./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product28.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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:18:08,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:18:08,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:18:08,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:18:08,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:18:08,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:18:08,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:18:08,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:18:08,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:18:08,150 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:18:08,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:18:08,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:18:08,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:18:08,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:18:08,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:18:08,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:08,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:18:08,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:18:08,152 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 -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2025-03-03 14:18:08,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:18:08,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:18:08,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:18:08,393 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:18:08,393 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:18:08,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2025-03-03 14:18:09,498 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27621495a/da609f71c15546828ffcc66708408beb/FLAGdbf34f0d7 [2025-03-03 14:18:09,767 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:18:09,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2025-03-03 14:18:09,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27621495a/da609f71c15546828ffcc66708408beb/FLAGdbf34f0d7 [2025-03-03 14:18:09,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27621495a/da609f71c15546828ffcc66708408beb [2025-03-03 14:18:09,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:18:09,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:18:09,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:09,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:18:09,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:18:09,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:09" (1/1) ... [2025-03-03 14:18:09,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7a3495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:09, skipping insertion in model container [2025-03-03 14:18:09,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:09" (1/1) ... [2025-03-03 14:18:09,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:18:10,245 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2025-03-03 14:18:10,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:10,261 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:18:10,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [48] [2025-03-03 14:18:10,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [242] [2025-03-03 14:18:10,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1847] [2025-03-03 14:18:10,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2213] [2025-03-03 14:18:10,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2231] [2025-03-03 14:18:10,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2350] [2025-03-03 14:18:10,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2703] [2025-03-03 14:18:10,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3364] [2025-03-03 14:18:10,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2025-03-03 14:18:10,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3464] [2025-03-03 14:18:10,358 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2025-03-03 14:18:10,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:10,387 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:18:10,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10 WrapperNode [2025-03-03 14:18:10,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:10,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:10,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:18:10,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:18:10,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,449 INFO L138 Inliner]: procedures = 95, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1152 [2025-03-03 14:18:10,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:10,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:18:10,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:18:10,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:18:10,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,479 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:18:10,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,501 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:18:10,526 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:18:10,526 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:18:10,526 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:18:10,527 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (1/1) ... [2025-03-03 14:18:10,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:10,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:10,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:18:10,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:18:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:18:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:18:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:18:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:18:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:18:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:18:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:18:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-03 14:18:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-03 14:18:10,724 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:18:10,726 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:18:10,755 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L555: #res := ~retValue_acc~4; [2025-03-03 14:18:10,779 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2269: #res := ~retValue_acc~20; [2025-03-03 14:18:10,812 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1835: #res := ~retValue_acc~15; [2025-03-03 14:18:10,993 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1069: #res#1 := ~retValue_acc~9#1; [2025-03-03 14:18:10,993 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1040-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~8#1; [2025-03-03 14:18:11,000 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1204: #res := ~retValue_acc~13; [2025-03-03 14:18:11,058 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L688-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-03-03 14:18:11,058 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L675-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-03-03 14:18:11,143 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L512-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~2#1; [2025-03-03 14:18:11,146 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3361: #res := ~retValue_acc~27; [2025-03-03 14:18:11,155 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2347: #res := ~retValue_acc~22; [2025-03-03 14:18:11,157 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L330: #res := ~retValue_acc~0; [2025-03-03 14:18:11,159 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L503: #res := ~retValue_acc~1; [2025-03-03 14:18:11,174 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1159: #res := ~retValue_acc~11; [2025-03-03 14:18:11,275 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2308: #res := ~retValue_acc~21; [2025-03-03 14:18:11,290 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L546: #res := ~retValue_acc~3; [2025-03-03 14:18:11,320 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L595-1: isEmpty_#res#1 := isEmpty_~retValue_acc~5#1; [2025-03-03 14:18:11,371 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3050: #res := ~retValue_acc~26; [2025-03-03 14:18:11,426 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3496-1: valid_product_#res#1 := valid_product_~retValue_acc~29#1; [2025-03-03 14:18:11,426 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2700-1: main_#res#1 := main_~retValue_acc~24#1; [2025-03-03 14:18:11,435 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2814: #res := ~retValue_acc~25; [2025-03-03 14:18:11,505 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1190-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-03-03 14:18:11,661 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2025-03-03 14:18:11,661 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:18:11,686 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:18:11,686 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:18:11,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:11 BoogieIcfgContainer [2025-03-03 14:18:11,686 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:18:11,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:18:11,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:18:11,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:18:11,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:18:09" (1/3) ... [2025-03-03 14:18:11,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d878237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:11, skipping insertion in model container [2025-03-03 14:18:11,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:10" (2/3) ... [2025-03-03 14:18:11,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d878237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:11, skipping insertion in model container [2025-03-03 14:18:11,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:11" (3/3) ... [2025-03-03 14:18:11,693 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2025-03-03 14:18:11,703 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:18:11,706 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product28.cil.c that has 29 procedures, 605 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:18:11,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:18:11,770 