./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product22.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_product22.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 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:34:44,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:34:44,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:34:44,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:34:44,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:34:44,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:34:44,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:34:44,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:34:44,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:34:44,190 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:34:44,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:34:44,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:34:44,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:34:44,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:34:44,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:34:44,192 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:34:44,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:34:44,192 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:34:44,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:34:44,193 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 -> 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a [2025-03-16 18:34:44,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:34:44,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:34:44,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:34:44,441 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:34:44,441 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:34:44,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2025-03-16 18:34:45,579 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3c66791/ee0b4789354b4fd98a228a0684cd65a1/FLAGd2c7dc17e [2025-03-16 18:34:45,921 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:34:45,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2025-03-16 18:34:45,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3c66791/ee0b4789354b4fd98a228a0684cd65a1/FLAGd2c7dc17e [2025-03-16 18:34:46,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3c66791/ee0b4789354b4fd98a228a0684cd65a1 [2025-03-16 18:34:46,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:34:46,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:34:46,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:34:46,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:34:46,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:34:46,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ef471a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46, skipping insertion in model container [2025-03-16 18:34:46,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:34:46,325 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_product22.cil.c[1545,1558] [2025-03-16 18:34:46,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:34:46,551 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:34:46,557 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-16 18:34:46,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2025-03-16 18:34:46,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [421] [2025-03-16 18:34:46,558 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1088] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1454] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1466] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1586] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1621] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3188] [2025-03-16 18:34:46,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3279] [2025-03-16 18:34:46,566 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_product22.cil.c[1545,1558] [2025-03-16 18:34:46,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:34:46,678 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:34:46,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46 WrapperNode [2025-03-16 18:34:46,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:34:46,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:34:46,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:34:46,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:34:46,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,734 INFO L138 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 872 [2025-03-16 18:34:46,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:34:46,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:34:46,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:34:46,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:34:46,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,770 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 18:34:46,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,782 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:34:46,795 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:34:46,795 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:34:46,796 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:34:46,796 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (1/1) ... [2025-03-16 18:34:46,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:34:46,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:46,825 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 18:34:46,827 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 18:34:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:34:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:34:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:34:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:34:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:34:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:34:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:34:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:34:46,845 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:34:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:34:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:34:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:34:46,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:34:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:34:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:34:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:34:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:34:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:34:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:34:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:34:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:34:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:34:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:34:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:34:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:34:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:34:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:34:46,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:34:47,010 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:34:47,013 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:34:47,084 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1583: #res := ~retValue_acc~10; [2025-03-16 18:34:47,103 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1505: #res := ~retValue_acc~8; [2025-03-16 18:34:47,107 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1699: #res := ~retValue_acc~13; [2025-03-16 18:34:47,129 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1857: #res := ~retValue_acc~14; [2025-03-16 18:34:47,313 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2433: #res#1 := ~retValue_acc~22#1; [2025-03-16 18:34:47,313 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2467-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~23#1; [2025-03-16 18:34:47,389 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2565: #res := ~retValue_acc~26; [2025-03-16 18:34:47,406 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1544: #res := ~retValue_acc~9; [2025-03-16 18:34:47,425 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1900: #res := ~retValue_acc~16; [2025-03-16 18:34:47,495 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2042-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-16 18:34:47,495 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2029-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-16 18:34:47,570 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L774: #res := ~retValue_acc~3; [2025-03-16 18:34:47,671 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2523-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~24#1; [2025-03-16 18:34:47,671 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2551-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-03-16 18:34:47,772 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2394: #res := ~retValue_acc~21; [2025-03-16 18:34:47,825 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L418-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-16 18:34:47,826 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1618-1: valid_product_#res#1 := valid_product_~retValue_acc~12#1; [2025-03-16 18:34:47,834 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L538: #res := ~retValue_acc~2; [2025-03-16 18:34:47,835 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1866: #res := ~retValue_acc~15; [2025-03-16 18:34:47,839 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1085: #res := ~retValue_acc~4; [2025-03-16 18:34:47,961 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2025-03-16 18:34:47,961 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:34:47,980 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:34:47,983 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:34:47,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:34:47 BoogieIcfgContainer [2025-03-16 18:34:47,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:34:47,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:34:47,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:34:47,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:34:47,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:34:46" (1/3) ... [2025-03-16 18:34:47,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@944f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:34:47, skipping insertion in model container [2025-03-16 18:34:47,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:34:46" (2/3) ... [2025-03-16 