./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product25.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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:33:07,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:33:07,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:33:07,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:33:07,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:33:07,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:33:07,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:33:07,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:33:07,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:33:07,946 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:33:07,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:33:07,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:33:07,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:33:07,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:33:07,946 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:33:07,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:33:07,947 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:33:07,948 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:33:07,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:33:07,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:33:07,948 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 -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2025-03-16 18:33:08,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:33:08,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:33:08,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:33:08,159 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:33:08,159 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:33:08,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2025-03-16 18:33:09,284 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430d5494/180d7f68a345443d9b8be8390ff9d062/FLAGde5cf4b59 [2025-03-16 18:33:09,599 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:33:09,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2025-03-16 18:33:09,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430d5494/180d7f68a345443d9b8be8390ff9d062/FLAGde5cf4b59 [2025-03-16 18:33:09,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7430d5494/180d7f68a345443d9b8be8390ff9d062 [2025-03-16 18:33:09,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:33:09,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:33:09,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:33:09,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:33:09,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:33:09,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:33:09" (1/1) ... [2025-03-16 18:33:09,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140d6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:09, skipping insertion in model container [2025-03-16 18:33:09,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:33:09" (1/1) ... [2025-03-16 18:33:09,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:33:10,101 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_spec1_product25.cil.c[13407,13420] [2025-03-16 18:33:10,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:33:10,243 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:33:10,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [553] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [916] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1099] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1770] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1783] [2025-03-16 18:33:10,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1903] [2025-03-16 18:33:10,270 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_spec1_product25.cil.c[13407,13420] [2025-03-16 18:33:10,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:33:10,350 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:33:10,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10 WrapperNode [2025-03-16 18:33:10,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:33:10,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:33:10,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:33:10,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:33:10,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,398 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 831 [2025-03-16 18:33:10,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:33:10,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:33:10,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:33:10,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:33:10,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,437 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:33:10,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,461 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:33:10,477 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:33:10,478 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:33:10,478 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:33:10,479 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (1/1) ... [2025-03-16 18:33:10,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:33:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:10,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:33:10,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:33:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-16 18:33:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-16 18:33:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:33:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:33:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:33:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-16 18:33:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-16 18:33:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:33:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:33:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:33:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:33:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:33:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:33:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:33:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:33:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:33:10,520 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:33:10,520 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-16 18:33:10,521 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-16 18:33:10,521 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:33:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:33:10,522 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:33:10,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:33:10,523 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:33:10,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:33:10,524 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:33:10,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:33:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:33:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:33:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:33:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:33:10,525 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:33:10,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:33:10,665 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:33:10,666 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:33:10,725 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1900: #res := ~retValue_acc~12; [2025-03-16 18:33:10,743 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1822: #res := ~retValue_acc~10; [2025-03-16 18:33:10,745 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1975: #res := ~retValue_acc~13; [2025-03-16 18:33:10,991 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2685: #res := ~retValue_acc~21; [2025-03-16 18:33:11,043 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2789: #res := ~retValue_acc~24; [2025-03-16 18:33:11,053 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1861: #res := ~retValue_acc~11; [2025-03-16 18:33:11,097 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2240-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-16 18:33:11,146 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2320-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-16 18:33:11,146 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2333-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-16 18:33:11,280 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2191-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~16#1; [2025-03-16 18:33:11,280 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2775-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~23#1; [2025-03-16 18:33:11,280 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2148-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~14#1; [2025-03-16 18:33:11,329 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1456: #res := ~retValue_acc~8; [2025-03-16 18:33:11,382 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L83-1: valid_product_#res#1 := valid_product_~retValue_acc~1#1; [2025-03-16 18:33:11,382 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L913-1: main_#res#1 := main_~retValue_acc~6#1; [2025-03-16 18:33:11,390 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1216: #res := ~retValue_acc~7; [2025-03-16 18:33:11,392 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2157: #res := ~retValue_acc~15; [2025-03-16 18:33:11,396 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1767: #res := ~retValue_acc~9; [2025-03-16 18:33:11,508 INFO L? ?]: Removed 438 outVars from TransFormulas that were not future-live. [2025-03-16 18:33:11,509 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:33:11,522 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:33:11,524 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:33:11,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:33:11 BoogieIcfgContainer [2025-03-16 18:33:11,524 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:33:11,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:33:11,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:33:11,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:33:11,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:33:09" (1/3) ... [2025-03-16 18:33:11,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da54d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:33:11, skipping insertion in model container [2025-03-16 18:33:11,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:33:10" (2/3) ... [2025-03-16 18:33:11,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da54d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:33:11, skipping insertion in model container [2025-03-16 18:33:11,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:33:11" (3/3) ... [2025-03-16 18:33:11,530 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2025-03-16 18:33:11,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:33:11,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product25.cil.c that has 23 procedures, 539 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:33:11,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:33:11,611 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;@766bc05a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:33:11,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:33:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 424 states have (on average 1.7193396226415094) internal successors, (729), 445 states have internal predecessors, (729), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2025-03-16 18:33:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 18:33:11,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:11,634 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:11,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:11,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1609942119, now seen corresponding path program 1 times [2025-03-16 18:33:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78581193] [2025-03-16 18:33:11,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:11,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:11,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 18:33:11,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 18:33:11,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:11,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:12,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78581193] [2025-03-16 18:33:12,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78581193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634372079] [2025-03-16 18:33:12,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:12,080 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) [2025-03-16 18:33:12,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:33:12,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 18:33:12,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 18:33:12,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:12,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:12,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 18:33:12,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:12,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:12,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634372079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:12,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:12,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-16 18:33:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822230284] [2025-03-16 18:33:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:12,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 18:33:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:12,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 18:33:12,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:12,457 INFO L87 Difference]: Start difference. First operand has 539 states, 424 states have (on average 1.7193396226415094) internal successors, (729), 445 states have internal predecessors, (729), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:12,503 INFO L93 Difference]: Finished difference Result 559 states and 940 transitions. [2025-03-16 18:33:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 18:33:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 92 [2025-03-16 18:33:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:12,518 INFO L225 Difference]: With dead ends: 559 [2025-03-16 18:33:12,518 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:33:12,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:12,523 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:12,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:33:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:33:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 419 states have (on average 1.7183770883054892) internal successors, (720), 438 states have internal predecessors, (720), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2025-03-16 18:33:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 897 transitions. [2025-03-16 18:33:12,589 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 897 transitions. Word has length 92 [2025-03-16 18:33:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:12,590 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 897 transitions. [2025-03-16 18:33:12,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 897 transitions. [2025-03-16 18:33:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 18:33:12,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:12,597 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:12,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:12,798 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,SelfDestructingSolverStorable0 [2025-03-16 18:33:12,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:12,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:12,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1349341274, now seen corresponding path program 1 times [2025-03-16 18:33:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779715992] [2025-03-16 18:33:12,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:12,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:33:12,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:33:12,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:12,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779715992] [2025-03-16 18:33:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779715992] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065438271] [2025-03-16 18:33:12,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:12,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:12,971 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) [2025-03-16 18:33:12,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:33:13,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:33:13,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:33:13,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:13,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:13,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:13,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:13,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:13,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065438271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:13,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:13,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 18:33:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564770284] [2025-03-16 18:33:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:13,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:33:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:13,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:33:13,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:13,314 INFO L87 Difference]: Start difference. First operand 532 states and 897 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:13,418 INFO L93 Difference]: Finished difference Result 1431 states and 2432 transitions. [2025-03-16 18:33:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:33:13,419 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 93 [2025-03-16 18:33:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:13,428 INFO L225 Difference]: With dead ends: 1431 [2025-03-16 18:33:13,428 INFO L226 Difference]: Without dead ends: 979 [2025-03-16 18:33:13,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:13,435 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 892 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:13,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1680 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2025-03-16 18:33:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 959. [2025-03-16 18:33:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 756 states have (on average 1.7182539682539681) internal successors, (1299), 788 states have internal predecessors, (1299), 165 states have call successors, (165), 37 states have call predecessors, (165), 37 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1630 transitions. [2025-03-16 18:33:13,503 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1630 transitions. Word has length 93 [2025-03-16 18:33:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:13,505 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1630 transitions. [2025-03-16 18:33:13,505 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1630 transitions. [2025-03-16 18:33:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 18:33:13,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:13,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:13,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:13,709 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,SelfDestructingSolverStorable1 [2025-03-16 18:33:13,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:13,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -907569733, now seen corresponding path program 1 times [2025-03-16 18:33:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941691990] [2025-03-16 18:33:13,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:13,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:13,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:33:13,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:33:13,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:13,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941691990] [2025-03-16 18:33:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941691990] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590072869] [2025-03-16 18:33:13,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:13,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:13,860 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) [2025-03-16 18:33:13,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:33:13,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:33:14,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:33:14,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:14,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:14,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:14,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:14,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590072869] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:14,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:14,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774127162] [2025-03-16 18:33:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:14,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:14,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:14,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:14,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,178 INFO L87 Difference]: Start difference. First operand 959 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:14,275 INFO L93 Difference]: Finished difference Result 1914 states and 3257 transitions. [2025-03-16 18:33:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:14,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2025-03-16 18:33:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:14,281 INFO L225 Difference]: With dead ends: 1914 [2025-03-16 18:33:14,281 INFO L226 Difference]: Without dead ends: 959 [2025-03-16 18:33:14,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,286 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 5 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:14,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2649 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-03-16 18:33:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2025-03-16 18:33:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 756 states have (on average 1.716931216931217) internal successors, (1298), 788 states have internal predecessors, (1298), 165 states have call successors, (165), 37 states have call