/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 21:59:56,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 21:59:56,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 21:59:56,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 21:59:56,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 21:59:56,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 21:59:56,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 21:59:56,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 21:59:56,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 21:59:56,176 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 21:59:56,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 21:59:56,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 21:59:56,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 21:59:56,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 21:59:56,178 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 21:59:56,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 21:59:56,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 21:59:56,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 21:59:56,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 21:59:56,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 21:59:56,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 21:59:56,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 21:59:56,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 21:59:56,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 21:59:56,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 21:59:56,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 21:59:56,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 21:59:56,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 21:59:56,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 21:59:56,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 21:59:56,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:59:56,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 21:59:56,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 21:59:56,184 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 21:59:56,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 21:59:56,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 21:59:56,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 21:59:56,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 21:59:56,393 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 21:59:56,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2023-12-19 21:59:57,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 21:59:57,837 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 21:59:57,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2023-12-19 21:59:57,856 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b17e951e/81112207968e49e7aa72317f9fea89e7/FLAG7b55c06bf [2023-12-19 21:59:57,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b17e951e/81112207968e49e7aa72317f9fea89e7 [2023-12-19 21:59:57,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 21:59:57,870 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 21:59:57,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 21:59:57,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 21:59:57,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 21:59:57,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:59:57" (1/1) ... [2023-12-19 21:59:57,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b117e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:57, skipping insertion in model container [2023-12-19 21:59:57,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:59:57" (1/1) ... [2023-12-19 21:59:57,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 21:59:58,203 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2023-12-19 21:59:58,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:59:58,254 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 21:59:58,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-19 21:59:58,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2023-12-19 21:59:58,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [434] [2023-12-19 21:59:58,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2095] [2023-12-19 21:59:58,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2449] [2023-12-19 21:59:58,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2458] [2023-12-19 21:59:58,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2549] [2023-12-19 21:59:58,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3210] [2023-12-19 21:59:58,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3299] [2023-12-19 21:59:58,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3417] [2023-12-19 21:59:58,337 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2023-12-19 21:59:58,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 21:59:58,370 INFO L206 MainTranslator]: Completed translation [2023-12-19 21:59:58,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58 WrapperNode [2023-12-19 21:59:58,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 21:59:58,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 21:59:58,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 21:59:58,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 21:59:58,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,440 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 893 [2023-12-19 21:59:58,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 21:59:58,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 21:59:58,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 21:59:58,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 21:59:58,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,477 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]. [2023-12-19 21:59:58,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 21:59:58,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 21:59:58,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 21:59:58,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 21:59:58,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (1/1) ... [2023-12-19 21:59:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 21:59:58,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:59:58,585 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) [2023-12-19 21:59:58,636 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 [2023-12-19 21:59:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-19 21:59:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-19 21:59:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 21:59:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 21:59:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 21:59:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 21:59:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 21:59:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 21:59:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 21:59:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-12-19 21:59:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-12-19 21:59:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 21:59:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 21:59:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-19 21:59:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-19 21:59:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 21:59:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 21:59:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 21:59:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 21:59:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 21:59:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 21:59:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 21:59:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 21:59:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 21:59:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 21:59:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 21:59:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 21:59:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 21:59:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 21:59:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 21:59:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 21:59:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 21:59:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 21:59:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 21:59:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 21:59:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 21:59:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 21:59:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 21:59:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 21:59:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:59:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 21:59:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 21:59:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 21:59:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 21:59:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 21:59:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-12-19 21:59:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-12-19 21:59:58,832 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 21:59:58,834 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 21:59:59,578 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 21:59:59,644 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 21:59:59,644 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-19 21:59:59,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:59:59 BoogieIcfgContainer [2023-12-19 21:59:59,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 21:59:59,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 21:59:59,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 21:59:59,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 21:59:59,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:59:57" (1/3) ... [2023-12-19 21:59:59,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5a3410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:59:59, skipping insertion in model container [2023-12-19 21:59:59,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:59:58" (2/3) ... [2023-12-19 21:59:59,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5a3410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:59:59, skipping insertion in model container [2023-12-19 21:59:59,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:59:59" (3/3) ... [2023-12-19 21:59:59,652 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2023-12-19 21:59:59,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 21:59:59,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 21:59:59,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 21:59:59,726 INFO L357 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, mHoare=true, 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;@5dc6cea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 21:59:59,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 21:59:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-19 21:59:59,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 21:59:59,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:59:59,760 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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] [2023-12-19 21:59:59,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:59:59,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:59:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1784768629, now seen corresponding path program 1 times [2023-12-19 21:59:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:59:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728171031] [2023-12-19 21:59:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:59:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:59:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 22:00:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:00:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:00:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:00:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:00:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:00:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:00:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:00,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728171031] [2023-12-19 