18:34:47,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@944f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:34:47, skipping insertion in model container [2025-03-16 18:34:47,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:34:47" (3/3) ... [2025-03-16 18:34:47,990 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2025-03-16 18:34:48,000 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:34:48,002 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product22.cil.c that has 26 procedures, 564 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:34:48,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:34:48,064 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;@37963a5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:34:48,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:34:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 462 states have internal predecessors, (747), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-16 18:34:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-16 18:34:48,075 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:48,075 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] [2025-03-16 18:34:48,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:48,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:48,079 INFO L85 PathProgramCache]: Analyzing trace with hash -714347832, now seen corresponding path program 1 times [2025-03-16 18:34:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612962035] [2025-03-16 18:34:48,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:48,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-16 18:34:48,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-16 18:34:48,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:48,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:48,500 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 18:34:48,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612962035] [2025-03-16 18:34:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612962035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92904271] [2025-03-16 18:34:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:48,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:48,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:48,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:48,527 INFO L87 Difference]: Start difference. First operand has 564 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 462 states have internal predecessors, (747), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:48,660 INFO L93 Difference]: Finished difference Result 1113 states and 1866 transitions. [2025-03-16 18:34:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2025-03-16 18:34:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:48,680 INFO L225 Difference]: With dead ends: 1113 [2025-03-16 18:34:48,681 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:34:48,686 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 18:34:48,688 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 5 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2765 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 18:34:48,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2765 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:34:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-16 18:34:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6981566820276497) internal successors, (737), 455 states have internal predecessors, (737), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 928 transitions. [2025-03-16 18:34:48,759 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 928 transitions. Word has length 55 [2025-03-16 18:34:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:48,759 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 928 transitions. [2025-03-16 18:34:48,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 928 transitions. [2025-03-16 18:34:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-16 18:34:48,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:48,765 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:48,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:34:48,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:48,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 692692794, now seen corresponding path program 1 times [2025-03-16 18:34:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:48,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039094518] [2025-03-16 18:34:48,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:48,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-16 18:34:48,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-16 18:34:48,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:48,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:48,933 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 18:34:48,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039094518] [2025-03-16 18:34:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039094518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015913350] [2025-03-16 18:34:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:48,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:48,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:48,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:48,937 INFO L87 Difference]: Start difference. First operand 557 states and 928 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:49,002 INFO L93 Difference]: Finished difference Result 1101 states and 1838 transitions. [2025-03-16 18:34:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2025-03-16 18:34:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:49,009 INFO L225 Difference]: With dead ends: 1101 [2025-03-16 18:34:49,010 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:34:49,013 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 18:34:49,013 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 4 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2747 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 18:34:49,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2747 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:34:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-16 18:34:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.695852534562212) internal successors, (736), 455 states have internal predecessors, (736), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 927 transitions. [2025-03-16 18:34:49,044 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 927 transitions. Word has length 57 [2025-03-16 18:34:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:49,044 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 927 transitions. [2025-03-16 18:34:49,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 927 transitions. [2025-03-16 18:34:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-16 18:34:49,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:49,046 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] [2025-03-16 18:34:49,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:34:49,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:49,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1517452854, now seen corresponding path program 1 times [2025-03-16 18:34:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:49,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389982539] [2025-03-16 18:34:49,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:49,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-16 18:34:49,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-16 18:34:49,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:49,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:49,177 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 18:34:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389982539] [2025-03-16 18:34:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389982539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:49,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628737202] [2025-03-16 18:34:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:49,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:49,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:49,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:49,179 INFO L87 Difference]: Start difference. First operand 557 states and 927 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:49,244 INFO L93 Difference]: Finished difference Result 1101 states and 1837 transitions. [2025-03-16 18:34:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:49,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2025-03-16 18:34:49,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:49,252 INFO L225 Difference]: With dead ends: 1101 [2025-03-16 18:34:49,252 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:34:49,255 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 18:34:49,257 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 3 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2747 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 18:34:49,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2747 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:34:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-16 18:34:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6935483870967742) internal successors, (735), 455 states have internal predecessors, (735), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 926 transitions. [2025-03-16 18:34:49,286 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 926 transitions. Word has length 58 [2025-03-16 18:34:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:49,286 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 926 transitions. [2025-03-16 18:34:49,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 926 transitions. [2025-03-16 18:34:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:34:49,289 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:49,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:49,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:34:49,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:49,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:49,290 INFO L85 PathProgramCache]: Analyzing trace with hash -839170307, now seen corresponding path program 1 times [2025-03-16 18:34:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:49,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245636482] [2025-03-16 