predecessors, (165), 37 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1629 transitions. [2025-03-16 18:33:14,327 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1629 transitions. Word has length 93 [2025-03-16 18:33:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:14,327 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1629 transitions. [2025-03-16 18:33:14,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1629 transitions. [2025-03-16 18:33:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-16 18:33:14,330 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:14,330 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:14,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:14,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:14,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:14,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 379782881, now seen corresponding path program 1 times [2025-03-16 18:33:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036123758] [2025-03-16 18:33:14,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:14,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 18:33:14,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 18:33:14,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:14,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036123758] [2025-03-16 18:33:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036123758] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736274126] [2025-03-16 18:33:14,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:14,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:14,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:14,637 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) [2025-03-16 18:33:14,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:33:14,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-16 18:33:14,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-16 18:33:14,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:14,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:14,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:14,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:14,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736274126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843894418] [2025-03-16 18:33:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:14,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:14,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:14,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,895 INFO L87 Difference]: Start difference. First operand 959 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:14,943 INFO L93 Difference]: Finished difference Result 1914 states and 3255 transitions. [2025-03-16 18:33:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:14,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2025-03-16 18:33:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:14,950 INFO L225 Difference]: With dead ends: 1914 [2025-03-16 18:33:14,950 INFO L226 Difference]: Without dead ends: 959 [2025-03-16 18:33:14,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:14,954 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 4 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:14,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-03-16 18:33:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2025-03-16 18:33:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 756 states have (on average 1.7156084656084656) internal successors, (1297), 788 states have internal predecessors, (1297), 165 states have call successors, (165), 37 states have call predecessors, (165), 37 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1628 transitions. [2025-03-16 18:33:14,984 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1628 transitions. Word has length 95 [2025-03-16 18:33:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:14,985 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1628 transitions. [2025-03-16 18:33:14,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1628 transitions. [2025-03-16 18:33:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-16 18:33:14,987 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:14,988 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:14,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:15,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:15,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -987206693, now seen corresponding path program 1 times [2025-03-16 18:33:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607065361] [2025-03-16 18:33:15,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:15,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 18:33:15,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 18:33:15,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607065361] [2025-03-16 18:33:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607065361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338887034] [2025-03-16 18:33:15,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:15,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:15,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:33:15,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-16 18:33:15,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-16 18:33:15,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:15,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:15,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338887034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589116382] [2025-03-16 18:33:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:15,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:15,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:15,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:15,563 INFO L87 Difference]: Start difference. First operand 959 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:15,624 INFO L93 Difference]: Finished difference Result 1921 states and 3262 transitions. [2025-03-16 18:33:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2025-03-16 18:33:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:15,630 INFO L225 Difference]: With dead ends: 1921 [2025-03-16 18:33:15,630 INFO L226 Difference]: Without dead ends: 968 [2025-03-16 18:33:15,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:15,635 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 13 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:15,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2646 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-03-16 18:33:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2025-03-16 18:33:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 764 states have (on average 1.713350785340314) internal successors, (1309), 796 states have internal predecessors, (1309), 165 states have call successors, (165), 38 states have call predecessors, (165), 38 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1640 transitions. [2025-03-16 18:33:15,665 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1640 transitions. Word has length 97 [2025-03-16 18:33:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:15,665 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1640 transitions. [2025-03-16 18:33:15,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1640 transitions. [2025-03-16 18:33:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 18:33:15,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:15,668 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:15,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:15,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:15,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1128486018, now seen corresponding path program 1 times [2025-03-16 18:33:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911643953] [2025-03-16 18:33:15,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:15,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:33:15,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:33:15,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:15,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:15,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911643953] [2025-03-16 18:33:15,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911643953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:15,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168513719] [2025-03-16 18:33:15,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:15,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:15,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:15,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:15,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:33:16,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:33:16,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:33:16,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:16,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:16,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:16,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168513719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:16,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727334573] [2025-03-16 18:33:16,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:16,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:16,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:16,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:16,260 INFO L87 Difference]: Start difference. First operand 968 states and 1640 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:16,324 INFO L93 Difference]: Finished difference Result 1923 states and 3263 transitions. [2025-03-16 18:33:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-03-16 18:33:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:16,331 INFO L225 Difference]: With dead ends: 1923 [2025-03-16 18:33:16,331 INFO L226 Difference]: Without dead ends: 968 [2025-03-16 18:33:16,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:16,336 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 11 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:16,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2646 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-03-16 18:33:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2025-03-16 18:33:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 764 states have (on average 1.712041884816754) internal successors, (1308), 796 states have internal predecessors, (1308), 165 states have call successors, (165), 38 states have call predecessors, (165), 38 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1639 transitions. [2025-03-16 18:33:16,366 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1639 transitions. Word has length 98 [2025-03-16 18:33:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:16,366 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1639 transitions. [2025-03-16 18:33:16,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1639 transitions. [2025-03-16 18:33:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-16 18:33:16,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:16,368 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:16,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 18:33:16,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:16,569 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:16,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1207692568, now seen corresponding path program 1 times [2025-03-16 18:33:16,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:16,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993308603] [2025-03-16 18:33:16,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:16,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:16,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 18:33:16,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 18:33:16,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993308603] [2025-03-16 18:33:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993308603] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625931842] [2025-03-16 18:33:16,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:16,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:16,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:16,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:16,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 18:33:16,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-16 18:33:16,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-16 18:33:16,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:16,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:16,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:16,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:16,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:16,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625931842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:16,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:16,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:16,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659014114] [2025-03-16 18:33:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:16,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:16,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:16,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:16,933 INFO L87 Difference]: Start difference. First operand 968 states and 1639 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:17,001 INFO L93 Difference]: Finished difference Result 1923 states and 3262 transitions. [2025-03-16 18:33:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:17,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2025-03-16 18:33:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:17,008 INFO L225 Difference]: With dead ends: 1923 [2025-03-16 18:33:17,008 INFO L226 Difference]: Without dead ends: 968 [2025-03-16 18:33:17,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:17,013 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 10 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:17,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2646 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-03-16 18:33:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2025-03-16 18:33:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 764 states have (on average 1.7107329842931938) internal successors, (1307), 796 states have internal predecessors, (1307), 165 states have call successors, (165), 38 states have call predecessors, (165), 38 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1638 transitions. [2025-03-16 18:33:17,049 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1638 transitions. Word has length 99 [2025-03-16 18:33:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:17,049 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1638 transitions. [2025-03-16 18:33:17,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1638 transitions. [2025-03-16 18:33:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-16 18:33:17,052 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:17,052 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:17,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:17,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:17,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:17,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:17,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1259312229, now seen corresponding path program 1 times [2025-03-16 18:33:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477118288] [2025-03-16 18:33:17,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:17,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:33:17,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:33:17,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:17,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477118288] [2025-03-16 18:33:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477118288] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675858927] [2025-03-16 18:33:17,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:17,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:17,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:17,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:17,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 18:33:17,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:33:17,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:33:17,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:17,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:17,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:17,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:17,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675858927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:17,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647735508] [2025-03-16 18:33:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:17,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:17,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:17,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:17,701 INFO L87 Difference]: Start difference. First operand 968 states and 1638 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:17,823 INFO L93 Difference]: Finished difference Result 1949 states and 3309 transitions. [2025-03-16 18:33:17,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:17,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2025-03-16 18:33:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:17,828 INFO L225 Difference]: With dead ends: 1949 [2025-03-16 18:33:17,828 INFO L226 Difference]: Without dead ends: 983 [2025-03-16 18:33:17,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:17,833 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 76 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:17,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2537 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2025-03-16 18:33:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 968. [2025-03-16 18:33:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 764 states have (on average 1.7041884816753927) internal successors, (1302), 796 states have internal predecessors, (1302), 165 states have call successors, (165), 38 states have call predecessors, (165), 38 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1633 transitions. [2025-03-16 18:33:17,857 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1633 transitions. Word has length 100 [2025-03-16 18:33:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:17,857 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1633 transitions. [2025-03-16 18:33:17,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1633 transitions. [2025-03-16 18:33:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-16 18:33:17,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:17,859 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:17,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:18,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-16 18:33:18,060 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:18,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1886681669, now seen corresponding path program 1 times [2025-03-16 18:33:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926105132] [2025-03-16 18:33:18,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:18,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 18:33:18,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 18:33:18,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:18,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:18,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926105132] [2025-03-16 18:33:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926105132] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437510943] [2025-03-16 18:33:18,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:18,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:18,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 18:33:18,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-03-16 18:33:18,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-03-16 18:33:18,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:18,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:18,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:18,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437510943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:18,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:18,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099008618] [2025-03-16 18:33:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:18,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:18,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:18,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:18,490 INFO L87 Difference]: Start difference. First operand 968 states and 1633 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:18,592 INFO L93 Difference]: Finished difference Result 1949 states and 3299 transitions. [2025-03-16 18:33:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2025-03-16 18:33:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:18,598 INFO L225 Difference]: With dead ends: 1949 [2025-03-16 18:33:18,598 INFO L226 Difference]: Without dead ends: 983 [2025-03-16 18:33:18,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:18,602 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 75 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:18,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2537 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2025-03-16 18:33:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 968. [2025-03-16 18:33:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 764 states have (on average 1.6976439790575917) internal successors, (1297), 796 states have internal predecessors, (1297), 165 states have call successors, (165), 38 states have call predecessors, (165), 38 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1628 transitions. [2025-03-16 18:33:18,640 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1628 transitions. Word has length 102 [2025-03-16 18:33:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:18,640 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1628 transitions. [2025-03-16 18:33:18,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1628 transitions. [2025-03-16 18:33:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-16 18:33:18,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:18,643 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:18,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 18:33:18,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:18,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:18,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash -221154053, now seen corresponding path program 1 times [2025-03-16 