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;@79629873, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:18:11,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:18:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 465 states have (on average 1.6666666666666667) internal successors, (775), 485 states have internal predecessors, (775), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-03 14:18:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 14:18:11,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:11,787 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] [2025-03-03 14:18:11,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:11,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -537247889, now seen corresponding path program 1 times [2025-03-03 14:18:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:11,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060387084] [2025-03-03 14:18:11,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:11,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:11,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 14:18:11,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 14:18:11,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:11,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060387084] [2025-03-03 14:18:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060387084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:12,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:12,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804150357] [2025-03-03 14:18:12,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:12,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:12,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:12,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:12,385 INFO L87 Difference]: Start difference. First operand has 605 states, 465 states have (on average 1.6666666666666667) internal successors, (775), 485 states have internal predecessors, (775), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:12,561 INFO L93 Difference]: Finished difference Result 1207 states and 2002 transitions. [2025-03-03 14:18:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-03-03 14:18:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:12,577 INFO L225 Difference]: With dead ends: 1207 [2025-03-03 14:18:12,577 INFO L226 Difference]: Without dead ends: 610 [2025-03-03 14:18:12,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:12,584 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 91 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:12,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5794 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:12,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-03-03 14:18:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2025-03-03 14:18:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 468 states have (on average 1.6602564102564104) internal successors, (777), 488 states have internal predecessors, (777), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2025-03-03 14:18:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 998 transitions. [2025-03-03 14:18:12,678 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 998 transitions. Word has length 67 [2025-03-03 14:18:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:12,679 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 998 transitions. [2025-03-03 14:18:12,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 998 transitions. [2025-03-03 14:18:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:18:12,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:12,686 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] [2025-03-03 14:18:12,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:18:12,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:12,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1518180835, now seen corresponding path program 1 times [2025-03-03 14:18:12,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:12,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871016112] [2025-03-03 14:18:12,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:12,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:18:12,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:18:12,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:12,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871016112] [2025-03-03 14:18:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871016112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177694991] [2025-03-03 14:18:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:12,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:12,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:12,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:12,841 INFO L87 Difference]: Start difference. First operand 608 states and 998 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:12,919 INFO L93 Difference]: Finished difference Result 1198 states and 1977 transitions. [2025-03-03 14:18:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-03 14:18:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:12,925 INFO L225 Difference]: With dead ends: 1198 [2025-03-03 14:18:12,926 INFO L226 Difference]: Without dead ends: 584 [2025-03-03 14:18:12,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:12,931 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 14 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:12,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2899 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-03-03 14:18:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2025-03-03 14:18:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 447 states have (on average 1.651006711409396) internal successors, (738), 465 states have internal predecessors, (738), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 955 transitions. [2025-03-03 14:18:12,965 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 955 transitions. Word has length 68 [2025-03-03 14:18:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:12,966 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 955 transitions. [2025-03-03 14:18:12,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 955 transitions. [2025-03-03 14:18:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:18:12,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:12,968 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] [2025-03-03 14:18:12,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:18:12,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:12,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1018638300, now seen corresponding path program 1 times [2025-03-03 14:18:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:12,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843999788] [2025-03-03 14:18:12,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:12,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:18:12,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:18:12,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:12,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:13,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843999788] [2025-03-03 14:18:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843999788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591768200] [2025-03-03 14:18:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,171 INFO L87 Difference]: Start difference. First operand 584 states and 955 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,262 INFO L93 Difference]: Finished difference Result 1161 states and 1909 transitions. [2025-03-03 14:18:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2025-03-03 14:18:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,268 INFO L225 Difference]: With dead ends: 1161 [2025-03-03 14:18:13,268 INFO L226 Difference]: Without dead ends: 578 [2025-03-03 14:18:13,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,271 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 77 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5594 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-03-03 14:18:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2025-03-03 14:18:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 459 states have internal predecessors, (725), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 942 transitions. [2025-03-03 14:18:13,298 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 942 transitions. Word has length 68 [2025-03-03 14:18:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,299 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 942 transitions. [2025-03-03 14:18:13,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 942 transitions. [2025-03-03 14:18:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 14:18:13,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,301 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] [2025-03-03 14:18:13,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:18:13,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2042983017, now seen corresponding path program 1 times [2025-03-03 14:18:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923818328] [2025-03-03 14:18:13,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 14:18:13,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 14:18:13,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923818328] [2025-03-03 14:18:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923818328] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876890200] [2025-03-03 14:18:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,479 INFO L87 Difference]: Start difference. First operand 578 states and 942 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,536 INFO L93 Difference]: Finished difference Result 1149 states and 1883 transitions. [2025-03-03 14:18:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,536 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-03-03 14:18:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,540 INFO L225 Difference]: With dead ends: 1149 [2025-03-03 14:18:13,540 INFO L226 Difference]: Without dead ends: 572 [2025-03-03 14:18:13,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,543 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 63 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5534 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-03-03 14:18:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2025-03-03 