18:34:49,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:49,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:34:49,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:34:49,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:49,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:49,417 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 18:34:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245636482] [2025-03-16 18:34:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245636482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040617215] [2025-03-16 18:34:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:49,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:49,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:49,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:49,422 INFO L87 Difference]: Start difference. First operand 557 states and 926 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:49,472 INFO L93 Difference]: Finished difference Result 1101 states and 1836 transitions. [2025-03-16 18:34:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2025-03-16 18:34:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:49,476 INFO L225 Difference]: With dead ends: 1101 [2025-03-16 18:34:49,476 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:34:49,478 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 18:34:49,479 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 2 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2747 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 18:34:49,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2747 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:34:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-16 18:34:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6912442396313363) internal successors, (734), 455 states have internal predecessors, (734), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 925 transitions. [2025-03-16 18:34:49,505 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 925 transitions. Word has length 59 [2025-03-16 18:34:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:49,506 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 925 transitions. [2025-03-16 18:34:49,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 925 transitions. [2025-03-16 18:34:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:34:49,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:49,507 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:49,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:34:49,507 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:49,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash -813926931, now seen corresponding path program 1 times [2025-03-16 18:34:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:49,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597801648] [2025-03-16 18:34:49,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:49,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:34:49,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:34:49,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:49,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:49,602 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 18:34:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597801648] [2025-03-16 18:34:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597801648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:49,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:49,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953805616] [2025-03-16 18:34:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:49,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:49,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:49,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:49,605 INFO L87 Difference]: Start difference. First operand 557 states and 925 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:49,644 INFO L93 Difference]: Finished difference Result 1101 states and 1835 transitions. [2025-03-16 18:34:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:49,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2025-03-16 18:34:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:49,649 INFO L225 Difference]: With dead ends: 1101 [2025-03-16 18:34:49,650 INFO L226 Difference]: Without dead ends: 557 [2025-03-16 18:34:49,652 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 18:34:49,653 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 1 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2747 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 18:34:49,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2747 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-16 18:34:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-16 18:34:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6889400921658986) internal successors, (733), 455 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 924 transitions. [2025-03-16 18:34:49,681 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 924 transitions. Word has length 60 [2025-03-16 18:34:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:49,681 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 924 transitions. [2025-03-16 18:34:49,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 924 transitions. [2025-03-16 18:34:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:34:49,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:49,684 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:49,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:34:49,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:49,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash 441938624, now seen corresponding path program 1 times [2025-03-16 18:34:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:49,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863121996] [2025-03-16 18:34:49,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:49,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:34:49,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:34:49,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:49,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:49,840 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 18:34:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863121996] [2025-03-16 18:34:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863121996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186169849] [2025-03-16 18:34:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:49,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:49,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:49,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:49,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:49,841 INFO L87 Difference]: Start difference. First operand 557 states and 924 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:34:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:49,925 INFO L93 Difference]: Finished difference Result 1067 states and 1767 transitions. [2025-03-16 18:34:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:34:49,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2025-03-16 18:34:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:49,930 INFO L225 Difference]: With dead ends: 1067 [2025-03-16 18:34:49,930 INFO L226 Difference]: Without dead ends: 572 [2025-03-16 18:34:49,932 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 18:34:49,932 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 91 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5403 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 18:34:49,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-03-16 18:34:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 570. [2025-03-16 18:34:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 444 states have (on average 1.6846846846846846) internal successors, (748), 467 states have internal predecessors, (748), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-16 18:34:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2025-03-16 18:34:49,956 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 61 [2025-03-16 18:34:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:49,958 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2025-03-16 18:34:49,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:34:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2025-03-16 18:34:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:34:49,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:49,961 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:49,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:34:49,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:49,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash 434179265, now seen corresponding path program 1 times [2025-03-16 18:34:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168153915] [2025-03-16 18:34:49,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:49,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:34:49,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:34:49,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:49,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:50,033 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 18:34:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168153915] [2025-03-16 18:34:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168153915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:50,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640961183] [2025-03-16 18:34:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:50,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:50,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:50,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:50,035 INFO L87 Difference]: Start difference. First operand 570 states and 943 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:50,074 INFO L93 Difference]: Finished difference Result 1119 states and 1861 transitions. [2025-03-16 18:34:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2025-03-16 18:34:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:50,079 INFO L225 Difference]: With dead ends: 1119 [2025-03-16 18:34:50,080 INFO L226 Difference]: Without dead ends: 551 [2025-03-16 18:34:50,082 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 18:34:50,082 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 0 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2749 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 18:34:50,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2749 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-03-16 