18:33:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:18,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043092900] [2025-03-16 18:33:18,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:18,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 18:33:18,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 18:33:18,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:18,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043092900] [2025-03-16 18:33:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043092900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754285492] [2025-03-16 18:33:18,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:18,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:18,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:18,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 18:33:19,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 18:33:19,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 18:33:19,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:19,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:19,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:19,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:19,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754285492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:19,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233391838] [2025-03-16 18:33:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:19,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:19,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:19,268 INFO L87 Difference]: Start difference. First operand 968 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:19,407 INFO L93 Difference]: Finished difference Result 2000 states and 3372 transitions. [2025-03-16 18:33:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2025-03-16 18:33:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:19,412 INFO L225 Difference]: With dead ends: 2000 [2025-03-16 18:33:19,413 INFO L226 Difference]: Without dead ends: 1049 [2025-03-16 18:33:19,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:19,416 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 130 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:19,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2568 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-16 18:33:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1019. [2025-03-16 18:33:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 814 states have (on average 1.6977886977886978) internal successors, (1382), 846 states have internal predecessors, (1382), 165 states have call successors, (165), 39 states have call predecessors, (165), 39 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1713 transitions. [2025-03-16 18:33:19,484 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1713 transitions. Word has length 104 [2025-03-16 18:33:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:19,485 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1713 transitions. [2025-03-16 18:33:19,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1713 transitions. [2025-03-16 18:33:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:33:19,487 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:19,487 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:19,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-16 18:33:19,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 18:33:19,688 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:19,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 511121814, now seen corresponding path program 1 times [2025-03-16 18:33:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890819990] [2025-03-16 18:33:19,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:19,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:19,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:19,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:19,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:19,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890819990] [2025-03-16 18:33:19,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890819990] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654760057] [2025-03-16 18:33:19,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:19,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:19,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:19,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 18:33:19,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:20,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:20,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:20,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:20,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:20,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:20,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654760057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:20,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:20,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-16 18:33:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843928415] [2025-03-16 18:33:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:20,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:20,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:20,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:20,117 INFO L87 Difference]: Start difference. First operand 1019 states and 1713 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:20,254 INFO L93 Difference]: Finished difference Result 2015 states and 3396 transitions. [2025-03-16 18:33:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:20,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2025-03-16 18:33:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:20,261 INFO L225 Difference]: With dead ends: 2015 [2025-03-16 18:33:20,261 INFO L226 Difference]: Without dead ends: 1049 [2025-03-16 18:33:20,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:20,265 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 124 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:20,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2541 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-16 18:33:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1019. [2025-03-16 18:33:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 814 states have (on average 1.6916461916461916) internal successors, (1377), 846 states have internal predecessors, (1377), 165 states have call successors, (165), 39 states have call predecessors, (165), 39 states have return successors, (166), 159 states have call predecessors, (166), 160 states have call successors, (166) [2025-03-16 18:33:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1708 transitions. [2025-03-16 18:33:20,294 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1708 transitions. Word has length 105 [2025-03-16 18:33:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:20,294 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1708 transitions. [2025-03-16 18:33:20,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1708 transitions. [2025-03-16 18:33:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:33:20,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:20,297 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:20,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:20,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:33:20,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:20,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1845330458, now seen corresponding path program 1 times [2025-03-16 18:33:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106707924] [2025-03-16 18:33:20,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:20,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:20,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:20,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:20,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:20,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106707924] [2025-03-16 18:33:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106707924] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969851099] [2025-03-16 18:33:20,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:20,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:20,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:20,644 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:20,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 18:33:20,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:20,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:20,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:20,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:20,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:20,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:33:20,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969851099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:20,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:20,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:33:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229799337] [2025-03-16 18:33:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:20,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:20,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:20,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:33:20,987 INFO L87 Difference]: Start difference. First operand 1019 states and 1708 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:21,105 INFO L93 Difference]: Finished difference Result 2008 states and 3376 transitions. [2025-03-16 18:33:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2025-03-16 18:33:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:21,111 INFO L225 Difference]: With dead ends: 2008 [2025-03-16 18:33:21,111 INFO L226 Difference]: Without dead ends: 1057 [2025-03-16 18:33:21,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:33:21,115 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 113 mSDsluCounter, 5101 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5966 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:21,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5966 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2025-03-16 18:33:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1038. [2025-03-16 18:33:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 830 states have (on average 1.6903614457831326) internal successors, (1403), 864 states have internal predecessors, (1403), 166 states have call successors, (166), 39 states have call predecessors, (166), 41 states have return successors, (169), 160 states have call predecessors, (169), 161 states have call successors, (169) [2025-03-16 18:33:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1738 transitions. [2025-03-16 18:33:21,142 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1738 transitions. Word has length 105 [2025-03-16 18:33:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:21,143 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1738 transitions. [2025-03-16 18:33:21,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1738 transitions. [2025-03-16 18:33:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:33:21,145 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:21,145 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:21,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:21,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:33:21,346 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:21,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1403575963, now seen corresponding path program 1 times [2025-03-16 18:33:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:21,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123929300] [2025-03-16 18:33:21,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:21,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:21,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:21,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:21,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123929300] [2025-03-16 18:33:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123929300] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820608894] [2025-03-16 18:33:21,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:21,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:21,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:21,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 18:33:21,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:33:21,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:33:21,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:21,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:21,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:33:21,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:21,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820608894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:21,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:33:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042166030] [2025-03-16 18:33:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:21,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:21,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:21,692 INFO L87 Difference]: Start difference. First operand 1038 states and 1738 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:21,781 INFO L93 Difference]: Finished difference Result 1946 states and 3276 transitions. [2025-03-16 18:33:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2025-03-16 18:33:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:21,789 INFO L225 Difference]: With dead ends: 1946 [2025-03-16 18:33:21,790 INFO L226 Difference]: Without dead ends: 1062 [2025-03-16 18:33:21,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:21,794 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 86 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:21,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5189 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2025-03-16 18:33:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1057. [2025-03-16 18:33:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 846 states have (on average 1.6891252955082743) internal successors, (1429), 882 states have internal predecessors, (1429), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1768 transitions. [2025-03-16 18:33:21,826 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1768 transitions. Word has length 105 [2025-03-16 18:33:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:21,827 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1768 transitions. [2025-03-16 18:33:21,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1768 transitions. [2025-03-16 18:33:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:33:21,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:21,829 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:21,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:22,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 18:33:22,030 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:22,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:22,030 INFO L85 PathProgramCache]: Analyzing trace with hash 530920347, now seen corresponding path program 1 times [2025-03-16 18:33:22,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:22,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193033818] [2025-03-16 18:33:22,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:22,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:22,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:22,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 18:33:22,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193033818] [2025-03-16 18:33:22,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193033818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692381822] [2025-03-16 18:33:22,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:22,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:22,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:22,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 18:33:22,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:22,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:22,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:33:22,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:22,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:22,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692381822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:22,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:22,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:33:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748329665] [2025-03-16 18:33:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:22,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:22,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:22,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:22,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:22,382 INFO L87 Difference]: Start difference. First operand 1057 states and 1768 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:22,457 INFO L93 Difference]: Finished difference Result 1976 states and 3327 transitions. [2025-03-16 18:33:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2025-03-16 18:33:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:22,464 INFO L225 Difference]: With dead ends: 1976 [2025-03-16 18:33:22,464 INFO L226 Difference]: Without dead ends: 1092 [2025-03-16 18:33:22,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:22,468 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 95 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:22,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5179 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2025-03-16 18:33:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1057. [2025-03-16 18:33:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 846 states have (on average 1.6891252955082743) internal successors, (1429), 882 states have internal predecessors, (1429), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1768 transitions. [2025-03-16 18:33:22,498 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1768 transitions. Word has length 106 [2025-03-16 18:33:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:22,498 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1768 transitions. [2025-03-16 18:33:22,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1768 transitions. [2025-03-16 18:33:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:33:22,500 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:22,500 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-03-16 18:33:22,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:22,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:22,701 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:22,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1667185484, now seen corresponding path program 1 times [2025-03-16 18:33:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:22,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946369355] [2025-03-16 18:33:22,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:22,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:22,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:22,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946369355] [2025-03-16 18:33:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946369355] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336476299] [2025-03-16 18:33:22,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:22,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:22,766 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:22,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 18:33:22,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:22,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:22,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:22,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:22,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:22,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:23,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336476299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:23,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:33:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201523667] [2025-03-16 18:33:23,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:23,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:23,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:23,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:23,064 INFO L87 Difference]: Start difference. First operand 1057 states and 1768 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:23,176 INFO L93 Difference]: Finished difference Result 1961 states and 3301 transitions. [2025-03-16 18:33:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2025-03-16 18:33:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:23,184 INFO L225 Difference]: With dead ends: 1961 [2025-03-16 18:33:23,184 INFO L226 Difference]: Without dead ends: 1077 [2025-03-16 18:33:23,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:23,189 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 113 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5974 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:23,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5974 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2025-03-16 18:33:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1057. [2025-03-16 18:33:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 846 states have (on average 1.6891252955082743) internal successors, (1429), 882 states have internal predecessors, (1429), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1768 transitions. [2025-03-16 18:33:23,217 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1768 transitions. Word has length 106 [2025-03-16 18:33:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:23,217 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1768 transitions. [2025-03-16 18:33:23,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1768 transitions. [2025-03-16 18:33:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:33:23,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:23,220 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:23,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:23,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 18:33:23,421 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:23,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash -911980220, now seen corresponding path program 1 times [2025-03-16 18:33:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650947279] [2025-03-16 18:33:23,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:23,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:23,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:23,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:23,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650947279] [2025-03-16 