14:18:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 435 states have (on average 1.6367816091954024) internal successors, (712), 453 states have internal predecessors, (712), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 929 transitions. [2025-03-03 14:18:13,569 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 929 transitions. Word has length 69 [2025-03-03 14:18:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,569 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 929 transitions. [2025-03-03 14:18:13,569 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 929 transitions. [2025-03-03 14:18:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:18:13,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,570 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] [2025-03-03 14:18:13,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:18:13,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1026149090, now seen corresponding path program 1 times [2025-03-03 14:18:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713334655] [2025-03-03 14:18:13,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:18:13,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:18:13,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713334655] [2025-03-03 14:18:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713334655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661907744] [2025-03-03 14:18:13,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,742 INFO L87 Difference]: Start difference. First operand 572 states and 929 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:13,810 INFO L93 Difference]: Finished difference Result 1137 states and 1857 transitions. [2025-03-03 14:18:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:13,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-03 14:18:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,815 INFO L225 Difference]: With dead ends: 1137 [2025-03-03 14:18:13,815 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:13,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:13,818 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 49 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:13,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5474 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 447 states have internal predecessors, (699), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2025-03-03 14:18:13,837 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 70 [2025-03-03 14:18:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:13,837 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2025-03-03 14:18:13,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2025-03-03 14:18:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:18:13,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:13,838 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] [2025-03-03 14:18:13,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:18:13,838 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:13,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2048942762, now seen corresponding path program 1 times [2025-03-03 14:18:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:13,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341591527] [2025-03-03 14:18:13,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:13,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:18:13,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:18:13,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:13,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:13,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341591527] [2025-03-03 14:18:13,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341591527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:13,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081707528] [2025-03-03 14:18:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:13,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:13,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:13,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:13,982 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,036 INFO L93 Difference]: Finished difference Result 1125 states and 1831 transitions. [2025-03-03 14:18:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:14,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-03 14:18:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,041 INFO L225 Difference]: With dead ends: 1125 [2025-03-03 14:18:14,041 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:14,046 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 24 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5426 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.627039627039627) internal successors, (698), 447 states have internal predecessors, (698), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2025-03-03 14:18:14,068 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 70 [2025-03-03 14:18:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,069 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2025-03-03 14:18:14,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2025-03-03 14:18:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 14:18:14,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,074 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] [2025-03-03 14:18:14,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:18:14,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash -875109021, now seen corresponding path program 1 times [2025-03-03 14:18:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167160395] [2025-03-03 14:18:14,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 14:18:14,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 14:18:14,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167160395] [2025-03-03 14:18:14,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167160395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172032753] [2025-03-03 14:18:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,166 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,206 INFO L93 Difference]: Finished difference Result 1116 states and 1816 transitions. [2025-03-03 14:18:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2025-03-03 14:18:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,210 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:18:14,210 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,213 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 15 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2685 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6247086247086246) internal successors, (697), 447 states have internal predecessors, (697), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 914 transitions. [2025-03-03 14:18:14,239 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 914 transitions. Word has length 71 [2025-03-03 14:18:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,239 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 914 transitions. [2025-03-03 14:18:14,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 914 transitions. [2025-03-03 14:18:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 14:18:14,240 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,240 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] [2025-03-03 14:18:14,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:18:14,241 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,242 INFO L85 PathProgramCache]: Analyzing trace with hash -748118202, now seen corresponding path program 1 times [2025-03-03 14:18:14,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903570835] [2025-03-03 14:18:14,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 14:18:14,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 14:18:14,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:14,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903570835] [2025-03-03 14:18:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903570835] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697030285] [2025-03-03 14:18:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,330 INFO L87 Difference]: Start difference. First operand 566 states and 914 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,366 INFO L93 Difference]: Finished difference Result 1116 states and 1814 transitions. [2025-03-03 14:18:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,367 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2025-03-03 14:18:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,371 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:18:14,372 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,374 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 14 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2687 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6223776223776223) internal successors, (696), 447 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 913 transitions. [2025-03-03 14:18:14,393 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 913 transitions. Word has length 72 [2025-03-03 14:18:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,393 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 913 transitions. [2025-03-03 14:18:14,393 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 913 transitions. [2025-03-03 14:18:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-03 14:18:14,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,394 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] [2025-03-03 14:18:14,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:18:14,396 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash -657246394, now seen corresponding path program 1 times [2025-03-03 14:18:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034237677] [2025-03-03 14:18:14,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-03 14:18:14,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-03 14:18:14,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:14,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034237677] [2025-03-03 14:18:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034237677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252396902] [2025-03-03 14:18:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,505 INFO L87 Difference]: Start difference. First operand 566 states and 913 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,549 