18:34:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2025-03-16 18:34:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 428 states have (on average 1.6799065420560748) internal successors, (719), 449 states have internal predecessors, (719), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 910 transitions. [2025-03-16 18:34:50,101 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 910 transitions. Word has length 61 [2025-03-16 18:34:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:50,102 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 910 transitions. [2025-03-16 18:34:50,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 910 transitions. [2025-03-16 18:34:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:34:50,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:50,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:50,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:34:50,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:50,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2134521789, now seen corresponding path program 1 times [2025-03-16 18:34:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:50,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053078002] [2025-03-16 18:34:50,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:50,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:34:50,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:34:50,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:50,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:50,204 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 18:34:50,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:50,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053078002] [2025-03-16 18:34:50,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053078002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:50,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:50,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973578063] [2025-03-16 18:34:50,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:50,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:50,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:50,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:50,206 INFO L87 Difference]: Start difference. First operand 551 states and 910 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:50,371 INFO L93 Difference]: Finished difference Result 1064 states and 1759 transitions. [2025-03-16 18:34:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:50,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2025-03-16 18:34:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:50,375 INFO L225 Difference]: With dead ends: 1064 [2025-03-16 18:34:50,375 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:34:50,377 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 18:34:50,378 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 55 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4306 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 18:34:50,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4306 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:34:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 551. [2025-03-16 18:34:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 428 states have (on average 1.6705607476635513) internal successors, (715), 449 states have internal predecessors, (715), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 906 transitions. [2025-03-16 18:34:50,395 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 906 transitions. Word has length 62 [2025-03-16 18:34:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:50,395 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 906 transitions. [2025-03-16 18:34:50,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 906 transitions. [2025-03-16 18:34:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:34:50,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:50,396 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:50,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:34:50,397 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:50,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -343137431, now seen corresponding path program 1 times [2025-03-16 18:34:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368474162] [2025-03-16 18:34:50,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:50,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:34:50,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:34:50,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:50,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:50,505 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 18:34:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368474162] [2025-03-16 18:34:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368474162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662124999] [2025-03-16 18:34:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:50,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:50,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:50,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:50,507 INFO L87 Difference]: Start difference. First operand 551 states and 906 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:50,650 INFO L93 Difference]: Finished difference Result 1064 states and 1755 transitions. [2025-03-16 18:34:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:50,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-03-16 18:34:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:50,654 INFO L225 Difference]: With dead ends: 1064 [2025-03-16 18:34:50,654 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:34:50,656 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 18:34:50,659 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 54 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4306 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 18:34:50,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4306 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:34:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 551. [2025-03-16 18:34:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 428 states have (on average 1.661214953271028) internal successors, (711), 449 states have internal predecessors, (711), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 902 transitions. [2025-03-16 18:34:50,678 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 902 transitions. Word has length 63 [2025-03-16 18:34:50,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:50,678 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 902 transitions. [2025-03-16 18:34:50,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 902 transitions. [2025-03-16 18:34:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:34:50,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:50,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:50,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:34:50,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:50,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 376669344, now seen corresponding path program 1 times [2025-03-16 18:34:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695209755] [2025-03-16 18:34:50,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:50,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:34:50,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:34:50,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:50,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:50,775 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 18:34:50,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695209755] [2025-03-16 18:34:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695209755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:50,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8298904] [2025-03-16 18:34:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:50,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:50,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:50,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:50,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:50,776 INFO L87 Difference]: Start difference. First operand 551 states and 902 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:50,910 INFO L93 Difference]: Finished difference Result 1064 states and 1751 transitions. [2025-03-16 18:34:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-03-16 18:34:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:50,916 INFO L225 Difference]: With dead ends: 1064 [2025-03-16 18:34:50,916 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:34:50,918 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 18:34:50,918 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 53 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:50,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4288 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:34:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:34:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 551. [2025-03-16 18:34:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 428 states have (on average 1.6518691588785046) internal successors, (707), 449 states have internal predecessors, (707), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 898 transitions. [2025-03-16 18:34:50,935 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 898 transitions. Word has length 64 [2025-03-16 18:34:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:50,935 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 898 transitions. [2025-03-16 18:34:50,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 898 transitions. [2025-03-16 18:34:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:34:50,936 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:50,936 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:50,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:34:50,936 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:50,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1091760559, now seen corresponding path program 1 times [2025-03-16 18:34:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513596235] [2025-03-16 18:34:50,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:50,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:34:50,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:34:50,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:50,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:51,031 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 