22:00:00,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728171031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:00,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307664060] [2023-12-19 22:00:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:00,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:00,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:00,750 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) [2023-12-19 22:00:00,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 22:00:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:01,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:00:01,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307664060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:01,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:01,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:00:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402082252] [2023-12-19 22:00:01,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:01,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:01,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:01,113 INFO L87 Difference]: Start difference. First operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:01,246 INFO L93 Difference]: Finished difference Result 1213 states and 2042 transitions. [2023-12-19 22:00:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:01,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-12-19 22:00:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:01,260 INFO L225 Difference]: With dead ends: 1213 [2023-12-19 22:00:01,260 INFO L226 Difference]: Without dead ends: 607 [2023-12-19 22:00:01,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:01,270 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 26 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:01,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2889 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-12-19 22:00:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2023-12-19 22:00:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 468 states have (on average 1.6837606837606838) internal successors, (788), 486 states have internal predecessors, (788), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-19 22:00:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1005 transitions. [2023-12-19 22:00:01,322 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1005 transitions. Word has length 84 [2023-12-19 22:00:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:01,322 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 1005 transitions. [2023-12-19 22:00:01,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1005 transitions. [2023-12-19 22:00:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 22:00:01,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:01,326 INFO L195 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] [2023-12-19 22:00:01,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:01,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 22:00:01,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:01,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1110920812, now seen corresponding path program 1 times [2023-12-19 22:00:01,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:01,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214418511] [2023-12-19 22:00:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 22:00:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:00:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:00:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:00:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:00:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214418511] [2023-12-19 22:00:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214418511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52374865] [2023-12-19 22:00:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:01,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:01,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:01,850 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) [2023-12-19 22:00:01,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 22:00:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:00:02,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:00:02,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:02,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52374865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:02,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:02,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-19 22:00:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109840669] [2023-12-19 22:00:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:00:02,156 INFO L87 Difference]: Start difference. First operand 607 states and 1005 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:02,298 INFO L93 Difference]: Finished difference Result 1224 states and 2028 transitions. [2023-12-19 22:00:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2023-12-19 22:00:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:02,302 INFO L225 Difference]: With dead ends: 1224 [2023-12-19 22:00:02,302 INFO L226 Difference]: Without dead ends: 622 [2023-12-19 22:00:02,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:00:02,305 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 114 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:02,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5667 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-19 22:00:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 619. [2023-12-19 22:00:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-12-19 22:00:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-12-19 22:00:02,347 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 74 [2023-12-19 22:00:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:02,347 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-12-19 22:00:02,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-12-19 22:00:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 22:00:02,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:02,349 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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] [2023-12-19 22:00:02,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 22:00:02,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:02,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1160837612, now seen corresponding path program 1 times [2023-12-19 22:00:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118464439] [2023-12-19 22:00:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 22:00:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 22:00:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:00:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:00:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:00:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:00:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 22:00:03,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118464439] [2023-12-19 22:00:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118464439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:03,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146365642] [2023-12-19 22:00:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:03,121 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) [2023-12-19 22:00:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 22:00:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:00:03,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:03,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146365642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:03,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:03,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-19 22:00:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010584678] [2023-12-19 22:00:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:00:03,456 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:03,597 INFO L93 Difference]: Finished difference Result 1242 states and 2059 transitions. [2023-12-19 22:00:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-12-19 22:00:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:03,601 INFO L225 Difference]: With dead ends: 1242 [2023-12-19 22:00:03,601 INFO L226 Difference]: Without dead ends: 630 [2023-12-19 22:00:03,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:00:03,604 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 125 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:03,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5655 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-19 22:00:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 619. [2023-12-19 22:00:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-12-19 22:00:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-12-19 22:00:03,624 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 87 [2023-12-19 22:00:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:03,624 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-12-19 22:00:03,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-12-19 22:00:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 22:00:03,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:03,626 INFO L195 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] [2023-12-19 22:00:03,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:03,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:03,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1406522373, now seen corresponding path program 1 times [2023-12-19 22:00:03,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:03,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800857304] [2023-12-19 22:00:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:00:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 22:00:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:00:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:00:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:00:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 22:00:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800857304] [2023-12-19 22:00:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800857304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109699423] [2023-12-19 22:00:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:04,012 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) [2023-12-19 22:00:04,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 22:00:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:04,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 22:00:04,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:04,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109699423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:04,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:04,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-19 22:00:04,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976792595] [2023-12-19 22:00:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:04,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:00:04,291 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:04,383 INFO L93 Difference]: Finished difference Result 1246 states and 2063 transitions. [2023-12-19 22:00:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2023-12-19 22:00:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:04,387 INFO L225 Difference]: With dead ends: 1246 [2023-12-19 22:00:04,387 INFO L226 Difference]: Without dead ends: 630 [2023-12-19 22:00:04,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:00:04,389 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:04,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2872 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:00:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-19 22:00:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 628. [2023-12-19 22:00:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-12-19 