INFO L93 Difference]: Finished difference Result 1116 states and 1812 transitions. [2025-03-03 14:18:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2025-03-03 14:18:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,555 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:18:14,555 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,559 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 13 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 447 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 912 transitions. [2025-03-03 14:18:14,578 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 912 transitions. Word has length 73 [2025-03-03 14:18:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,578 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 912 transitions. [2025-03-03 14:18:14,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 912 transitions. [2025-03-03 14:18:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 14:18:14,582 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,582 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] [2025-03-03 14:18:14,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:18:14,582 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1686063927, now seen corresponding path program 1 times [2025-03-03 14:18:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931367918] [2025-03-03 14:18:14,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 14:18:14,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 14:18:14,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:14,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931367918] [2025-03-03 14:18:14,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931367918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:14,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082124528] [2025-03-03 14:18:14,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:14,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:14,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,671 INFO L87 Difference]: Start difference. First operand 566 states and 912 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,707 INFO L93 Difference]: Finished difference Result 1116 states and 1810 transitions. [2025-03-03 14:18:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2025-03-03 14:18:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,711 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:18:14,711 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:14,714 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 12 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2691 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6177156177156178) internal successors, (694), 447 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 911 transitions. [2025-03-03 14:18:14,729 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 911 transitions. Word has length 74 [2025-03-03 14:18:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,729 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 911 transitions. [2025-03-03 14:18:14,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 911 transitions. [2025-03-03 14:18:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-03 14:18:14,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,730 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] [2025-03-03 14:18:14,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:18:14,731 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 306771050, now seen corresponding path program 1 times [2025-03-03 14:18:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749570950] [2025-03-03 14:18:14,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:18:14,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:18:14,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749570950] [2025-03-03 14:18:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749570950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 14:18:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233023690] [2025-03-03 14:18:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:14,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:18:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:14,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:18:14,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:14,879 INFO L87 Difference]: Start difference. First operand 566 states and 911 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:14,946 INFO L93 Difference]: Finished difference Result 1119 states and 1810 transitions. [2025-03-03 14:18:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-03-03 14:18:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:14,950 INFO L225 Difference]: With dead ends: 1119 [2025-03-03 14:18:14,950 INFO L226 Difference]: Without dead ends: 566 [2025-03-03 14:18:14,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:18:14,952 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 12 mSDsluCounter, 5363 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6261 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-03 14:18:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-03 14:18:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6153846153846154) internal successors, (693), 447 states have internal predecessors, (693), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:18:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 910 transitions. [2025-03-03 14:18:14,967 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 910 transitions. Word has length 75 [2025-03-03 14:18:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:14,967 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 910 transitions. [2025-03-03 14:18:14,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 910 transitions. [2025-03-03 14:18:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-03 14:18:14,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:14,968 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] [2025-03-03 14:18:14,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 14:18:14,968 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:14,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1229454633, now seen corresponding path program 1 times [2025-03-03 14:18:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892333470] [2025-03-03 14:18:14,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:14,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:18:14,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:18:14,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:14,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892333470] [2025-03-03 14:18:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892333470] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144557783] [2025-03-03 14:18:15,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:15,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:15,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:18:15,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:18:15,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:18:15,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:15,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:15,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:15,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:15,441 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144557783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:15,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500549199] [2025-03-03 14:18:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:15,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:15,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:15,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:15,442 INFO L87 Difference]: Start difference. First operand 566 states and 910 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:15,489 INFO L93 Difference]: Finished difference Result 1609 states and 2618 transitions. [2025-03-03 14:18:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-03-03 14:18:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:15,495 INFO L225 Difference]: With dead ends: 1609 [2025-03-03 14:18:15,495 INFO L226 Difference]: Without dead ends: 1061 [2025-03-03 14:18:15,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:15,498 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 872 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:15,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 2349 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2025-03-03 14:18:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1046. [2025-03-03 14:18:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 800 states have (on average 1.6275) internal successors, (1302), 835 states have internal predecessors, (1302), 195 states have call successors, (195), 51 states have call predecessors, (195), 50 states have return successors, (197), 187 states have call predecessors, (197), 192 states have call successors, (197) [2025-03-03 14:18:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1694 transitions. [2025-03-03 14:18:15,528 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1694 transitions. Word has length 75 [2025-03-03 14:18:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:15,529 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1694 transitions. [2025-03-03 14:18:15,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1694 transitions. [2025-03-03 14:18:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-03 14:18:15,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:15,530 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] [2025-03-03 14:18:15,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:18:15,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:18:15,734 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:15,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash -659424735, now seen corresponding path program 1 times [2025-03-03 14:18:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956147159] [2025-03-03 14:18:15,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:15,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:15,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:18:15,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:18:15,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:15,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:15,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956147159] [2025-03-03 