18:33:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650947279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995125725] [2025-03-16 18:33:23,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:23,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:23,479 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:23,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 18:33:23,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:33:23,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:33:23,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:23,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:23,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:23,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:33:23,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:23,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995125725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:23,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:23,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955258411] [2025-03-16 18:33:23,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:23,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:23,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:23,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:23,728 INFO L87 Difference]: Start difference. First operand 1057 states and 1768 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:23,771 INFO L93 Difference]: Finished difference Result 2013 states and 3386 transitions. [2025-03-16 18:33:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2025-03-16 18:33:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:23,778 INFO L225 Difference]: With dead ends: 2013 [2025-03-16 18:33:23,778 INFO L226 Difference]: Without dead ends: 1057 [2025-03-16 18:33:23,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:23,781 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 13 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:23,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2615 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2025-03-16 18:33:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1057. [2025-03-16 18:33:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 846 states have (on average 1.6843971631205674) internal successors, (1425), 882 states have internal predecessors, (1425), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1764 transitions. [2025-03-16 18:33:23,810 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1764 transitions. Word has length 106 [2025-03-16 18:33:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:23,810 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1764 transitions. [2025-03-16 18:33:23,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1764 transitions. [2025-03-16 18:33:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-16 18:33:23,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:23,813 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:23,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-16 18:33:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:33:24,013 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -55226255, now seen corresponding path program 1 times [2025-03-16 18:33:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329958256] [2025-03-16 18:33:24,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:24,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:33:24,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:33:24,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329958256] [2025-03-16 18:33:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329958256] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059484775] [2025-03-16 18:33:24,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:24,073 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:24,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 18:33:24,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:33:24,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:33:24,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:24,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:24,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059484775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886628077] [2025-03-16 18:33:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:24,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:24,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:24,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:24,339 INFO L87 Difference]: Start difference. First operand 1057 states and 1764 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:24,382 INFO L93 Difference]: Finished difference Result 2057 states and 3454 transitions. [2025-03-16 18:33:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2025-03-16 18:33:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:24,387 INFO L225 Difference]: With dead ends: 2057 [2025-03-16 18:33:24,387 INFO L226 Difference]: Without dead ends: 1081 [2025-03-16 18:33:24,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:24,390 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 7 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:24,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2588 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2025-03-16 18:33:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1081. [2025-03-16 18:33:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 870 states have (on average 1.6701149425287356) internal successors, (1453), 906 states have internal predecessors, (1453), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1792 transitions. [2025-03-16 18:33:24,411 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1792 transitions. Word has length 107 [2025-03-16 18:33:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:24,411 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1792 transitions. [2025-03-16 18:33:24,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1792 transitions. [2025-03-16 18:33:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-16 18:33:24,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:24,414 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:24,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:24,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 18:33:24,614 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:24,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1518223453, now seen corresponding path program 1 times [2025-03-16 18:33:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205551812] [2025-03-16 18:33:24,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:24,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:33:24,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:33:24,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:24,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205551812] [2025-03-16 18:33:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205551812] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905740474] [2025-03-16 18:33:24,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:24,668 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:24,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 18:33:24,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:33:24,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:33:24,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:24,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:24,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:33:24,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:24,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905740474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:24,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:33:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058900538] [2025-03-16 18:33:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:24,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:24,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:24,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:24,943 INFO L87 Difference]: Start difference. First operand 1081 states and 1792 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:25,035 INFO L93 Difference]: Finished difference Result 1991 states and 3333 transitions. [2025-03-16 18:33:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:25,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2025-03-16 18:33:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:25,046 INFO L225 Difference]: With dead ends: 1991 [2025-03-16 18:33:25,046 INFO L226 Difference]: Without dead ends: 1107 [2025-03-16 18:33:25,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:25,049 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 119 mSDsluCounter, 5069 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:25,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5930 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2025-03-16 18:33:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1081. [2025-03-16 18:33:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 870 states have (on average 1.6701149425287356) internal successors, (1453), 906 states have internal predecessors, (1453), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1792 transitions. [2025-03-16 18:33:25,071 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1792 transitions. Word has length 108 [2025-03-16 18:33:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:25,072 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1792 transitions. [2025-03-16 18:33:25,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1792 transitions. [2025-03-16 18:33:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-16 18:33:25,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:25,074 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:25,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:25,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 18:33:25,275 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:25,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash -751241400, now seen corresponding path program 1 times [2025-03-16 18:33:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613442880] [2025-03-16 18:33:25,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:25,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:33:25,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:33:25,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613442880] [2025-03-16 18:33:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613442880] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897983087] [2025-03-16 18:33:25,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:25,337 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:25,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 18:33:25,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-16 18:33:25,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-16 18:33:25,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:25,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:25,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897983087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:25,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:33:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175787865] [2025-03-16 18:33:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:25,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:25,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:25,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:25,627 INFO L87 Difference]: Start difference. First operand 1081 states and 1792 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:25,648 INFO L93 Difference]: Finished difference Result 1964 states and 3299 transitions. [2025-03-16 18:33:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:25,649 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2025-03-16 18:33:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:25,654 INFO L225 Difference]: With dead ends: 1964 [2025-03-16 18:33:25,655 INFO L226 Difference]: Without dead ends: 1085 [2025-03-16 18:33:25,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:25,658 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 0 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:25,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2637 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2025-03-16 18:33:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1085. [2025-03-16 18:33:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 874 states have (on average 1.6670480549199085) internal successors, (1457), 910 states have internal predecessors, (1457), 167 states have call successors, (167), 39 states have call predecessors, (167), 43 states have return successors, (172), 161 states have call predecessors, (172), 162 states have call successors, (172) [2025-03-16 18:33:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1796 transitions. [2025-03-16 18:33:25,681 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1796 transitions. Word has length 108 [2025-03-16 18:33:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:25,681 INFO L471 AbstractCegarLoop]: Abstraction has 1085 states and 1796 transitions. [2025-03-16 18:33:25,681 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1796 transitions. [2025-03-16 18:33:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-16 18:33:25,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:25,684 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:25,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:25,885 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:25,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1824385571, now seen corresponding path program 1 times [2025-03-16 18:33:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559779020] [2025-03-16 18:33:25,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:25,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:33:25,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:33:25,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:25,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:25,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559779020] [2025-03-16 18:33:25,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559779020] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:25,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973525617] [2025-03-16 18:33:25,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:25,938 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:25,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 18:33:26,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:33:26,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:33:26,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:26,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:26,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 18:33:26,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:33:26,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:26,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973525617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:26,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:26,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2025-03-16 18:33:26,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601331911] [2025-03-16 18:33:26,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:26,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:33:26,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:26,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:33:26,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:26,303 INFO L87 Difference]: Start difference. First operand 1085 states and 1796 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-16 18:33:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:28,830 INFO L93 Difference]: Finished difference Result 3213 states and 5462 transitions. [2025-03-16 18:33:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 18:33:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 111 [2025-03-16 18:33:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:28,851 INFO L225 Difference]: With dead ends: 3213 [2025-03-16 18:33:28,851 INFO L226 Difference]: Without dead ends: 2330 [2025-03-16 18:33:28,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-03-16 18:33:28,857 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 2885 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 5869 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3009 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 5869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:28,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3009 Valid, 4284 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 5869 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-16 18:33:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2025-03-16 18:33:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2307. [2025-03-16 18:33:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 1806 states have (on average 1.6616832779623478) internal successors, (3001), 1885 states have internal predecessors, (3001), 407 states have call successors, (407), 74 states have call predecessors, (407), 93 states have return successors, (479), 409 states have call predecessors, (479), 402 states have call successors, (479) [2025-03-16 18:33:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3887 transitions. [2025-03-16 18:33:28,969 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3887 transitions. Word has length 111 [2025-03-16 18:33:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:28,969 INFO L471 AbstractCegarLoop]: Abstraction has 2307 states and 3887 transitions. [2025-03-16 18:33:28,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-16 18:33:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3887 transitions. [2025-03-16 18:33:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:33:28,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:28,973 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:28,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:29,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:29,174 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:29,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1998510598, now seen corresponding path program 1 times [2025-03-16 18:33:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76995050] [2025-03-16 18:33:29,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:29,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:33:29,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:33:29,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:29,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:33:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76995050] [2025-03-16 18:33:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76995050] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039306866] [2025-03-16 18:33:29,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:29,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:29,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:29,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 18:33:29,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:33:29,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:33:29,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:29,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:29,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:29,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:33:29,474 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039306866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-16 18:33:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938949253] [2025-03-16 18:33:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:29,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:29,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:29,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:29,477 INFO L87 Difference]: Start difference. First operand 2307 states and 3887 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:29,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:29,752 INFO L93 Difference]: Finished difference Result 6192 states and 10609 transitions. [2025-03-16 18:33:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 18:33:29,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2025-03-16 18:33:29,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:29,774 INFO L225 Difference]: With dead ends: 6192 [2025-03-16 18:33:29,774 INFO L226 Difference]: Without dead ends: 4199 [2025-03-16 18:33:29,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:33:29,785 INFO L435 NwaCegarLoop]: 1377 mSDtfsCounter, 728 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:29,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 4826 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:33:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2025-03-16 18:33:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4178. [2025-03-16 18:33:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 3239 states have (on average 1.6622414325409076) internal successors, (5384), 3385 states have internal predecessors, (5384), 765 states have call successors, (765), 144 states have call predecessors, (765), 173 states have return successors, (910), 770 states have call predecessors, (910), 760 states have call successors, (910) [2025-03-16 18:33:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 7059 transitions. [2025-03-16 18:33:29,904 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 7059 transitions. Word has length 112 [2025-03-16 18:33:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:29,904 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 7059 transitions. [2025-03-16 18:33:29,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 7059 transitions. [2025-03-16 18:33:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:33:29,911 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:29,911 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2025-03-16 18:33:29,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:30,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:30,112 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:30,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1987882476, now seen corresponding path program 1 times [2025-03-16 18:33:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511095252] [2025-03-16 18:33:30,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:30,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:33:30,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:33:30,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:30,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511095252] [2025-03-16 18:33:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511095252] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761955983] [2025-03-16 