difference]: Finished difference Result 5341 states and 9148 transitions. [2025-03-16 18:34:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:34:13,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2025-03-16 18:34:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:13,927 INFO L225 Difference]: With dead ends: 5341 [2025-03-16 18:34:13,927 INFO L226 Difference]: Without dead ends: 4158 [2025-03-16 18:34:13,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:34:13,933 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 2690 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 4888 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 5506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 4888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:13,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2795 Valid, 2290 Invalid, 5506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 4888 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 18:34:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2025-03-16 18:34:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3907. [2025-03-16 18:34:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3907 states, 2936 states have (on average 1.6737057220708447) internal successors, (4914), 3113 states have internal predecessors, (4914), 822 states have call successors, (822), 137 states have call predecessors, (822), 148 states have return successors, (962), 797 states have call predecessors, (962), 817 states have call successors, (962) [2025-03-16 18:34:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 6698 transitions. [2025-03-16 18:34:14,083 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 6698 transitions. Word has length 85 [2025-03-16 18:34:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:14,083 INFO L471 AbstractCegarLoop]: Abstraction has 3907 states and 6698 transitions. [2025-03-16 18:34:14,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 6698 transitions. [2025-03-16 18:34:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 18:34:14,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:14,085 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] [2025-03-16 18:34:14,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:34:14,086 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2083471153, now seen corresponding path program 1 times [2025-03-16 18:34:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357589610] [2025-03-16 18:34:14,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:14,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 18:34:14,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 18:34:14,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:14,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:14,235 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 18:34:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357589610] [2025-03-16 18:34:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357589610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:14,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:14,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682344856] [2025-03-16 18:34:14,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:14,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:14,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:14,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:14,237 INFO L87 Difference]: Start difference. First operand 3907 states and 6698 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:16,124 INFO L93 Difference]: Finished difference Result 10692 states and 18467 transitions. [2025-03-16 18:34:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 18:34:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2025-03-16 18:34:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:16,165 INFO L225 Difference]: With dead ends: 10692 [2025-03-16 18:34:16,165 INFO L226 Difference]: Without dead ends: 7848 [2025-03-16 18:34:16,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:34:16,179 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 2236 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:16,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 1668 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 3353 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 18:34:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7848 states. [2025-03-16 18:34:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7848 to 7401. [2025-03-16 18:34:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 5595 states have (on average 1.6702412868632708) internal successors, (9345), 5926 states have internal predecessors, (9345), 1500 states have call successors, (1500), 254 states have call predecessors, (1500), 305 states have return successors, (1882), 1456 states have call predecessors, (1882), 1495 states have call successors, (1882) [2025-03-16 18:34:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 12727 transitions. [2025-03-16 18:34:16,537 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 12727 transitions. Word has length 85 [2025-03-16 18:34:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:16,538 INFO L471 AbstractCegarLoop]: Abstraction has 7401 states and 12727 transitions. [2025-03-16 18:34:16,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:34:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 12727 transitions. [2025-03-16 18:34:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 18:34:16,539 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:16,539 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] [2025-03-16 18:34:16,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:34:16,540 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:16,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1521389650, now seen corresponding path program 1 times [2025-03-16 18:34:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588062106] [2025-03-16 18:34:16,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:16,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:34:16,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:34:16,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:16,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:16,630 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 18:34:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588062106] [2025-03-16 18:34:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588062106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:34:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153094705] [2025-03-16 18:34:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:16,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:34:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:16,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:34:16,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:16,632 INFO L87 Difference]: Start difference. First operand 7401 states and 12727 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:34:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:16,975 INFO L93 Difference]: Finished difference Result 13661 states and 23557 transitions. [2025-03-16 18:34:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:16,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2025-03-16 18:34:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:17,034 INFO L225 Difference]: With dead ends: 13661 [2025-03-16 18:34:17,034 INFO L226 Difference]: Without dead ends: 7488 [2025-03-16 18:34:17,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:17,066 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 0 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:17,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3094 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7488 states. [2025-03-16 18:34:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7488 to 7474. [2025-03-16 18:34:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7474 states, 5651 states have (on average 1.663068483454256) internal successors, (9398), 5981 states have internal predecessors, (9398), 1497 states have call successors, (1497), 254 states have call predecessors, (1497), 325 states have return successors, (1945), 1474 states have call predecessors, (1945), 1492 states have call successors, (1945) [2025-03-16 18:34:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7474 states to 7474 