18:34:51,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:51,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513596235] [2025-03-16 18:34:51,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513596235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:51,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:51,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:34:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361410517] [2025-03-16 18:34:51,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:51,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:34:51,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:51,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:34:51,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:51,033 INFO L87 Difference]: Start difference. First operand 551 states and 898 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:34:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:51,086 INFO L93 Difference]: Finished difference Result 1055 states and 1733 transitions. [2025-03-16 18:34:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:34:51,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2025-03-16 18:34:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:51,090 INFO L225 Difference]: With dead ends: 1055 [2025-03-16 18:34:51,090 INFO L226 Difference]: Without dead ends: 530 [2025-03-16 18:34:51,091 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 18:34:51,092 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 84 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5249 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 18:34:51,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5249 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-03-16 18:34:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2025-03-16 18:34:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 407 states have (on average 1.6535626535626535) internal successors, (673), 428 states have internal predecessors, (673), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 864 transitions. [2025-03-16 18:34:51,106 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 864 transitions. Word has length 64 [2025-03-16 18:34:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:51,107 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 864 transitions. [2025-03-16 18:34:51,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:34:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 864 transitions. [2025-03-16 18:34:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:34:51,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:51,108 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] [2025-03-16 18:34:51,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 18:34:51,108 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:51,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2057657882, now seen corresponding path program 1 times [2025-03-16 18:34:51,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528222073] [2025-03-16 18:34:51,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:51,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:34:51,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:34:51,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:51,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:51,178 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 18:34:51,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528222073] [2025-03-16 18:34:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528222073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:51,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:51,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191132092] [2025-03-16 18:34:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:51,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:51,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:51,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:51,180 INFO L87 Difference]: Start difference. First operand 530 states and 864 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:51,235 INFO L93 Difference]: Finished difference Result 1034 states and 1699 transitions. [2025-03-16 18:34:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-03-16 18:34:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:51,239 INFO L225 Difference]: With dead ends: 1034 [2025-03-16 18:34:51,239 INFO L226 Difference]: Without dead ends: 530 [2025-03-16 18:34:51,241 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 18:34:51,242 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 17 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:51,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4226 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-03-16 18:34:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2025-03-16 18:34:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 407 states have (on average 1.651105651105651) internal successors, (672), 428 states have internal predecessors, (672), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 863 transitions. [2025-03-16 18:34:51,257 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 863 transitions. Word has length 65 [2025-03-16 18:34:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:51,257 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 863 transitions. [2025-03-16 18:34:51,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 863 transitions. [2025-03-16 18:34:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:34:51,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:51,259 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:51,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 18:34:51,259 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:51,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash 809075965, now seen corresponding path program 1 times [2025-03-16 18:34:51,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097541565] [2025-03-16 18:34:51,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:51,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:34:51,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:34:51,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:51,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:51,336 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 18:34:51,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:51,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097541565] [2025-03-16 18:34:51,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097541565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:51,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357558162] [2025-03-16 18:34:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:51,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:51,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:51,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:51,338 INFO L87 Difference]: Start difference. First operand 530 states and 863 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:51,393 INFO L93 Difference]: Finished difference Result 1034 states and 1698 transitions. [2025-03-16 18:34:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2025-03-16 18:34:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:51,397 INFO L225 Difference]: With dead ends: 1034 [2025-03-16 18:34:51,397 INFO L226 Difference]: Without dead ends: 530 [2025-03-16 18:34:51,399 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 18:34:51,399 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 16 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4226 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 18:34:51,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4226 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-03-16 18:34:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2025-03-16 18:34:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 407 states have (on average 1.6486486486486487) internal successors, (671), 428 states have internal predecessors, (671), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 862 transitions. [2025-03-16 18:34:51,413 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 862 transitions. Word has length 66 [2025-03-16 18:34:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:51,413 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 862 transitions. [2025-03-16 18:34:51,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 862 transitions. [2025-03-16 18:34:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:34:51,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:51,415 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:51,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:34:51,415 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:51,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 504978531, now seen corresponding path program 1 times [2025-03-16 18:34:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881256542] [2025-03-16 18:34:51,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:51,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:51,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:34:51,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:34:51,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:51,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:51,486 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 18:34:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881256542] [2025-03-16 18:34:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881256542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:51,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:34:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723846048] [2025-03-16 18:34:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:51,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:51,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:34:51,488 INFO L87 Difference]: Start difference. First operand 530 states and 862 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:51,530 INFO L93 Difference]: Finished difference Result 1028 states and 1686 transitions. [2025-03-16 18:34:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:51,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2025-03-16 18:34:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:51,534 INFO L225 Difference]: With dead ends: 1028 [2025-03-16 18:34:51,534 INFO L226 Difference]: Without dead ends: 530 [2025-03-16 18:34:51,536 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 18:34:51,537 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 5 