18:33:30,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:30,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:30,196 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:30,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 18:33:30,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:33:30,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:33:30,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:30,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:30,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:30,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:30,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761955983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:30,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:30,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:33:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854950346] [2025-03-16 18:33:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:30,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:30,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:30,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:30,443 INFO L87 Difference]: Start difference. First operand 4178 states and 7059 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:30,570 INFO L93 Difference]: Finished difference Result 8199 states and 13904 transitions. [2025-03-16 18:33:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:33:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2025-03-16 18:33:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:30,601 INFO L225 Difference]: With dead ends: 8199 [2025-03-16 18:33:30,601 INFO L226 Difference]: Without dead ends: 4214 [2025-03-16 18:33:30,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:30,615 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 5 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:30,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2587 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2025-03-16 18:33:30,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4196. [2025-03-16 18:33:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 3257 states have (on average 1.6622658888547743) internal successors, (5414), 3403 states have internal predecessors, (5414), 765 states have call successors, (765), 144 states have call predecessors, (765), 173 states have return successors, (910), 770 states have call predecessors, (910), 760 states have call successors, (910) [2025-03-16 18:33:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 7089 transitions. [2025-03-16 18:33:30,747 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 7089 transitions. Word has length 114 [2025-03-16 18:33:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:30,747 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 7089 transitions. [2025-03-16 18:33:30,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:33:30,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 7089 transitions. [2025-03-16 18:33:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:33:30,754 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:30,754 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:33:30,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-16 18:33:30,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:30,955 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:30,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -658662930, now seen corresponding path program 1 times [2025-03-16 18:33:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384679763] [2025-03-16 18:33:30,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:30,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:33:30,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:33:30,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:30,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384679763] [2025-03-16 18:33:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384679763] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935704514] [2025-03-16 18:33:31,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:31,042 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:31,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-16 18:33:31,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:33:31,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:33:31,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:31,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 18:33:31,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:31,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935704514] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:31,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:33:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905603494] [2025-03-16 18:33:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:31,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:31,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:31,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:31,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:33:31,332 INFO L87 Difference]: Start difference. First operand 4196 states and 7089 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:31,501 INFO L93 Difference]: Finished difference Result 8141 states and 13799 transitions. [2025-03-16 18:33:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:33:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 115 [2025-03-16 18:33:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:31,523 INFO L225 Difference]: With dead ends: 8141 [2025-03-16 18:33:31,523 INFO L226 Difference]: Without dead ends: 4266 [2025-03-16 18:33:31,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:33:31,535 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 89 mSDsluCounter, 5090 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:31,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5951 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2025-03-16 18:33:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4199. [2025-03-16 18:33:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 3259 states have (on average 1.6615526235041425) internal successors, (5415), 3406 states have internal predecessors, (5415), 765 states have call successors, (765), 144 states have call predecessors, (765), 174 states have return successors, (911), 770 states have call predecessors, (911), 760 states have call successors, (911) [2025-03-16 18:33:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 7091 transitions. [2025-03-16 18:33:31,632 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 7091 transitions. Word has length 115 [2025-03-16 18:33:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:31,632 INFO L471 AbstractCegarLoop]: Abstraction has 4199 states and 7091 transitions. [2025-03-16 18:33:31,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:33:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 7091 transitions. [2025-03-16 18:33:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:33:31,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:31,638 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-03-16 18:33:31,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-16 18:33:31,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:31,839 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:31,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1600320077, now seen corresponding path program 1 times [2025-03-16 18:33:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:31,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612274546] [2025-03-16 18:33:31,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:31,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:31,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:33:31,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:33:31,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:31,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:31,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612274546] [2025-03-16 18:33:31,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612274546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:31,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491816315] [2025-03-16 18:33:31,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:31,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:31,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:31,923 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:31,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-16 18:33:32,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:33:32,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:33:32,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:32,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:32,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:33:32,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:33:32,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491816315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:32,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:32,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2025-03-16 18:33:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621470211] [2025-03-16 18:33:32,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:32,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:32,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:32,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:32,286 INFO L87 Difference]: Start difference. First operand 4199 states and 7091 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:32,542 INFO L93 Difference]: Finished difference Result 4464 states and 7553 transitions. [2025-03-16 18:33:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:32,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 115 [2025-03-16 18:33:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:32,567 INFO L225 Difference]: With dead ends: 4464 [2025-03-16 18:33:32,567 INFO L226 Difference]: Without dead ends: 4447 [2025-03-16 18:33:32,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:32,572 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 827 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:32,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1605 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:33:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2025-03-16 18:33:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4215. [2025-03-16 18:33:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 3275 states have (on average 1.658320610687023) internal successors, (5431), 3422 states have internal predecessors, (5431), 765 states have call successors, (765), 144 states have call predecessors, (765), 174 states have return successors, (911), 770 states have call predecessors, (911), 760 states have call successors, (911) [2025-03-16 18:33:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7107 transitions. [2025-03-16 18:33:32,690 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7107 transitions. Word has length 115 [2025-03-16 18:33:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:32,691 INFO L471 AbstractCegarLoop]: Abstraction has 4215 states and 7107 transitions. [2025-03-16 18:33:32,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-16 18:33:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7107 transitions. [2025-03-16 18:33:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-16 18:33:32,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:32,697 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-03-16 18:33:32,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:32,898 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:32,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1882757579, now seen corresponding path program 1 times [2025-03-16 18:33:32,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045360044] [2025-03-16 18:33:32,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:32,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:33:32,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:33:32,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:32,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:33:33,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045360044] [2025-03-16 18:33:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045360044] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798596091] [2025-03-16 18:33:33,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:33,028 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:33,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-16 18:33:33,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:33:33,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:33:33,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:33,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:33,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:33,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:33:33,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798596091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2025-03-16 18:33:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554764506] [2025-03-16 18:33:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:33,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:33,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:33,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:33,304 INFO L87 Difference]: Start difference. First operand 4215 states and 7107 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 18:33:33,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:33,369 INFO L93 Difference]: Finished difference Result 4232 states and 7127 transitions. [2025-03-16 18:33:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:33,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2025-03-16 18:33:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:33,389 INFO L225 Difference]: With dead ends: 4232 [2025-03-16 18:33:33,390 INFO L226 Difference]: Without dead ends: 4215 [2025-03-16 18:33:33,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:33:33,393 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 0 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:33,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3516 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2025-03-16 18:33:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4215. [2025-03-16 18:33:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 3275 states have (on average 1.6546564885496182) internal successors, (5419), 3422 states have internal predecessors, (5419), 765 states have call successors, (765), 144 states have call predecessors, (765), 174 states have return successors, (911), 770 states have call predecessors, (911), 760 states have call successors, (911) [2025-03-16 18:33:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7095 transitions. [2025-03-16 18:33:33,499 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7095 transitions. Word has length 121 [2025-03-16 18:33:33,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:33,501 INFO L471 AbstractCegarLoop]: Abstraction has 4215 states and 7095 transitions. [2025-03-16 18:33:33,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 18:33:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7095 transitions. [2025-03-16 18:33:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:33:33,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:33,508 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2025-03-16 18:33:33,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:33,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 18:33:33,708 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:33,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -943937092, now seen corresponding path program 1 times [2025-03-16 18:33:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876274296] [2025-03-16 18:33:33,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:33,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:33:33,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:33:33,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:33,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:33:33,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876274296] [2025-03-16 18:33:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876274296] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188256526] [2025-03-16 18:33:33,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:33,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:33,872 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:33,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-16 18:33:34,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:33:34,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:33:34,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:34,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:34,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-16 18:33:34,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:33:34,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188256526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-16 18:33:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466319501] [2025-03-16 18:33:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:34,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:34,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:34,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:34,207 INFO L87 Difference]: Start difference. First operand 4215 states and 7095 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:34,354 INFO L93 Difference]: Finished difference Result 8290 states and 13988 transitions. [2025-03-16 18:33:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2025-03-16 18:33:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:34,374 INFO L225 Difference]: With dead ends: 8290 [2025-03-16 18:33:34,375 INFO L226 Difference]: Without dead ends: 4295 [2025-03-16 18:33:34,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:34,388 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 119 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5124 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:34,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5124 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2025-03-16 18:33:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4215. [2025-03-16 18:33:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 3275 states have (on average 1.6546564885496182) internal successors, (5419), 3422 states have internal predecessors, (5419), 765 states have call successors, (765), 144 states have call predecessors, (765), 174 states have return successors, (911), 770 states have call predecessors, (911), 760 states have call successors, (911) [2025-03-16 18:33:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7095 transitions. [2025-03-16 18:33:34,489 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7095 transitions. Word has length 131 [2025-03-16 18:33:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:34,489 INFO L471 AbstractCegarLoop]: Abstraction has 4215 states and 7095 transitions. [2025-03-16 18:33:34,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7095 transitions. [2025-03-16 18:33:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:33:34,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:34,496 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2025-03-16 18:33:34,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:34,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 18:33:34,698 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:34,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1185519650, now seen corresponding path program 1 times [2025-03-16 18:33:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528945282] [2025-03-16 18:33:34,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:34,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:33:34,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:33:34,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:34,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:33:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528945282] [2025-03-16 18:33:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528945282] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699875322] [2025-03-16 18:33:34,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:34,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:34,781 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:34,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-16 18:33:34,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:33:35,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:33:35,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:35,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:35,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:33:35,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:33:35,049 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:35,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699875322] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 18:33:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268094889] [2025-03-16 18:33:35,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:35,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:35,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:35,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:35,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:35,050 INFO L87 Difference]: Start difference. First operand 4215 states and 7095 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:35,147 INFO L93 Difference]: Finished difference Result 8297 states and 13997 transitions. [2025-03-16 18:33:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:35,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2025-03-16 18:33:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:35,170 INFO L225 Difference]: With dead ends: 8297 [2025-03-16 18:33:35,170 INFO L226 Difference]: Without dead ends: 4045 [2025-03-16 18:33:35,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:35,183 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 7 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:35,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2615 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4045 states. [2025-03-16 18:33:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4045 to 4045. [2025-03-16 18:33:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 3120 states have (on average 1.6596153846153847) internal successors, (5178), 3261 states have internal predecessors, (5178), 760 states have call successors, (760), 141 states have call predecessors, (760), 164 states have return successors, (897), 764 states have call predecessors, (897), 755 states have call successors, (897) [2025-03-16 18:33:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6835 transitions. [2025-03-16 18:33:35,289 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6835 transitions. Word has length 131 [2025-03-16 