states and 12840 transitions. [2025-03-16 18:34:17,472 INFO L78 Accepts]: Start accepts. Automaton has 7474 states and 12840 transitions. Word has length 90 [2025-03-16 18:34:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:17,473 INFO L471 AbstractCegarLoop]: Abstraction has 7474 states and 12840 transitions. [2025-03-16 18:34:17,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:34:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7474 states and 12840 transitions. [2025-03-16 18:34:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-16 18:34:17,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:17,475 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] [2025-03-16 18:34:17,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:34:17,476 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:17,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 681494280, now seen corresponding path program 1 times [2025-03-16 18:34:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529700576] [2025-03-16 18:34:17,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:17,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:17,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 18:34:17,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 18:34:17,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:17,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:17,634 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 18:34:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:17,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529700576] [2025-03-16 18:34:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529700576] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:17,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 18:34:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74848650] [2025-03-16 18:34:17,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:17,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:34:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:17,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:34:17,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:34:17,635 INFO L87 Difference]: Start difference. First operand 7474 states and 12840 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-16 18:34:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:18,000 INFO L93 Difference]: Finished difference Result 14887 states and 26030 transitions. [2025-03-16 18:34:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:34:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 97 [2025-03-16 18:34:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:18,035 INFO L225 Difference]: With dead ends: 14887 [2025-03-16 18:34:18,036 INFO L226 Difference]: Without dead ends: 7622 [2025-03-16 18:34:18,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:34:18,058 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 244 mSDsluCounter, 5450 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:18,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 6269 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2025-03-16 18:34:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 7498. [2025-03-16 18:34:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7498 states, 5672 states have (on average 1.6394569816643159) internal successors, (9299), 6005 states have internal predecessors, (9299), 1497 states have call successors, (1497), 254 states have call predecessors, (1497), 328 states have return successors, (1957), 1474 states have call predecessors, (1957), 1492 states have call successors, (1957) [2025-03-16 18:34:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12753 transitions. [2025-03-16 18:34:18,373 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12753 transitions. Word has length 97 [2025-03-16 18:34:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:18,374 INFO L471 AbstractCegarLoop]: Abstraction has 7498 states and 12753 transitions. [2025-03-16 18:34:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-16 18:34:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12753 transitions. [2025-03-16 18:34:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-16 18:34:18,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:18,376 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] [2025-03-16 18:34:18,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 18:34:18,376 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:18,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1387144744, now seen corresponding path program 1 times [2025-03-16 18:34:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991629640] [2025-03-16 18:34:18,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:18,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 18:34:18,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 18:34:18,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:18,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:34:18,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991629640] [2025-03-16 18:34:18,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991629640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:18,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:18,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547262023] [2025-03-16 18:34:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:18,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:18,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:18,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:18,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:18,491 INFO L87 Difference]: Start difference. First operand 7498 states and 12753 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:34:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:20,146 INFO L93 Difference]: Finished difference Result 14520 states and 24742 transitions. [2025-03-16 18:34:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:34:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2025-03-16 18:34:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:20,192 INFO L225 Difference]: With dead ends: 14520 [2025-03-16 18:34:20,192 INFO L226 Difference]: Without dead ends: 8266 [2025-03-16 18:34:20,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-16 18:34:20,218 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 1960 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:20,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 1600 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 18:34:20,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2025-03-16 18:34:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 7733. [2025-03-16 18:34:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 5847 states have (on average 1.6278433384641697) internal successors, (9518), 6198 states have internal predecessors, (9518), 1517 states have call successors, (1517), 279 states have call predecessors, (1517), 368 states have return successors, (2049), 1492 states have call predecessors, (2049), 1512 states have call successors, (2049) [2025-03-16 18:34:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 13084 transitions. [2025-03-16 18:34:20,675 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 13084 transitions. Word has length 102 [2025-03-16 18:34:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:20,676 INFO L471 AbstractCegarLoop]: Abstraction has 7733 states and 13084 transitions. [2025-03-16 18:34:20,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:34:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 13084 transitions. [2025-03-16 18:34:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-16 18:34:20,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:20,679 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:20,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:34:20,679 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:20,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -759585378, now seen corresponding path program 1 times [2025-03-16 18:34:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873573493] [2025-03-16 18:34:20,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:20,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:34:20,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:34:20,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:20,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-16 