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2540 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 18:34:51,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2540 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-03-16 18:34:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2025-03-16 18:34:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 407 states have (on average 1.6461916461916462) internal successors, (670), 428 states have internal predecessors, (670), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-16 18:34:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 861 transitions. [2025-03-16 18:34:51,555 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 861 transitions. Word has length 67 [2025-03-16 18:34:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:51,555 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 861 transitions. [2025-03-16 18:34:51,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:34:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 861 transitions. [2025-03-16 18:34:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:34:51,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:51,557 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:51,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 18:34:51,557 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:51,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2117062870, now seen corresponding path program 1 times [2025-03-16 18:34:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931553327] [2025-03-16 18:34:51,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:51,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:34:51,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:34:51,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:51,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:51,723 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 18:34:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931553327] [2025-03-16 18:34:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931553327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:51,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:34:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425524936] [2025-03-16 18:34:51,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:51,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:34:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:51,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:34:51,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:51,725 INFO L87 Difference]: Start difference. First operand 530 states and 861 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-16 18:34:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:53,601 INFO L93 Difference]: Finished difference Result 1658 states and 2750 transitions. [2025-03-16 18:34:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:34:53,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 68 [2025-03-16 18:34:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:53,609 INFO L225 Difference]: With dead ends: 1658 [2025-03-16 18:34:53,609 INFO L226 Difference]: Without dead ends: 1168 [2025-03-16 18:34:53,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:53,612 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 3265 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:53,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 966 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:34:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2025-03-16 18:34:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1046. [2025-03-16 18:34:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 811 states have (on average 1.6633785450061653) internal successors, (1349), 841 states have internal predecessors, (1349), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2025-03-16 18:34:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1731 transitions. [2025-03-16 18:34:53,656 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1731 transitions. Word has length 68 [2025-03-16 18:34:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:53,657 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1731 transitions. [2025-03-16 18:34:53,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-16 18:34:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1731 transitions. [2025-03-16 18:34:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:34:53,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:53,660 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:53,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:34:53,660 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:53,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash -726318315, now seen corresponding path program 1 times [2025-03-16 18:34:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327967471] [2025-03-16 18:34:53,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:53,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:34:53,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:34:53,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:53,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:54,010 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 18:34:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327967471] [2025-03-16 18:34:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327967471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:54,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-16 18:34:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977371296] [2025-03-16 18:34:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:54,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-16 18:34:54,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:54,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-16 18:34:54,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:34:54,011 INFO L87 Difference]: Start difference. First operand 1046 states and 1731 transitions. Second operand has 14 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 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 18:34:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:59,180 INFO L93 Difference]: Finished difference Result 3835 states and 6366 transitions. [2025-03-16 18:34:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-16 18:34:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 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 106 [2025-03-16 18:34:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:59,197 INFO L225 Difference]: With dead ends: 3835 [2025-03-16 18:34:59,197 INFO L226 Difference]: Without dead ends: 2829 [2025-03-16 18:34:59,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2025-03-16 18:34:59,205 INFO L435 NwaCegarLoop]: 752 mSDtfsCounter, 2227 mSDsluCounter, 6550 mSDsCounter, 0 mSdLazyCounter, 13271 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7302 SdHoareTripleChecker+Invalid, 13893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 13271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:59,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7302 Invalid, 13893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [622 Valid, 13271 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-03-16 18:34:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2025-03-16 18:34:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2737. [2025-03-16 18:34:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2054 states have (on average 1.6295034079844206) internal successors, (3347), 2130 states have internal predecessors, (3347), 566 states have call successors, (566), 99 states have call predecessors, (566), 116 states have return successors, (599), 540 states have call predecessors, (599), 561 states have call successors, (599) [2025-03-16 18:34:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4512 transitions. [2025-03-16 18:34:59,322 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4512 transitions. Word has length 106 [2025-03-16 18:34:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:59,322 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 4512 transitions. [2025-03-16 18:34:59,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 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 18:34:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4512 transitions. [2025-03-16 18:34:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-16 18:34:59,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:59,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:59,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:34:59,326 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:59,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1711533020, now seen corresponding path program 1 times [2025-03-16 18:34:59,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:59,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503449749] [2025-03-16 18:34:59,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:59,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:59,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:34:59,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:34:59,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:59,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:59,605 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 18:34:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503449749] [2025-03-16 18:34:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503449749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:34:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:34:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684350408] [2025-03-16 18:34:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:59,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:34:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:59,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:34:59,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:34:59,606 INFO L87 Difference]: Start difference. First operand 2737 states and 4512 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:35:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:00,757 INFO L93 Difference]: Finished difference Result 5462 states and 9149 transitions. [2025-03-16 18:35:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:35:00,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2025-03-16 18:35:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:00,772 INFO L225 Difference]: With dead ends: 5462 [2025-03-16 18:35:00,772 INFO L226 Difference]: Without dead ends: 2765 [2025-03-16 