14:18:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956147159] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133255196] [2025-03-03 14:18:15,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:15,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:15,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:18:16,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:18:16,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:18:16,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:16,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:16,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:16,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:16,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133255196] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496165627] [2025-03-03 14:18:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:16,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:16,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:16,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:16,220 INFO L87 Difference]: Start difference. First operand 1046 states and 1694 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:16,288 INFO L93 Difference]: Finished difference Result 2569 states and 4188 transitions. [2025-03-03 14:18:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2025-03-03 14:18:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:16,300 INFO L225 Difference]: With dead ends: 2569 [2025-03-03 14:18:16,300 INFO L226 Difference]: Without dead ends: 1541 [2025-03-03 14:18:16,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:16,306 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 872 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:16,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1773 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2025-03-03 14:18:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1493. [2025-03-03 14:18:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1144 states have (on average 1.6398601398601398) internal successors, (1876), 1196 states have internal predecessors, (1876), 277 states have call successors, (277), 71 states have call predecessors, (277), 71 states have return successors, (284), 267 states have call predecessors, (284), 274 states have call successors, (284) [2025-03-03 14:18:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2437 transitions. [2025-03-03 14:18:16,363 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2437 transitions. Word has length 76 [2025-03-03 14:18:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:16,364 INFO L471 AbstractCegarLoop]: Abstraction has 1493 states and 2437 transitions. [2025-03-03 14:18:16,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:18:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2437 transitions. [2025-03-03 14:18:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-03 14:18:16,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:16,365 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] [2025-03-03 14:18:16,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 14:18:16,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 14:18:16,566 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:16,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2012190947, now seen corresponding path program 1 times [2025-03-03 14:18:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202063851] [2025-03-03 14:18:16,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:16,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:16,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-03 14:18:16,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-03 14:18:16,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:16,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:16,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:16,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202063851] [2025-03-03 14:18:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202063851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484237542] [2025-03-03 14:18:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:16,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:16,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:16,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:16,714 INFO L87 Difference]: Start difference. First operand 1493 states and 2437 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:18:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:17,286 INFO L93 Difference]: Finished difference Result 4415 states and 7354 transitions. [2025-03-03 14:18:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2025-03-03 14:18:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:17,309 INFO L225 Difference]: With dead ends: 4415 [2025-03-03 14:18:17,310 INFO L226 Difference]: Without dead ends: 2940 [2025-03-03 14:18:17,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:17,319 INFO L435 NwaCegarLoop]: 1047 mSDtfsCounter, 903 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4800 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:17,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 4800 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2025-03-03 14:18:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2893. [2025-03-03 14:18:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2221 states have (on average 1.6434038721296713) internal successors, (3650), 2321 states have internal predecessors, (3650), 533 states have call successors, (533), 136 states have call predecessors, (533), 138 states have return successors, (639), 519 states have call predecessors, (639), 529 states have call successors, (639) [2025-03-03 14:18:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4822 transitions. [2025-03-03 14:18:17,467 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4822 transitions. Word has length 78 [2025-03-03 14:18:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:17,468 INFO L471 AbstractCegarLoop]: Abstraction has 2893 states and 4822 transitions. [2025-03-03 14:18:17,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:18:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4822 transitions. [2025-03-03 14:18:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:18:17,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:17,470 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] [2025-03-03 14:18:17,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 14:18:17,470 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:17,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 227203322, now seen corresponding path program 1 times [2025-03-03 14:18:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256752103] [2025-03-03 14:18:17,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:17,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:17,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:17,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:17,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256752103] [2025-03-03 14:18:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256752103] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033800555] [2025-03-03 14:18:17,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:17,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:17,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:17,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:17,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:18:17,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:17,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:17,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:17,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:17,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:18:17,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:18,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:18,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033800555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:18,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:18:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138238782] [2025-03-03 14:18:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:18,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:18,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:18,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:18:18,066 INFO L87 Difference]: Start difference. First operand 2893 states and 4822 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 14:18:18,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:18,842 INFO L93 Difference]: Finished difference Result 7826 states and 13231 transitions. [2025-03-03 14:18:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2025-03-03 14:18:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:18,879 INFO L225 Difference]: With dead ends: 7826 [2025-03-03 14:18:18,880 INFO L226 Difference]: Without dead ends: 4951 [2025-03-03 14:18:18,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:18:18,900 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 767 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:18,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 4318 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:18:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2025-03-03 14:18:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4908. [2025-03-03 14:18:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 3762 states have (on average 1.5967570441254653) internal successors, (6007), 3928 states have internal predecessors, (6007), 894 states have call successors, (894), 244 states have call predecessors, (894), 251 states have return successors, (1180), 875 states have call predecessors, (1180), 888 states have call successors, (1180) [2025-03-03 14:18:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8081 transitions. [2025-03-03 14:18:19,114 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8081 transitions. Word has length 79 [2025-03-03 14:18:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:19,114 INFO L471 AbstractCegarLoop]: Abstraction has 4908 states and 8081 transitions. [2025-03-03 14:18:19,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 14:18:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8081 transitions. [2025-03-03 14:18:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:18:19,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:19,115 