18:34:20,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873573493] [2025-03-16 18:34:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873573493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 18:34:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811390673] [2025-03-16 18:34:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:20,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 18:34:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:20,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 18:34:20,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:34:20,948 INFO L87 Difference]: Start difference. First operand 7733 states and 13084 transitions. Second operand has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-16 18:34:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:23,718 INFO L93 Difference]: Finished difference Result 16725 states and 28060 transitions. [2025-03-16 18:34:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-16 18:34:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 109 [2025-03-16 18:34:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:23,769 INFO L225 Difference]: With dead ends: 16725 [2025-03-16 18:34:23,769 INFO L226 Difference]: Without dead ends: 10055 [2025-03-16 18:34:23,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2025-03-16 18:34:23,795 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 2110 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 7578 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 8038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 7578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:23,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2193 Valid, 3972 Invalid, 8038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 7578 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-16 18:34:23,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2025-03-16 18:34:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 9260. [2025-03-16 18:34:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9260 states, 7055 states have (on average 1.6026931254429482) internal successors, (11307), 7465 states have internal predecessors, (11307), 1710 states have call successors, (1710), 367 states have call predecessors, (1710), 494 states have return successors, (2332), 1664 states have call predecessors, (2332), 1705 states have call successors, (2332) [2025-03-16 18:34:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 15349 transitions. [2025-03-16 18:34:24,203 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 15349 transitions. Word has length 109 [2025-03-16 18:34:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:24,203 INFO L471 AbstractCegarLoop]: Abstraction has 9260 states and 15349 transitions. [2025-03-16 18:34:24,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 7 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2025-03-16 18:34:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 15349 transitions. [2025-03-16 18:34:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-16 18:34:24,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:24,206 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:24,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 18:34:24,206 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:24,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:24,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1208282017, now seen corresponding path program 1 times [2025-03-16 18:34:24,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:24,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614829060] [2025-03-16 18:34:24,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:24,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:34:24,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:34:24,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:24,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-16 18:34:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614829060] [2025-03-16 18:34:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614829060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:24,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754998289] [2025-03-16 18:34:24,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:24,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:24,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:24,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:24,315 INFO L87 Difference]: Start difference. First operand 9260 states and 15349 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:34:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:24,837 INFO L93 Difference]: Finished difference Result 9383 states and 15567 transitions. [2025-03-16 18:34:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:24,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-03-16 18:34:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:24,890 INFO L225 Difference]: With dead ends: 9383 [2025-03-16 18:34:24,890 INFO L226 Difference]: Without dead ends: 9368 [2025-03-16 18:34:24,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:24,899 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 847 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:24,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2731 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:34:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9368 states. [2025-03-16 18:34:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9368 to 9268. [2025-03-16 18:34:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 7063 states have (on average 1.6020104771343622) internal successors, (11315), 7473 states have internal predecessors, (11315), 1710 states have call successors, (1710), 367 states have call predecessors, (1710), 494 states have return successors, (2332), 1664 states have call predecessors, (2332), 1705 states have call successors, (2332) [2025-03-16 18:34:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 15357 transitions. [2025-03-16 18:34:25,312 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 15357 transitions. Word has length 109 [2025-03-16 18:34:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:25,313 INFO L471 AbstractCegarLoop]: Abstraction has 9268 states and 15357 transitions. [2025-03-16 18:34:25,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:34:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 15357 transitions. [2025-03-16 18:34:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-16 18:34:25,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:25,315 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:25,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 18:34:25,316 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:25,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash -416593919, now seen corresponding path program 1 times [2025-03-16 18:34:25,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:25,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921204536] [2025-03-16 18:34:25,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:25,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:34:25,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:34:25,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:25,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-16 18:34:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:25,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921204536] [2025-03-16 18:34:25,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921204536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:25,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 18:34:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912351985] [2025-03-16 18:34:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:25,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 18:34:25,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:25,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 18:34:25,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:34:25,473 INFO L87 Difference]: Start difference. First operand 9268 states and 15357 transitions. Second operand has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:34:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:25,718 INFO L93 Difference]: Finished difference Result 9283 states and 15375 transitions. [2025-03-16 