18:35:00,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:35:00,785 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1311 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:00,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1571 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 18:35:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2025-03-16 18:35:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2761. [2025-03-16 18:35:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2072 states have (on average 1.624034749034749) internal successors, (3365), 2148 states have internal predecessors, (3365), 566 states have call successors, (566), 99 states have call predecessors, (566), 122 states have return successors, (665), 546 states have call predecessors, (665), 561 states have call successors, (665) [2025-03-16 18:35:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 4596 transitions. [2025-03-16 18:35:00,906 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 4596 transitions. Word has length 107 [2025-03-16 18:35:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:00,906 INFO L471 AbstractCegarLoop]: Abstraction has 2761 states and 4596 transitions. [2025-03-16 18:35:00,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:35:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 4596 transitions. [2025-03-16 18:35:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-16 18:35:00,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:00,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:00,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:35:00,910 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:00,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash -487485617, now seen corresponding path program 1 times [2025-03-16 18:35:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:00,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17608803] [2025-03-16 18:35:00,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:00,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:00,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:35:00,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:35:00,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:00,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:01,110 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 18:35:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17608803] [2025-03-16 18:35:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17608803] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:35:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435768260] [2025-03-16 18:35:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:01,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:35:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:01,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:35:01,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:35:01,113 INFO L87 Difference]: Start difference. First operand 2761 states and 4596 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:35:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:03,153 INFO L93 Difference]: Finished difference Result 8878 states and 15145 transitions. [2025-03-16 18:35:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:35:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2025-03-16 18:35:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:03,205 INFO L225 Difference]: With dead ends: 8878 [2025-03-16 18:35:03,205 INFO L226 Difference]: Without dead ends: 6157 [2025-03-16 18:35:03,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:35:03,218 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 2757 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 4528 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 4528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:03,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 2493 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 4528 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:35:03,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2025-03-16 18:35:03,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 5922. [2025-03-16 18:35:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 4448 states have (on average 1.6130845323741008) internal successors, (7175), 4629 states have internal predecessors, (7175), 1204 states have call successors, (1204), 237 states have call predecessors, (1204), 269 states have return successors, (1389), 1132 states have call predecessors, (1389), 1199 states have call successors, (1389) [2025-03-16 18:35:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 9768 transitions. [2025-03-16 18:35:03,519 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 9768 transitions. Word has length 108 [2025-03-16 18:35:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:03,520 INFO L471 AbstractCegarLoop]: Abstraction has 5922 states and 9768 transitions. [2025-03-16 18:35:03,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:35:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 9768 transitions. [2025-03-16 18:35:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-16 18:35:03,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:03,524 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:03,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:35:03,524 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:03,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 63963994, now seen corresponding path program 1 times [2025-03-16 18:35:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758782545] [2025-03-16 18:35:03,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:03,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-16 18:35:03,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-16 18:35:03,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:03,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:35:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758782545] [2025-03-16 18:35:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758782545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880330147] [2025-03-16 18:35:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:03,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:03,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:03,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:03,692 INFO L87 Difference]: Start difference. First operand 5922 states and 9768 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:05,778 INFO L93 Difference]: Finished difference Result 16840 states and 28240 transitions. [2025-03-16 18:35:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:35:05,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 110 [2025-03-16 18:35:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:05,834 INFO L225 Difference]: With dead ends: 16840 [2025-03-16 18:35:05,834 INFO L226 Difference]: Without dead ends: 10954 [2025-03-16 18:35:05,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:05,856 INFO L435 NwaCegarLoop]: 719 mSDtfsCounter, 3256 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 4198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:05,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 1799 Invalid, 4198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 18:35:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2025-03-16 18:35:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 9463. [2025-03-16 18:35:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9463 states, 6963 states have (on average 1.5988797931925893) internal successors, (11133), 7301 states have internal predecessors, (11133), 2070 states have call successors, (2070), 360 states have call predecessors, (2070), 429 states have return successors, (2408), 1997 states have call predecessors, (2408), 2065 states have call successors, (2408) [2025-03-16 18:35:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 15611 transitions. [2025-03-16 18:35:06,333 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 15611 transitions. Word has length 110 [2025-03-16 18:35:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:06,333 INFO L471 AbstractCegarLoop]: Abstraction has 9463 states and 15611 transitions. [2025-03-16 18:35:06,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 15611 transitions. [2025-03-16 18:35:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-16 18:35:06,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:06,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:06,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:35:06,337 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:06,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 744896945, now seen corresponding path program 1 times [2025-03-16 18:35:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:06,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083003424] [2025-03-16 18:35:06,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:06,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:06,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:35:06,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:35:06,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:06,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:35:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083003424] [2025-03-16 18:35:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083003424] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:06,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:06,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534150550] [2025-03-16 18:35:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:06,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:06,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:06,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:06,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:06,508 INFO L87 Difference]: Start difference. First operand 9463 states and 15611 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:09,228 INFO L93 Difference]: Finished difference Result 30617 states and 51701 transitions. [2025-03-16 18:35:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:35:09,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 111 [2025-03-16 18:35:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:09,334 INFO L225 Difference]: With dead ends: 30617 [2025-03-16 18:35:09,334 INFO L226 Difference]: Without dead ends: 21197 [2025-03-16 18:35:09,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:09,377 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 3269 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 