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] [2025-03-03 14:18:19,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:19,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:19,320 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:19,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1881271010, now seen corresponding path program 1 times [2025-03-03 14:18:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905740657] [2025-03-03 14:18:19,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:19,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:19,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:19,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:19,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:19,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:19,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905740657] [2025-03-03 14:18:19,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905740657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:19,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:19,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:19,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472596508] [2025-03-03 14:18:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:19,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:19,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:19,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:19,408 INFO L87 Difference]: Start difference. First operand 4908 states and 8081 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:18:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:19,604 INFO L93 Difference]: Finished difference Result 9822 states and 16327 transitions. [2025-03-03 14:18:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-03-03 14:18:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:19,644 INFO L225 Difference]: With dead ends: 9822 [2025-03-03 14:18:19,644 INFO L226 Difference]: Without dead ends: 4932 [2025-03-03 14:18:19,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:19,672 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 12 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:19,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2654 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2025-03-03 14:18:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4916. [2025-03-03 14:18:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 3768 states have (on average 1.595276008492569) internal successors, (6011), 3934 states have internal predecessors, (6011), 894 states have call successors, (894), 248 states have call predecessors, (894), 253 states have return successors, (1167), 873 states have call predecessors, (1167), 888 states have call successors, (1167) [2025-03-03 14:18:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 8072 transitions. [2025-03-03 14:18:19,941 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 8072 transitions. Word has length 79 [2025-03-03 14:18:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:19,941 INFO L471 AbstractCegarLoop]: Abstraction has 4916 states and 8072 transitions. [2025-03-03 14:18:19,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:18:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 8072 transitions. [2025-03-03 14:18:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:18:19,943 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:19,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:19,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:18:19,943 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:19,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1817622694, now seen corresponding path program 1 times [2025-03-03 14:18:19,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:19,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918571642] [2025-03-03 14:18:19,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:19,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:19,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:18:19,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:18:19,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:19,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:18:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918571642] [2025-03-03 14:18:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918571642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:20,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429693809] [2025-03-03 14:18:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:20,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:20,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:20,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:20,078 INFO L87 Difference]: Start difference. First operand 4916 states and 8072 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:18:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:20,807 INFO L93 Difference]: Finished difference Result 14699 states and 24974 transitions. [2025-03-03 14:18:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2025-03-03 14:18:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:20,887 INFO L225 Difference]: With dead ends: 14699 [2025-03-03 14:18:20,888 INFO L226 Difference]: Without dead ends: 9801 [2025-03-03 14:18:20,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:20,911 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 900 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:20,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 4538 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2025-03-03 14:18:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 9732. [2025-03-03 14:18:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9732 states, 7466 states have (on average 1.5930886686311279) internal successors, (11894), 7792 states have internal predecessors, (11894), 1760 states have call successors, (1760), 490 states have call predecessors, (1760), 505 states have return successors, (2771), 1729 states have call predecessors, (2771), 1750 states have call successors, (2771) [2025-03-03 14:18:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9732 states to 9732 states and 16425 transitions. [2025-03-03 14:18:21,339 INFO L78 Accepts]: Start accepts. Automaton has 9732 states and 16425 transitions. Word has length 87 [2025-03-03 14:18:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:21,339 INFO L471 AbstractCegarLoop]: Abstraction has 9732 states and 16425 transitions. [2025-03-03 14:18:21,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:18:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 9732 states and 16425 transitions. [2025-03-03 14:18:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:18:21,341 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:21,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:21,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:18:21,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:21,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash 271349074, now seen corresponding path program 1 times [2025-03-03 14:18:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:21,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508189697] [2025-03-03 14:18:21,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:21,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:18:21,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:18:21,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:21,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:18:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508189697] [2025-03-03 14:18:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508189697] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:21,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:21,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851741516] [2025-03-03 14:18:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:21,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:21,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:21,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:21,410 INFO L87 Difference]: Start difference. First operand 9732 states and 16425 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:18:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:21,846 INFO L93 Difference]: Finished difference Result 19518 states and 33403 transitions. [2025-03-03 14:18:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:21,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-03-03 14:18:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:21,912 INFO L225 Difference]: With dead ends: 19518 [2025-03-03 14:18:21,913 INFO L226 Difference]: Without dead ends: 9804 [2025-03-03 14:18:21,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:21,953 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 12 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:21,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2648 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9804 states. [2025-03-03 14:18:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9804 to 9772. [2025-03-03 14:18:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9772 states, 7502 states have (on average 1.5907757931218343) internal successors, (11934), 7820 states have internal predecessors, (11934), 1760 states have call successors, (1760), 506 states have call predecessors, (1760), 509 states have return successors, (2751), 1725 states have call predecessors, (2751), 1750 states have call successors, (2751) [2025-03-03 14:18:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9772 states to 9772 states and 16445 transitions. [2025-03-03 14:18:22,484 INFO L78 Accepts]: Start accepts. Automaton has 9772 states and 16445 transitions. Word has length 88 [2025-03-03 14:18:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:22,485 INFO L471 AbstractCegarLoop]: Abstraction has 9772 states and 16445 transitions. [2025-03-03 14:18:22,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:18:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9772 states and 16445 transitions. [2025-03-03 14:18:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:18:22,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:22,488 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:22,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:18:22,488 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:22,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1488325521, now seen corresponding