18:34:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:34:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2025-03-16 18:34:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:25,777 INFO L225 Difference]: With dead ends: 9283 [2025-03-16 18:34:25,777 INFO L226 Difference]: Without dead ends: 9268 [2025-03-16 18:34:25,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:34:25,788 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 19 mSDsluCounter, 6076 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6840 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 18:34:25,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6840 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2025-03-16 18:34:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 9268. [2025-03-16 18:34:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 7063 states have (on average 1.6011609797536457) internal successors, (11309), 7473 states have internal predecessors, (11309), 1710 states have call successors, (1710), 367 states have call predecessors, (1710), 494 states have return successors, (2332), 1664 states have call predecessors, (2332), 1705 states have call successors, (2332) [2025-03-16 18:34:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 15351 transitions. [2025-03-16 18:34:26,163 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 15351 transitions. Word has length 113 [2025-03-16 18:34:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:26,164 INFO L471 AbstractCegarLoop]: Abstraction has 9268 states and 15351 transitions. [2025-03-16 18:34:26,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:34:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 15351 transitions. [2025-03-16 18:34:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-16 18:34:26,168 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:26,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:26,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-16 18:34:26,169 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:26,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1027735593, now seen corresponding path program 1 times [2025-03-16 18:34:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565446453] [2025-03-16 18:34:26,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:26,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:34:26,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:34:26,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:26,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:34:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565446453] [2025-03-16 18:34:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565446453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:34:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961584519] [2025-03-16 18:34:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:34:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:26,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:34:26,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:26,352 INFO L87 Difference]: Start difference. First operand 9268 states and 15351 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:34:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:27,546 INFO L93 Difference]: Finished difference Result 18542 states and 30849 transitions. [2025-03-16 18:34:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:34:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2025-03-16 18:34:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:27,590 INFO L225 Difference]: With dead ends: 18542 [2025-03-16 18:34:27,590 INFO L226 Difference]: Without dead ends: 9326 [2025-03-16 18:34:27,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 18:34:27,617 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1153 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:27,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1545 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 18:34:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9326 states. [2025-03-16 18:34:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9326 to 9268. [2025-03-16 18:34:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 7063 states have (on average 1.6003114823729294) internal successors, (11303), 7473 states have internal predecessors, (11303), 1710 states have call successors, (1710), 367 states have call predecessors, (1710), 494 states have return successors, (2332), 1664 states have call predecessors, (2332), 1705 states have call successors, (2332) [2025-03-16 18:34:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 15345 transitions. [2025-03-16 18:34:28,179 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 15345 transitions. Word has length 125 [2025-03-16 18:34:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 9268 states and 15345 transitions. [2025-03-16 18:34:28,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:34:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 15345 transitions. [2025-03-16 18:34:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 18:34:28,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:28,184 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:28,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-16 18:34:28,184 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:28,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1604931773, now seen corresponding path program 1 times [2025-03-16 18:34:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173917406] [2025-03-16 18:34:28,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:28,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:34:28,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:34:28,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:28,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 18:34:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173917406] [2025-03-16 18:34:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173917406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:28,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095072824] [2025-03-16 18:34:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:28,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:28,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:28,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:28,368 INFO L87 Difference]: Start difference. First operand 9268 states and 15345 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:34:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:30,097 INFO L93 Difference]: Finished difference Result 30338 states and 51601 transitions. [2025-03-16 18:34:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2025-03-16 18:34:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:30,235 INFO L225 Difference]: With dead ends: 30338 [2025-03-16 18:34:30,235 INFO L226 Difference]: Without dead ends: 21110 [2025-03-16 18:34:30,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:30,279 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 1727 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:30,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 909 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 18:34:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21110 states. [2025-03-16 18:34:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21110 to 20441. [2025-03-16 18:34:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20441 states, 15235 states have (on average 1.5951427633738102) internal successors, (24302), 16213 states have internal predecessors, (24302), 4172 states have call successors, (4172), 729 states have call predecessors, (4172), 1033 states have return successors, (6455), 4097 states have call predecessors, (6455), 4167 states have call successors, (6455) [2025-03-16 18:34:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20441 states to 20441 states and 34929 transitions. [2025-03-16 18:34:31,238 INFO L78 Accepts]: Start accepts. Automaton has 20441 states and 34929 transitions. Word has length 132 [2025-03-16 18:34:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:31,238 INFO L471 AbstractCegarLoop]: Abstraction has 20441 states and 34929 transitions. [2025-03-16 18:34:31,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:34:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 20441 states and 34929 transitions. [2025-03-16 