4187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:09,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 1812 Invalid, 4187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 3285 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 18:35:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21197 states. [2025-03-16 18:35:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21197 to 18317. [2025-03-16 18:35:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18317 states, 13149 states have (on average 1.5854437599817477) internal successors, (20847), 13887 states have internal predecessors, (20847), 4359 states have call successors, (4359), 608 states have call predecessors, (4359), 808 states have return successors, (5177), 4318 states have call predecessors, (5177), 4354 states have call successors, (5177) [2025-03-16 18:35:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18317 states to 18317 states and 30383 transitions. [2025-03-16 18:35:10,659 INFO L78 Accepts]: Start accepts. Automaton has 18317 states and 30383 transitions. Word has length 111 [2025-03-16 18:35:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:10,659 INFO L471 AbstractCegarLoop]: Abstraction has 18317 states and 30383 transitions. [2025-03-16 18:35:10,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18317 states and 30383 transitions. [2025-03-16 18:35:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:35:10,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:10,663 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:10,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 18:35:10,663 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:10,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:10,664 INFO L85 PathProgramCache]: Analyzing trace with hash 689403573, now seen corresponding path program 1 times [2025-03-16 18:35:10,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:10,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703042002] [2025-03-16 18:35:10,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:10,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:35:10,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:35:10,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:10,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:35:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703042002] [2025-03-16 18:35:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703042002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457416575] [2025-03-16 18:35:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:10,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:10,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:10,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:10,824 INFO L87 Difference]: Start difference. First operand 18317 states and 30383 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:14,971 INFO L93 Difference]: Finished difference Result 67196 states and 114440 transitions. [2025-03-16 18:35:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:35:14,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 112 [2025-03-16 18:35:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:15,263 INFO L225 Difference]: With dead ends: 67196 [2025-03-16 18:35:15,264 INFO L226 Difference]: Without dead ends: 48924 [2025-03-16 18:35:15,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:15,355 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 3281 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3319 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 4195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:15,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3319 Valid, 1833 Invalid, 4195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 3288 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:35:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48924 states. [2025-03-16 18:35:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48924 to 41589. [2025-03-16 18:35:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41589 states, 29215 states have (on average 1.5773404073250044) internal successors, (46082), 31011 states have internal predecessors, (46082), 10614 states have call successors, (10614), 1104 states have call predecessors, (10614), 1759 states have return successors, (12976), 10747 states have call predecessors, (12976), 10609 states have call successors, (12976) [2025-03-16 18:35:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41589 states to 41589 states and 69672 transitions. [2025-03-16 18:35:18,919 INFO L78 Accepts]: Start accepts. Automaton has 41589 states and 69672 transitions. Word has length 112 [2025-03-16 18:35:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:18,920 INFO L471 AbstractCegarLoop]: Abstraction has 41589 states and 69672 transitions. [2025-03-16 18:35:18,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 41589 states and 69672 transitions. [2025-03-16 18:35:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-16 18:35:18,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:18,923 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:18,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:35:18,924 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:18,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -720469332, now seen corresponding path program 1 times [2025-03-16 18:35:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096159196] [2025-03-16 18:35:18,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:18,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:35:18,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:35:18,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:18,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:35:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:19,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096159196] [2025-03-16 18:35:19,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096159196] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:19,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:19,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:19,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387484636] [2025-03-16 18:35:19,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:19,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:19,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:19,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:19,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:19,049 INFO L87 Difference]: Start difference. First operand 41589 states and 69672 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:35:28,793 INFO L93 Difference]: Finished difference Result 168883 states and 290328 transitions. [2025-03-16 18:35:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:35:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 113 [2025-03-16 18:35:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:35:29,679 INFO L225 Difference]: With dead ends: 168883 [2025-03-16 18:35:29,679 INFO L226 Difference]: Without dead ends: 127343 [2025-03-16 18:35:29,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:35:29,855 INFO L435 NwaCegarLoop]: 730 mSDtfsCounter, 3293 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:35:29,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3332 Valid, 1854 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:35:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127343 states. [2025-03-16 18:35:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127343 to 105765. [2025-03-16 18:35:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105765 states, 73275 states have (on average 1.5742476970317298) internal successors, (115353), 77955 states have internal predecessors, (115353), 28189 states have call successors, (28189), 2096 states have call predecessors, (28189), 4300 states have return successors, (35557), 29024 states have call predecessors, (35557), 28184 states have call successors, (35557) [2025-03-16 18:35:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105765 states to 105765 states and 179099 transitions. [2025-03-16 18:35:37,646 INFO L78 Accepts]: Start accepts. Automaton has 105765 states and 179099 transitions. Word has length 113 [2025-03-16 18:35:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:35:37,647 INFO L471 AbstractCegarLoop]: Abstraction has 105765 states and 179099 transitions. [2025-03-16 18:35:37,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-16 18:35:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 105765 states and 179099 transitions. [2025-03-16 18:35:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:35:37,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:35:37,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:35:37,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 18:35:37,650 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:35:37,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:35:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1166434800, now seen corresponding path program 1 times [2025-03-16 18:35:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:35:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493144061] [2025-03-16 18:35:37,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:35:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:35:37,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:35:37,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:35:37,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:35:37,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:35:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:35:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:35:37,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493144061] [2025-03-16 18:35:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493144061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:35:37,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:35:37,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:35:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058922606] [2025-03-16 18:35:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:35:37,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:35:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:35:37,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:35:37,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:35:37,780 INFO L87 Difference]: Start difference. First operand 105765 states and 179099 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 6 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13)