path program 1 times [2025-03-03 14:18:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091983389] [2025-03-03 14:18:22,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:22,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:18:22,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:18:22,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:22,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:22,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:22,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091983389] [2025-03-03 14:18:22,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091983389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:22,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:22,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:22,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810879798] [2025-03-03 14:18:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:22,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:22,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:22,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:22,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:22,644 INFO L87 Difference]: Start difference. First operand 9772 states and 16445 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:18:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:23,741 INFO L93 Difference]: Finished difference Result 29339 states and 51939 transitions. [2025-03-03 14:18:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2025-03-03 14:18:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:23,920 INFO L225 Difference]: With dead ends: 29339 [2025-03-03 14:18:23,920 INFO L226 Difference]: Without dead ends: 19585 [2025-03-03 14:18:23,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:23,978 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 895 mSDsluCounter, 3666 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:23,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4678 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19585 states. [2025-03-03 14:18:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19585 to 19484. [2025-03-03 14:18:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19484 states, 14964 states have (on average 1.5880780539962578) internal successors, (23764), 15594 states have internal predecessors, (23764), 3498 states have call successors, (3498), 1006 states have call predecessors, (3498), 1021 states have return successors, (6933), 3443 states have call predecessors, (6933), 3480 states have call successors, (6933) [2025-03-03 14:18:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19484 states to 19484 states and 34195 transitions. [2025-03-03 14:18:24,836 INFO L78 Accepts]: Start accepts. Automaton has 19484 states and 34195 transitions. Word has length 97 [2025-03-03 14:18:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:24,837 INFO L471 AbstractCegarLoop]: Abstraction has 19484 states and 34195 transitions. [2025-03-03 14:18:24,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:18:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 19484 states and 34195 transitions. [2025-03-03 14:18:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:18:24,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:24,839 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:24,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:18:24,839 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:24,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1255156508, now seen corresponding path program 1 times [2025-03-03 14:18:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155845732] [2025-03-03 14:18:24,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:24,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:18:24,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:18:24,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:24,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:18:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155845732] [2025-03-03 14:18:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155845732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:24,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523374850] [2025-03-03 14:18:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:24,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:24,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:24,910 INFO L87 Difference]: Start difference. First operand 19484 states and 34195 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:18:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:25,713 INFO L93 Difference]: Finished difference Result 39094 states and 70185 transitions. [2025-03-03 14:18:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:25,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-03-03 14:18:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:25,997 INFO L225 Difference]: With dead ends: 39094 [2025-03-03 14:18:25,998 INFO L226 Difference]: Without dead ends: 19628 [2025-03-03 14:18:26,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:26,108 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 11 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:26,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2648 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19628 states. [2025-03-03 14:18:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19628 to 19564. [2025-03-03 14:18:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19564 states, 15036 states have (on average 1.5857940941739825) internal successors, (23844), 15666 states have internal predecessors, (23844), 3498 states have call successors, (3498), 1022 states have call predecessors, (3498), 1029 states have return successors, (6905), 3435 states have call predecessors, (6905), 3480 states have call successors, (6905) [2025-03-03 14:18:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19564 states to 19564 states and 34247 transitions. [2025-03-03 14:18:27,086 INFO L78 Accepts]: Start accepts. Automaton has 19564 states and 34247 transitions. Word has length 98 [2025-03-03 14:18:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:27,086 INFO L471 AbstractCegarLoop]: Abstraction has 19564 states and 34247 transitions. [2025-03-03 14:18:27,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:18:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19564 states and 34247 transitions. [2025-03-03 14:18:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-03 14:18:27,088 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:27,089 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:27,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 14:18:27,089 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:27,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2047065843, now seen corresponding path program 1 times [2025-03-03 14:18:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044739452] [2025-03-03 14:18:27,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:27,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-03 14:18:27,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-03 14:18:27,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:27,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:18:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044739452] [2025-03-03 14:18:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044739452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:27,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:27,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687892793] [2025-03-03 14:18:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:27,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:27,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:27,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:27,233 INFO L87 Difference]: Start difference. First operand 19564 states and 34247 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-03 14:18:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:29,135 INFO L93 Difference]: Finished difference Result 58835 states and 111533 transitions. [2025-03-03 14:18:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2025-03-03 14:18:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:29,461 INFO L225 Difference]: With dead ends: 58835 [2025-03-03 14:18:29,462 INFO L226 Difference]: Without dead ends: 39289 [2025-03-03 14:18:29,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:29,577 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 891 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:29,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 4690 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39289 states. [2025-03-03 14:18:30,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39289 to 39124. [2025-03-03 14:18:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39124 states, 30074 states have (on average 1.583627053268604) internal successors, (47626), 31328 states have internal predecessors, (47626), 6980 states have call successors, (6980), 2038 states have call predecessors, (6980), 2069 states have return successors, (18771), 6877 states have call predecessors, (18771), 6946 states have call successors, (18771) [2025-03-03 14:18:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39124 states to 39124 states and 73377 transitions. [2025-03-03 14:18:31,222 INFO L78 Accepts]: Start accepts. Automaton has 39124 states and 73377 transitions. Word has length 108 [2025-03-03 14:18:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:31,223 INFO L471 AbstractCegarLoop]: Abstraction has 39124 states and 73377 transitions. [2025-03-03 14:18:31,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-03 14:18:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 39124 states and 73377 transitions. [2025-03-03 14:18:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-03 14:18:31,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:31,225 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:31,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 14:18:31,225 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:31,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -246053363, now seen corresponding path program 1 times [2025-03-03 14:18:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:31,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052342538] [2025-03-03 14:18:31,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:31,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-03 