18:34:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:34:31,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:31,243 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:31,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-16 18:34:31,243 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:31,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1960783581, now seen corresponding path program 1 times [2025-03-16 18:34:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152448836] [2025-03-16 18:34:31,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:31,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:34:31,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:34:31,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:31,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:34:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152448836] [2025-03-16 18:34:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152448836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096692759] [2025-03-16 18:34:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:31,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:31,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:31,335 INFO L87 Difference]: Start difference. First operand 20441 states and 34929 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:34:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:34,733 INFO L93 Difference]: Finished difference Result 68196 states and 121133 transitions. [2025-03-16 18:34:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 135 [2025-03-16 18:34:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:35,125 INFO L225 Difference]: With dead ends: 68196 [2025-03-16 18:34:35,125 INFO L226 Difference]: Without dead ends: 47795 [2025-03-16 18:34:35,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:35,224 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 1723 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:35,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 870 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 18:34:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47795 states. [2025-03-16 18:34:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47795 to 46315. [2025-03-16 18:34:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46315 states, 33656 states have (on average 1.5881863560732112) internal successors, (53452), 36032 states have internal predecessors, (53452), 10486 states have call successors, (10486), 1453 states have call predecessors, (10486), 2172 states have return successors, (18838), 10377 states have call predecessors, (18838), 10481 states have call successors, (18838) [2025-03-16 18:34:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46315 states to 46315 states and 82776 transitions. [2025-03-16 18:34:37,765 INFO L78 Accepts]: Start accepts. Automaton has 46315 states and 82776 transitions. Word has length 135 [2025-03-16 18:34:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:37,765 INFO L471 AbstractCegarLoop]: Abstraction has 46315 states and 82776 transitions. [2025-03-16 18:34:37,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:34:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 46315 states and 82776 transitions. [2025-03-16 18:34:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-16 18:34:37,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:37,771 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:37,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-16 18:34:37,771 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:37,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 654591547, now seen corresponding path program 1 times [2025-03-16 18:34:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648406015] [2025-03-16 18:34:37,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:37,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-16 18:34:37,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-16 18:34:37,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:37,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:34:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648406015] [2025-03-16 18:34:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648406015] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:37,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:37,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:37,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663606380] [2025-03-16 18:34:37,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:37,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:37,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:37,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:37,858 INFO L87 Difference]: Start difference. First operand 46315 states and 82776 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:34:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:45,712 INFO L93 Difference]: Finished difference Result 157242 states and 296590 transitions. [2025-03-16 18:34:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 136 [2025-03-16 18:34:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:46,556 INFO L225 Difference]: With dead ends: 157242 [2025-03-16 18:34:46,556 INFO L226 Difference]: Without dead ends: 110967 [2025-03-16 18:34:46,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:34:46,818 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 1711 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:46,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 867 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 18:34:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110967 states. [2025-03-16 18:34:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110967 to 107970. [2025-03-16 18:34:53,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107970 states, 76372 states have (on average 1.5798198292567958) internal successors, (120654), 82245 states have internal predecessors, (120654), 26999 states have call successors, (26999), 2901 states have call predecessors, (26999), 4598 states have return successors, (56976), 26894 states have call predecessors, (56976), 26994 states have call successors, (56976) [2025-03-16 18:34:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107970 states to 107970 states and 204629 transitions. [2025-03-16 18:34:54,394 INFO L78 Accepts]: Start accepts. Automaton has 107970 states and 204629 transitions. Word has length 136 [2025-03-16 18:34:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:54,395 INFO L471 AbstractCegarLoop]: Abstraction has 107970 states and 204629 transitions. [2025-03-16 18:34:54,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:34:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 107970 states and 204629 transitions. [2025-03-16 18:34:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:34:54,402 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:54,402 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:54,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 18:34:54,402 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:54,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:54,402 INFO L85 PathProgramCache]: Analyzing trace with hash 793922331, now seen corresponding path program 1 times [2025-03-16 18:34:54,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:54,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727624389] [2025-03-16 18:34:54,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:54,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:54,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:34:54,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:34:54,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:54,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-16 18:34:54,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:54,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727624389] [2025-03-16 18:34:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727624389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664603277] [2025-03-16 18:34:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:54,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:54,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:54,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:54,494 INFO L87 Difference]: Start difference. First operand 107970 states and 204629 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)