18:33:35,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:35,290 INFO L471 AbstractCegarLoop]: Abstraction has 4045 states and 6835 transitions. [2025-03-16 18:33:35,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6835 transitions. [2025-03-16 18:33:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-16 18:33:35,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:35,297 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:35,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-16 18:33:35,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 18:33:35,498 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:35,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1015092528, now seen corresponding path program 1 times [2025-03-16 18:33:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375212176] [2025-03-16 18:33:35,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:35,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:33:35,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:33:35,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:35,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 18:33:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375212176] [2025-03-16 18:33:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375212176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897293104] [2025-03-16 18:33:35,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:35,583 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:35,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-16 18:33:35,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-16 18:33:35,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-16 18:33:35,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:35,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:35,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:35,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:33:35,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897293104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:35,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:35,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:33:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357667252] [2025-03-16 18:33:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:35,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:35,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:35,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:35,973 INFO L87 Difference]: Start difference. First operand 4045 states and 6835 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:36,102 INFO L93 Difference]: Finished difference Result 8097 states and 13688 transitions. [2025-03-16 18:33:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2025-03-16 18:33:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:36,124 INFO L225 Difference]: With dead ends: 8097 [2025-03-16 18:33:36,124 INFO L226 Difference]: Without dead ends: 4078 [2025-03-16 18:33:36,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:36,138 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 128 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:36,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2494 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2025-03-16 18:33:36,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4045. [2025-03-16 18:33:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 3120 states have (on average 1.659294871794872) internal successors, (5177), 3261 states have internal predecessors, (5177), 760 states have call successors, (760), 141 states have call predecessors, (760), 164 states have return successors, (897), 764 states have call predecessors, (897), 755 states have call successors, (897) [2025-03-16 18:33:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6834 transitions. [2025-03-16 18:33:36,241 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6834 transitions. Word has length 133 [2025-03-16 18:33:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:36,242 INFO L471 AbstractCegarLoop]: Abstraction has 4045 states and 6834 transitions. [2025-03-16 18:33:36,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6834 transitions. [2025-03-16 18:33:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-16 18:33:36,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:36,247 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:36,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-16 18:33:36,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-16 18:33:36,451 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:36,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 396834135, now seen corresponding path program 1 times [2025-03-16 18:33:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132702416] [2025-03-16 18:33:36,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:36,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-16 18:33:36,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-16 18:33:36,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:36,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:33:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132702416] [2025-03-16 18:33:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132702416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774745708] [2025-03-16 18:33:36,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:36,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:36,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:36,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:36,558 INFO L87 Difference]: Start difference. First operand 4045 states and 6834 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:36,678 INFO L93 Difference]: Finished difference Result 5787 states and 9760 transitions. [2025-03-16 18:33:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 134 [2025-03-16 18:33:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:36,699 INFO L225 Difference]: With dead ends: 5787 [2025-03-16 18:33:36,699 INFO L226 Difference]: Without dead ends: 4080 [2025-03-16 18:33:36,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:36,707 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 115 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:36,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5118 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2025-03-16 18:33:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 4045. [2025-03-16 18:33:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 3120 states have (on average 1.659294871794872) internal successors, (5177), 3261 states have internal predecessors, (5177), 760 states have call successors, (760), 141 states have call predecessors, (760), 164 states have return successors, (897), 764 states have call predecessors, (897), 755 states have call successors, (897) [2025-03-16 18:33:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6834 transitions. [2025-03-16 18:33:36,809 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6834 transitions. Word has length 134 [2025-03-16 18:33:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:36,810 INFO L471 AbstractCegarLoop]: Abstraction has 4045 states and 6834 transitions. [2025-03-16 18:33:36,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:33:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6834 transitions. [2025-03-16 18:33:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-16 18:33:36,815 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:36,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1] [2025-03-16 18:33:36,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-16 18:33:36,815 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:36,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash 876607358, now seen corresponding path program 1 times [2025-03-16 18:33:36,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:36,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522584405] [2025-03-16 18:33:36,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:36,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-16 18:33:36,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-16 18:33:36,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:36,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:33:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522584405] [2025-03-16 18:33:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522584405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:36,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:36,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:33:36,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485228917] [2025-03-16 18:33:36,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:36,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:36,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:36,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:36,879 INFO L87 Difference]: Start difference. First operand 4045 states and 6834 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:36,948 INFO L93 Difference]: Finished difference Result 5836 states and 9842 transitions. [2025-03-16 18:33:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:36,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2025-03-16 18:33:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:36,959 INFO L225 Difference]: With dead ends: 5836 [2025-03-16 18:33:36,960 INFO L226 Difference]: Without dead ends: 1801 [2025-03-16 18:33:36,970 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 [2025-03-16 18:33:36,971 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 8 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:36,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2612 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2025-03-16 18:33:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1801. [2025-03-16 18:33:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1423 states have (on average 1.6654954321855235) internal successors, (2370), 1482 states have internal predecessors, (2370), 303 states have call successors, (303), 74 states have call predecessors, (303), 74 states have return successors, (320), 295 states have call predecessors, (320), 298 states have call successors, (320) [2025-03-16 18:33:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2993 transitions. [2025-03-16 18:33:37,015 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2993 transitions. Word has length 134 [2025-03-16 18:33:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:37,015 INFO L471 AbstractCegarLoop]: Abstraction has 1801 states and 2993 transitions. [2025-03-16 18:33:37,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:33:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2993 transitions. [2025-03-16 18:33:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:33:37,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:37,018 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:37,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-16 18:33:37,018 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:37,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -486923492, now seen corresponding path program 1 times [2025-03-16 18:33:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050071600] [2025-03-16 18:33:37,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:37,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:33:37,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:33:37,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:37,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:37,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:37,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050071600] [2025-03-16 18:33:37,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050071600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:37,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:37,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238159854] [2025-03-16 18:33:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:37,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:37,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:37,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:37,198 INFO L87 Difference]: Start difference. First operand 1801 states and 2993 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:39,129 INFO L93 Difference]: Finished difference Result 4008 states and 6712 transitions. [2025-03-16 18:33:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 18:33:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2025-03-16 18:33:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:39,143 INFO L225 Difference]: With dead ends: 4008 [2025-03-16 18:33:39,143 INFO L226 Difference]: Without dead ends: 2306 [2025-03-16 18:33:39,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-16 18:33:39,149 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 2356 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:39,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 1880 Invalid, 4115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 18:33:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2025-03-16 18:33:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2163. [2025-03-16 18:33:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1709 states have (on average 1.6617905207723815) internal successors, (2840), 1781 states have internal predecessors, (2840), 358 states have call successors, (358), 86 states have call predecessors, (358), 95 states have return successors, (400), 345 states have call predecessors, (400), 353 states have call successors, (400) [2025-03-16 18:33:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3598 transitions. [2025-03-16 18:33:39,205 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3598 transitions. Word has length 135 [2025-03-16 18:33:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:39,206 INFO L471 AbstractCegarLoop]: Abstraction has 2163 states and 3598 transitions. [2025-03-16 18:33:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:33:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3598 transitions. [2025-03-16 18:33:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-16 18:33:39,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:39,208 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:39,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-16 18:33:39,208 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:39,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:39,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1334949455, now seen corresponding path program 1 times [2025-03-16 18:33:39,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:39,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386606127] [2025-03-16 18:33:39,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:39,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:39,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-16 18:33:39,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-16 18:33:39,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:39,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386606127] [2025-03-16 18:33:39,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386606127] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:39,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:33:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038727390] [2025-03-16 18:33:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:39,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:39,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:39,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:39,330 INFO L87 Difference]: Start difference. First operand 2163 states and 3598 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:33:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:39,400 INFO L93 Difference]: Finished difference Result 4252 states and 7128 transitions. [2025-03-16 18:33:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:39,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2025-03-16 18:33:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:39,413 INFO L225 Difference]: With dead ends: 4252 [2025-03-16 18:33:39,413 INFO L226 Difference]: Without dead ends: 2188 [2025-03-16 18:33:39,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:39,421 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 0 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:39,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3326 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2025-03-16 18:33:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2182. [2025-03-16 18:33:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 1724 states have (on average 1.6554524361948957) internal successors, (2854), 1795 states have internal predecessors, (2854), 357 states have call successors, (357), 86 states have call predecessors, (357), 100 states have return successors, (414), 350 states have call predecessors, (414), 352 states have call successors, (414) [2025-03-16 18:33:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 3625 transitions. [2025-03-16 18:33:39,476 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 3625 transitions. Word has length 140 [2025-03-16 18:33:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:39,477 INFO L471 AbstractCegarLoop]: Abstraction has 2182 states and 3625 transitions. [2025-03-16 18:33:39,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:33:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 3625 transitions. [2025-03-16 18:33:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-16 18:33:39,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:39,479 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:39,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 18:33:39,479 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:39,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1419157399, now seen corresponding path program 1 times [2025-03-16 18:33:39,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:39,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213784619] [2025-03-16 18:33:39,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:39,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:39,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-16 18:33:39,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-16 18:33:39,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:39,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213784619] [2025-03-16 18:33:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213784619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:39,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:33:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687672208] [2025-03-16 18:33:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:39,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:39,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:39,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:39,636 INFO L87 Difference]: Start difference. First operand 2182 states and 3625 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-16 18:33:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:41,244 INFO L93 Difference]: Finished difference Result 7061 states and 11917 transitions. [2025-03-16 18:33:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:33:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 144 [2025-03-16 18:33:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:41,263 INFO L225 Difference]: With dead ends: 7061 [2025-03-16 18:33:41,264 INFO L226 Difference]: Without dead ends: 4973 [2025-03-16 18:33:41,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:41,270 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 3375 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:41,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3523 Valid, 1660 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 18:33:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2025-03-16 18:33:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 4874. [2025-03-16 18:33:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 3813 states have (on average 1.6535536323105167) internal successors, (6305), 3976 states have internal predecessors, (6305), 836 states have call successors, (836), 192 states have call predecessors, (836), 224 states have return successors, (1025), 827 states have call predecessors, (1025), 831 states have call successors, (1025) [2025-03-16 18:33:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 8166 transitions. [2025-03-16 18:33:41,454 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 8166 transitions. Word has length 144 [2025-03-16 18:33:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:41,456 INFO L471 AbstractCegarLoop]: Abstraction has 4874 states and 8166 transitions. [2025-03-16 18:33:41,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-16 18:33:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 8166 transitions. [2025-03-16 18:33:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 18:33:41,459 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:41,459 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:41,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-16 18:33:41,459 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:41,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1109683115, now seen corresponding path program 1 times [2025-03-16 18:33:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957101812] [2025-03-16 18:33:41,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:41,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 18:33:41,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 18:33:41,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:41,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:33:41,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:41,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957101812] [2025-03-16 18:33:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957101812] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:41,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:33:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996902269] [2025-03-16 18:33:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:41,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:33:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:41,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:33:41,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:33:41,614 INFO L87 Difference]: Start difference. First operand 4874 states and 8166 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:33:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:41,880 INFO L93 Difference]: Finished difference Result 9328 states and 15973 transitions. [2025-03-16 18:33:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:33:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 147 [2025-03-16 18:33:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:41,904 INFO L225 Difference]: With dead ends: 9328 [2025-03-16 18:33:41,905 INFO L226 Difference]: Without dead ends: 4932 [2025-03-16 18:33:41,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:41,915 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 224 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:41,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 4149 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2025-03-16 18:33:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4878. [2025-03-16 18:33:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 3815 states have (on average 1.6387942332896461) internal successors, (6252), 3980 states have internal predecessors, (6252), 836 states have call successors, (836), 192 states have call predecessors, (836), 226 states have return successors, (1029), 827 states have call predecessors, (1029), 831 states have call successors, (1029) [2025-03-16 18:33:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 8117 transitions. [2025-03-16 18:33:42,159 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 8117 transitions. Word has length 147 [2025-03-16 18:33:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:42,160 INFO L471 AbstractCegarLoop]: Abstraction has 4878 states and 8117 transitions. [2025-03-16 18:33:42,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:33:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 8117 transitions. [2025-03-16 18:33:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 18:33:42,162 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:42,162 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:42,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-16 18:33:42,163 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:42,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 532215034, now seen corresponding path program 1 times [2025-03-16 18:33:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832217481] [2025-03-16 18:33:42,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:42,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 18:33:42,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 18:33:42,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:42,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 18:33:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832217481] [2025-03-16 18:33:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832217481] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:33:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674646867] [2025-03-16 18:33:42,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:42,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:42,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:33:42,305 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:33:42,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-16 18:33:42,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 18:33:42,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 18:33:42,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:42,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:42,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:33:42,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:33:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:33:42,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:33:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674646867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:42,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:33:42,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-16 18:33:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910794051] [2025-03-16 18:33:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:42,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:42,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:42,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:42,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:42,602 INFO L87 Difference]: Start difference. First operand 4878 states and 8117 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:42,822 INFO L93 Difference]: Finished difference Result 9714 states and 16392 transitions. [2025-03-16 18:33:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2025-03-16 18:33:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:42,845 INFO L225 Difference]: With dead ends: 9714 [2025-03-16 18:33:42,846 INFO L226 Difference]: Without dead ends: 4928 [2025-03-16 18:33:42,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:42,861 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 14 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:42,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2417 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:33:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2025-03-16 18:33:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4928. [2025-03-16 18:33:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 3855 states have (on average 1.6293125810635538) internal successors, (6281), 4025 states have internal predecessors, (6281), 836 states have call successors, (836), 197 states have call predecessors, (836), 236 states have return successors, (1039), 827 states have call predecessors, (1039), 831 states have call successors, (1039) [2025-03-16 18:33:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 8156 transitions. [2025-03-16 18:33:43,080 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 8156 transitions. Word has length 151 [2025-03-16 18:33:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:43,080 INFO L471 AbstractCegarLoop]: Abstraction has 4928 states and 8156 transitions. [2025-03-16 18:33:43,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:33:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 8156 transitions. [2025-03-16 18:33:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 18:33:43,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:43,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:43,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-16 18:33:43,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:33:43,284 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:43,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1958285563, now seen corresponding path program 1 times [2025-03-16 18:33:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361266203] [2025-03-16 18:33:43,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:43,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:33:43,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:33:43,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:43,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:33:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361266203] [2025-03-16 18:33:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361266203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:43,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:43,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101227483] [2025-03-16 18:33:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:43,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:43,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:43,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:43,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:43,450 INFO L87 Difference]: Start difference. First operand 4928 states and 8156 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:33:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:45,117 INFO L93 Difference]: Finished difference Result 9479 states and 15780 transitions. [2025-03-16 18:33:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:33:45,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 152 [2025-03-16 18:33:45,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:45,140 INFO L225 Difference]: With dead ends: 9479 [2025-03-16 18:33:45,140 INFO L226 Difference]: Without dead ends: 5448 [2025-03-16 18:33:45,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-03-16 18:33:45,150 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 1934 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 3708 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 4125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:45,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 2091 Invalid, 4125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3708 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 18:33:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2025-03-16 18:33:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 5077. [2025-03-16 18:33:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 3965 states have (on average 1.6199243379571249) internal successors, (6423), 4145 states have internal predecessors, (6423), 850 states have call successors, (850), 212 states have call predecessors, (850), 261 states have return successors, (1090), 841 states have call predecessors, (1090), 845 states have call successors, (1090) [2025-03-16 18:33:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 8363 transitions. [2025-03-16 18:33:45,318 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 8363 transitions. Word has length 152 [2025-03-16 18:33:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:45,319 INFO L471 AbstractCegarLoop]: Abstraction has 5077 states and 8363 transitions. [2025-03-16 18:33:45,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:33:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 8363 transitions. [2025-03-16 18:33:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-16 18:33:45,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:45,321 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:45,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-16 18:33:45,321 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:45,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1473785170, now seen corresponding path program 1 times [2025-03-16 18:33:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:45,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927473947] [2025-03-16 18:33:45,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:45,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-16 18:33:45,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-16 18:33:45,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:45,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:33:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927473947] [2025-03-16 18:33:45,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927473947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:45,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:45,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-16 18:33:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941538768] [2025-03-16 18:33:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:45,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:33:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:45,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:33:45,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:33:45,507 INFO L87 Difference]: Start difference. First operand 5077 states and 8363 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:46,518 INFO L93 Difference]: Finished difference Result 10076 states and 16697 transitions. [2025-03-16 18:33:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:33:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 157 [2025-03-16 18:33:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:46,544 INFO L225 Difference]: With dead ends: 10076 [2025-03-16 18:33:46,545 INFO L226 Difference]: Without dead ends: 5103 [2025-03-16 18:33:46,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:33:46,558 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 1240 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:46,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1678 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 18:33:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2025-03-16 18:33:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5087. [2025-03-16 18:33:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 3970 states have (on average 1.6115869017632243) internal successors, (6398), 4155 states have internal predecessors, (6398), 850 states have call successors, (850), 212 states have call predecessors, (850), 266 states have return successors, (1130), 841 states have call predecessors, (1130), 845 states have call successors, (1130) [2025-03-16 18:33:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 8378 transitions. [2025-03-16 18:33:46,776 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 8378 transitions. Word has length 157 [2025-03-16 18:33:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:46,777 INFO L471 AbstractCegarLoop]: Abstraction has 5087 states and 8378 transitions. [2025-03-16 18:33:46,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 8378 transitions. [2025-03-16 18:33:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-16 18:33:46,780 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:46,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:46,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-16 18:33:46,780 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:46,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash 527302619, now seen corresponding path program 1 times [2025-03-16 18:33:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636403040] [2025-03-16 18:33:46,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:46,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-16 18:33:46,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-16 18:33:46,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:46,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-16 18:33:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636403040] [2025-03-16 18:33:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636403040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:46,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 18:33:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553382343] [2025-03-16 18:33:46,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:46,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 18:33:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:46,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 18:33:46,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:33:46,986 INFO L87 Difference]: Start difference. First operand 5087 states and 8378 transitions. Second operand has 9 states, 8 states have (on average 13.25) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:33:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:49,260 INFO L93 Difference]: Finished difference Result 10649 states and 17508 transitions. [2025-03-16 18:33:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 18:33:49,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 160 [2025-03-16 18:33:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:49,285 INFO L225 Difference]: With dead ends: 10649 [2025-03-16 18:33:49,286 INFO L226 Difference]: Without dead ends: 6324 [2025-03-16 18:33:49,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-03-16 18:33:49,297 INFO L435 NwaCegarLoop]: 615 mSDtfsCounter, 1986 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 6738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:49,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 3678 Invalid, 6738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 6335 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 18:33:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2025-03-16 18:33:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 5918. [2025-03-16 18:33:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5918 states, 4626 states have (on average 1.590142671854734) internal successors, (7356), 4840 states have internal predecessors, (7356), 953 states have call successors, (953), 262 states have call predecessors, (953), 338 states have return successors, (1289), 937 states have call predecessors, (1289), 948 states have call successors, (1289) [2025-03-16 18:33:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 9598 transitions. [2025-03-16 18:33:49,506 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 9598 transitions. Word has length 160 [2025-03-16 18:33:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:49,507 INFO L471 AbstractCegarLoop]: Abstraction has 5918 states and 9598 transitions. [2025-03-16 18:33:49,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-16 18:33:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 9598 transitions. [2025-03-16 18:33:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-16 18:33:49,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:49,510 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:49,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-16 18:33:49,510 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:49,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1011804556, now seen corresponding path program 1 times [2025-03-16 18:33:49,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:49,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54055000] [2025-03-16 18:33:49,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:49,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:49,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-16 18:33:49,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-16 18:33:49,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:49,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 18:33:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54055000] [2025-03-16 18:33:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54055000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:33:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796142566] [2025-03-16 18:33:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:49,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:33:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:49,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:33:49,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:49,632 INFO L87 Difference]: Start difference. First operand 5918 states and 9598 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:51,442 INFO L93 Difference]: Finished difference Result 20891 states and 34633 transitions. [2025-03-16 18:33:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:33:51,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2025-03-16 18:33:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:51,548 INFO L225 Difference]: With dead ends: 20891 [2025-03-16 18:33:51,548 INFO L226 Difference]: Without dead ends: 15083 [2025-03-16 18:33:51,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:51,562 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 2178 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:51,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 1290 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 18:33:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15083 states. [2025-03-16 18:33:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15083 to 14593. [2025-03-16 18:33:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14593 states, 11039 states have (on average 1.5804873629857776) internal successors, (17447), 11678 states have internal predecessors, (17447), 2770 states have call successors, (2770), 568 states have call predecessors, (2770), 783 states have return successors, (3958), 2750 states have call predecessors, (3958), 2765 states have call successors, (3958) [2025-03-16 18:33:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14593 states to 14593 states and 24175 transitions. [2025-03-16 18:33:52,233 INFO L78 Accepts]: Start accepts. Automaton has 14593 states and 24175 transitions. Word has length 158 [2025-03-16 18:33:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:52,234 INFO L471 AbstractCegarLoop]: Abstraction has 14593 states and 24175 transitions. [2025-03-16 18:33:52,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-16 18:33:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 14593 states and 24175 transitions. [2025-03-16 18:33:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 18:33:52,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:52,237 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:52,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-16 18:33:52,237 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:52,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash 423484504, now seen corresponding path program 1 times [2025-03-16 18:33:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981054023] [2025-03-16 18:33:52,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:52,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 18:33:52,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 18:33:52,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:52,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 18:33:52,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:52,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981054023] [2025-03-16 18:33:52,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981054023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:52,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:33:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342971471] [2025-03-16 18:33:52,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:52,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:33:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:52,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:33:52,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:33:52,379 INFO L87 Difference]: Start difference. First operand 14593 states and 24175 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-16 18:33:54,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:54,583 INFO L93 Difference]: Finished difference Result 44054 states and 73780 transitions. [2025-03-16 18:33:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:33:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2025-03-16 18:33:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:54,757 INFO L225 Difference]: With dead ends: 44054 [2025-03-16 18:33:54,757 INFO L226 Difference]: Without dead ends: 29560 [2025-03-16 18:33:54,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:33:54,831 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 1848 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:54,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 595 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 18:33:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29560 states. [2025-03-16 18:33:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29560 to 29558. [2025-03-16 18:33:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29558 states, 22371 states have (on average 1.5706942023154977) internal successors, (35138), 23709 states have internal predecessors, (35138), 5550 states have call successors, (5550), 1132 states have call predecessors, (5550), 1636 states