14:18:31,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-03 14:18:31,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:31,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:18:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052342538] [2025-03-03 14:18:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052342538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:31,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:31,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:31,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067267570] [2025-03-03 14:18:31,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:31,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:31,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:31,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:31,294 INFO L87 Difference]: Start difference. First operand 39124 states and 73377 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:18:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:33,403 INFO L93 Difference]: Finished difference Result 78550 states and 152979 transitions. [2025-03-03 14:18:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:33,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-03-03 14:18:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:33,770 INFO L225 Difference]: With dead ends: 78550 [2025-03-03 14:18:33,770 INFO L226 Difference]: Without dead ends: 39444 [2025-03-03 14:18:34,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:34,074 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 10 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:34,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2648 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39444 states. [2025-03-03 14:18:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39444 to 39316. [2025-03-03 14:18:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39316 states, 30250 states have (on average 1.5807603305785125) internal successors, (47818), 31504 states have internal predecessors, (47818), 6980 states have call successors, (6980), 2070 states have call predecessors, (6980), 2085 states have return successors, (18739), 6861 states have call predecessors, (18739), 6946 states have call successors, (18739) [2025-03-03 14:18:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39316 states to 39316 states and 73537 transitions. [2025-03-03 14:18:36,170 INFO L78 Accepts]: Start accepts. Automaton has 39316 states and 73537 transitions. Word has length 109 [2025-03-03 14:18:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:36,181 INFO L471 AbstractCegarLoop]: Abstraction has 39316 states and 73537 transitions. [2025-03-03 14:18:36,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:18:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 39316 states and 73537 transitions. [2025-03-03 14:18:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-03 14:18:36,183 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:36,183 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:36,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 14:18:36,183 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:36,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1670970257, now seen corresponding path program 1 times [2025-03-03 14:18:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36069669] [2025-03-03 14:18:36,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:36,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:36,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:18:36,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:18:36,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:36,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-03 14:18:36,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:36,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36069669] [2025-03-03 14:18:36,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36069669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:36,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036022442] [2025-03-03 14:18:36,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:36,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:36,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:36,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:18:36,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:18:36,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:18:36,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:18:36,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:36,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:36,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:18:36,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-03 14:18:36,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036022442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:36,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:36,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-03 14:18:36,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588058663] [2025-03-03 14:18:36,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:36,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:18:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:36,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:18:36,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-03-03 14:18:36,844 INFO L87 Difference]: Start difference. First operand 39316 states and 73537 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 14:18:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:44,669 INFO L93 Difference]: Finished difference Result 140449 states and 287234 transitions. [2025-03-03 14:18:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:18:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 148 [2025-03-03 14:18:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:45,560 INFO L225 Difference]: With dead ends: 140449 [2025-03-03 14:18:45,560 INFO L226 Difference]: Without dead ends: 101151 [2025-03-03 14:18:45,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:18:45,915 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 3179 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 6655 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 7362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 6655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:45,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3361 Valid, 2460 Invalid, 7362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 6655 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-03 14:18:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101151 states. [2025-03-03 14:18:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101151 to 99878. [2025-03-03 14:18:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99878 states, 76952 states have (on average 1.5745139827424888) internal successors, (121162), 79990 states have internal predecessors, (121162), 17480 states have call successors, (17480), 5158 states have call predecessors, (17480), 5445 states have return successors, (59717), 17465 states have call predecessors, (59717), 17414 states have call successors, (59717) [2025-03-03 14:18:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99878 states to 99878 states and 198359 transitions. [2025-03-03 14:18:51,348 INFO L78 Accepts]: Start accepts. Automaton has 99878 states and 198359 transitions. Word has length 148 [2025-03-03 14:18:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:51,349 INFO L471 AbstractCegarLoop]: Abstraction has 99878 states and 198359 transitions. [2025-03-03 14:18:51,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 14:18:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 99878 states and 198359 transitions. [2025-03-03 14:18:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-03 14:18:51,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:51,350 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:51,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 14:18:51,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:51,551 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:51,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1566969906, now seen corresponding path program 1 times [2025-03-03 14:18:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:51,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303826183] [2025-03-03 14:18:51,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:51,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:51,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:18:51,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:18:51,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:51,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-03 14:18:51,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:51,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303826183] [2025-03-03 14:18:51,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303826183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:51,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:51,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:51,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476716088] [2025-03-03 14:18:51,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:51,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:51,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:51,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:51,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:51,677 INFO L87 Difference]: Start difference. First operand 99878 states and 198359 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-03 14:18:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:57,921 INFO L93 Difference]: Finished difference Result 202946 states and 406538 transitions. [2025-03-03 14:18:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:57,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2025-03-03 14:18:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:58,777 INFO L225 Difference]: With dead ends: 202946 [2025-03-03 14:18:58,777 INFO L226 Difference]: Without dead ends: 103038 [2025-03-03 14:18:59,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:18:59,504 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 743 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:59,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 4327 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103038 states.