have return successors, (8553), 5524 states have call predecessors, (8553), 5545 states have call successors, (8553) [2025-03-16 18:33:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29558 states to 29558 states and 49241 transitions. [2025-03-16 18:33:56,298 INFO L78 Accepts]: Start accepts. Automaton has 29558 states and 49241 transitions. Word has length 166 [2025-03-16 18:33:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:33:56,299 INFO L471 AbstractCegarLoop]: Abstraction has 29558 states and 49241 transitions. [2025-03-16 18:33:56,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-16 18:33:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29558 states and 49241 transitions. [2025-03-16 18:33:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-16 18:33:56,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:33:56,306 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:33:56,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-16 18:33:56,306 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:33:56,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:33:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 957513796, now seen corresponding path program 1 times [2025-03-16 18:33:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:33:56,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773617235] [2025-03-16 18:33:56,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:33:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:33:56,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-16 18:33:56,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-16 18:33:56,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:33:56,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:33:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 18:33:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:33:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773617235] [2025-03-16 18:33:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773617235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:33:56,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:33:56,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:33:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928411900] [2025-03-16 18:33:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:33:56,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:33:56,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:33:56,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:33:56,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:56,558 INFO L87 Difference]: Start difference. First operand 29558 states and 49241 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 18:33:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:33:57,660 INFO L93 Difference]: Finished difference Result 29669 states and 49386 transitions. [2025-03-16 18:33:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:33:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 169 [2025-03-16 18:33:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:33:57,881 INFO L225 Difference]: With dead ends: 29669 [2025-03-16 18:33:57,881 INFO L226 Difference]: Without dead ends: 29648 [2025-03-16 18:33:57,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:33:57,893 INFO L435 NwaCegarLoop]: 825 mSDtfsCounter, 0 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:33:57,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4934 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:33:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29648 states. [2025-03-16 18:33:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29648 to 29648. [2025-03-16 18:33:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29648 states, 22461 states have (on average 1.567071813365389) internal successors, (35198), 23799 states have internal predecessors, (35198), 5550 states have call successors, (5550), 1132 states have call predecessors, (5550), 1636 states have return successors, (8553), 5524 states have call predecessors, (8553), 5545 states have call successors, (8553) [2025-03-16 18:34:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29648 states to 29648 states and 49301 transitions. [2025-03-16 18:34:00,089 INFO L78 Accepts]: Start accepts. Automaton has 29648 states and 49301 transitions. Word has length 169 [2025-03-16 18:34:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:00,090 INFO L471 AbstractCegarLoop]: Abstraction has 29648 states and 49301 transitions. [2025-03-16 18:34:00,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 18:34:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 29648 states and 49301 transitions. [2025-03-16 18:34:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-03-16 18:34:00,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:00,102 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-16 18:34:00,102 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 457581898, now seen corresponding path program 1 times [2025-03-16 18:34:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001997361] [2025-03-16 18:34:00,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:00,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:34:00,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:34:00,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:00,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-16 18:34:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001997361] [2025-03-16 18:34:00,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001997361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192180369] [2025-03-16 18:34:00,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:00,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:00,317 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:00,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-16 18:34:00,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 200 statements into 1 equivalence classes. [2025-03-16 18:34:00,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 200 of 200 statements. [2025-03-16 18:34:00,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:00,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:00,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:34:00,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-16 18:34:00,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:34:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192180369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:00,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:34:00,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-16 18:34:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272518895] [2025-03-16 18:34:00,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:00,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:00,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:00,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:34:00,800 INFO L87 Difference]: Start difference. First operand 29648 states and 49301 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:34:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:01,536 INFO L93 Difference]: Finished difference Result 43925 states and 72871 transitions. [2025-03-16 18:34:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 200 [2025-03-16 18:34:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:01,614 INFO L225 Difference]: With dead ends: 43925 [2025-03-16 18:34:01,614 INFO L226 Difference]: Without dead ends: 14373 [2025-03-16 18:34:01,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:34:01,704 INFO L435 NwaCegarLoop]: 811 mSDtfsCounter, 15 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:01,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2410 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2025-03-16 18:34:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14373. [2025-03-16 18:34:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 10902 states have (on average 1.5716382315171529) internal successors, (17134), 11540 states have internal predecessors, (17134), 2687 states have call successors, (2687), 568 states have call predecessors, (2687), 783 states have return successors, (3876), 2668 states have call predecessors, (3876), 2683 states have call successors, (3876) [2025-03-16 18:34:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 23697 transitions. [2025-03-16 18:34:02,401 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 23697 transitions. Word has length 200 [2025-03-16 18:34:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:02,401 INFO L471 AbstractCegarLoop]: Abstraction has 14373 states and 23697 transitions. [2025-03-16 18:34:02,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:34:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 23697 transitions. [2025-03-16 18:34:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-03-16 18:34:02,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:02,406 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:02,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-16 18:34:02,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-16 18:34:02,607 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:02,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 159092755, now seen corresponding path program 1 times [2025-03-16 18:34:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253378206] [2025-03-16 18:34:02,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:02,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:34:02,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:34:02,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:02,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-16 18:34:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253378206] [2025-03-16 18:34:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253378206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129194910] [2025-03-16 18:34:02,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:02,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:02,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:02,829 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:02,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-16 18:34:02,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:34:03,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:34:03,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:03,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:03,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 18:34:03,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 18:34:03,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 18:34:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-16 18:34:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129194910] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 18:34:03,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 18:34:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-03-16 18:34:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683174143] [2025-03-16 18:34:03,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 18:34:03,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-16 18:34:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:03,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-16 18:34:03,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-03-16 18:34:03,720 INFO L87 Difference]: Start difference. First operand 14373 states and 23697 transitions. Second operand has 23 states, 22 states have (on average 12.818181818181818) internal successors, (282), 19 states have internal predecessors, (282), 10 states have call successors, (54), 6 states have call predecessors, (54), 13 states have return successors, (55), 14 states have call predecessors, (55), 9 states have call successors, (55) [2025-03-16 18:34:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:13,118 INFO L93 Difference]: Finished difference Result 79738 states and 135097 transitions. [2025-03-16 18:34:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-16 18:34:13,118 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 12.818181818181818) internal successors, (282), 19 states have internal predecessors, (282), 10 states have call successors, (54), 6 states have call predecessors, (54), 13 states have return successors, (55), 14 states have call predecessors, (55), 9 states have call successors, (55) Word has length 197 [2025-03-16 18:34:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:13,662 INFO L225 Difference]: With dead ends: 79738 [2025-03-16 18:34:13,662 INFO L226 Difference]: Without dead ends: 65482 [2025-03-16 18:34:13,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 394 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=2085, Unknown=0, NotChecked=0, Total=2550 [2025-03-16 18:34:13,717 INFO L435 NwaCegarLoop]: 1477 mSDtfsCounter, 8560 mSDsluCounter, 12276 mSDsCounter, 0 mSdLazyCounter, 20478 mSolverCounterSat, 2415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8628 SdHoareTripleChecker+Valid, 13753 SdHoareTripleChecker+Invalid, 22893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2415 IncrementalHoareTripleChecker+Valid, 20478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:13,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8628 Valid, 13753 Invalid, 22893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2415 Valid, 20478 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-03-16 18:34:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65482 states. [2025-03-16 18:34:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65482 to 64778. [2025-03-16 18:34:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64778 states, 47913 states have (on average 1.5626239225262455) internal successors, (74870), 50931 states have internal predecessors, (74870), 13517 states have call successors, (13517), 2252 states have call predecessors, (13517), 3347 states have return successors, (21421), 13610 states have call predecessors, (21421), 13513 states have call successors, (21421) [2025-03-16 18:34:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64778 states to 64778 states and 109808 transitions. [2025-03-16 18:34:18,238 INFO L78 Accepts]: Start accepts. Automaton has 64778 states and 109808 transitions. Word has length 197 [2025-03-16 18:34:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:18,238 INFO L471 AbstractCegarLoop]: Abstraction has 64778 states and 109808 transitions. [2025-03-16 18:34:18,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 12.818181818181818) internal successors, (282), 19 states have internal predecessors, (282), 10 states have call successors, (54), 6 states have call predecessors, (54), 13 states have return successors, (55), 14 states have call predecessors, (55), 9 states have call successors, (55) [2025-03-16 18:34:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 64778 states and 109808 transitions. [2025-03-16 18:34:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-03-16 18:34:18,262 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:18,262 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:18,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-16 18:34:18,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:18,463 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:18,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:18,463 INFO L85 PathProgramCache]: Analyzing trace with hash 23904287, now seen corresponding path program 1 times [2025-03-16 18:34:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:18,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282102768] [2025-03-16 18:34:18,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:18,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:18,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-16 18:34:18,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-16 18:34:18,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:18,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-16 18:34:18,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:18,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282102768] [2025-03-16 18:34:18,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282102768] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855526592] [2025-03-16 18:34:18,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:18,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:18,548 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:18,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-16 18:34:18,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-16 18:34:18,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-16 18:34:18,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:18,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:18,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:34:18,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 18:34:18,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:34:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855526592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:18,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:34:18,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:34:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285322936] [2025-03-16 18:34:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:18,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:18,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:18,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:18,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:34:18,844 INFO L87 Difference]: Start difference. First operand 64778 states and 109808 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:34:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:22,970 INFO L93 Difference]: Finished difference Result 130900 states and 223071 transitions. [2025-03-16 18:34:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:34:22,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 198 [2025-03-16 18:34:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:23,391 INFO L225 Difference]: With dead ends: 130900 [2025-03-16 18:34:23,391 INFO L226 Difference]: Without dead ends: 66268 [2025-03-16 18:34:23,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:34:23,681 INFO L435 NwaCegarLoop]: 803 mSDtfsCounter, 10 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:34:23,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2374 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:34:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66268 states. [2025-03-16 18:34:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66268 to 66204. [2025-03-16 18:34:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66204 states, 49132 states have (on average 1.5624643816657169) internal successors, (76767), 52195 states have internal predecessors, (76767), 13517 states have call successors, (13517), 2424 states have call predecessors, (13517), 3554 states have return successors, (21257), 13600 states have call predecessors, (21257), 13513 states have call successors, (21257) [2025-03-16 18:34:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66204 states to 66204 states and 111541 transitions. [2025-03-16 18:34:28,481 INFO L78 Accepts]: Start accepts. Automaton has 66204 states and 111541 transitions. Word has length 198 [2025-03-16 18:34:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:34:28,482 INFO L471 AbstractCegarLoop]: Abstraction has 66204 states and 111541 transitions. [2025-03-16 18:34:28,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-16 18:34:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 66204 states and 111541 transitions. [2025-03-16 18:34:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-03-16 18:34:28,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:34:28,503 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:34:28,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-16 18:34:28,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:28,703 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:34:28,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:34:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2057250724, now seen corresponding path program 1 times [2025-03-16 18:34:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:34:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448874923] [2025-03-16 18:34:28,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:34:28,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:34:28,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:34:28,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:28,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-03-16 18:34:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:34:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448874923] [2025-03-16 18:34:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448874923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:34:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052146903] [2025-03-16 18:34:28,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:34:28,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:34:28,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:34:28,853 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:34:28,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-16 18:34:28,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 18:34:29,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 18:34:29,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:34:29,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:34:29,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:34:29,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:34:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-16 18:34:29,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:34:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052146903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:34:29,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:34:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-16 18:34:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296994224] [2025-03-16 18:34:29,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:34:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:34:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:34:29,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:34:29,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:34:29,152 INFO L87 Difference]: Start difference. First operand 66204 states and 111541 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-16 18:34:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:34:32,756 INFO L93 Difference]: Finished difference Result 113951 states and 191602 transitions. [2025-03-16 18:34:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:34:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 197 [2025-03-16 18:34:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:34:33,336 INFO L225 Difference]: With dead ends: 113951 [2025-03-16 18:34:33,336 INFO L226 Difference]: Without dead ends: 66204