22:00:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-12-19 22:00:04,403 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 75 [2023-12-19 22:00:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:04,403 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-12-19 22:00:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-12-19 22:00:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 22:00:04,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:04,405 INFO L195 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] [2023-12-19 22:00:04,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:04,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:04,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1670932456, now seen corresponding path program 1 times [2023-12-19 22:00:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562629298] [2023-12-19 22:00:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:00:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:00:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:00:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:00:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:00:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562629298] [2023-12-19 22:00:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562629298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793809315] [2023-12-19 22:00:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:04,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:04,844 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) [2023-12-19 22:00:04,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 22:00:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:00:05,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:00:05,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793809315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-19 22:00:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620578549] [2023-12-19 22:00:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:00:05,136 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:05,261 INFO L93 Difference]: Finished difference Result 1251 states and 2062 transitions. [2023-12-19 22:00:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2023-12-19 22:00:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:05,264 INFO L225 Difference]: With dead ends: 1251 [2023-12-19 22:00:05,264 INFO L226 Difference]: Without dead ends: 641 [2023-12-19 22:00:05,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:00:05,266 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 136 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:05,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 5643 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-19 22:00:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 628. [2023-12-19 22:00:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-12-19 22:00:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-12-19 22:00:05,280 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 76 [2023-12-19 22:00:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:05,281 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-12-19 22:00:05,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-12-19 22:00:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 22:00:05,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:05,282 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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] [2023-12-19 22:00:05,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:05,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:05,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:05,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 519194320, now seen corresponding path program 1 times [2023-12-19 22:00:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287950691] [2023-12-19 22:00:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:05,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:00:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:00:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:00:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:00:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:00:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:00:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 22:00:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287950691] [2023-12-19 22:00:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287950691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666918137] [2023-12-19 22:00:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:05,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:05,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:05,943 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) [2023-12-19 22:00:05,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 22:00:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:06,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:06,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:06,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:06,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666918137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:06,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:06,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-19 22:00:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392696746] [2023-12-19 22:00:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:06,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:06,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:06,292 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:06,496 INFO L93 Difference]: Finished difference Result 1290 states and 2142 transitions. [2023-12-19 22:00:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:06,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-12-19 22:00:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:06,501 INFO L225 Difference]: With dead ends: 1290 [2023-12-19 22:00:06,501 INFO L226 Difference]: Without dead ends: 680 [2023-12-19 22:00:06,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:06,504 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 165 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:06,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2717 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:00:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-12-19 22:00:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 672. [2023-12-19 22:00:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-12-19 22:00:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-12-19 22:00:06,523 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 89 [2023-12-19 22:00:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:06,524 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-12-19 22:00:06,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-12-19 22:00:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 22:00:06,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:06,525 INFO L195 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] [2023-12-19 22:00:06,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:06,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:06,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:06,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1216356592, now seen corresponding path program 1 times [2023-12-19 22:00:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644094015] [2023-12-19 22:00:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:00:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:00:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:00:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:00:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:00:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:00:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644094015] [2023-12-19 22:00:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644094015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298800966] [2023-12-19 22:00:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:07,035 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) [2023-12-19 22:00:07,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 22:00:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:07,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:00:07,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298800966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-19 22:00:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979678481] [2023-12-19 22:00:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:00:07,359 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:07,539 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-12-19 22:00:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-12-19 22:00:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:07,543 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 22:00:07,543 INFO L226 Difference]: Without dead ends: 695 [2023-12-19 22:00:07,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:00:07,546 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 131 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6564 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:07,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6564 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-12-19 22:00:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-12-19 22:00:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-12-19 22:00:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-12-19 22:00:07,562 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 78 [2023-12-19 22:00:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:07,562 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-12-19 22:00:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-12-19 22:00:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 22:00:07,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:07,564 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:00:07,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:07,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:07,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash 681414586, now seen corresponding path program 1 times [2023-12-19 22:00:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951652302] [2023-12-19 22:00:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:00:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:00:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:00:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:00:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:00:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 22:00:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951652302] [2023-12-19 22:00:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951652302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589845318] [2023-12-19 22:00:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:08,353 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) [2023-12-19 22:00:08,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 22:00:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:08,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:08,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:08,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:08,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589845318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:08,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-19 22:00:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868503237] [2023-12-19 22:00:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:08,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:00:08,732 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:08,938 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-12-19 22:00:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:08,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-12-19 22:00:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:08,941 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 22:00:08,941 INFO L226 Difference]: Without dead ends: 695 [2023-12-19 22:00:08,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:00:08,944 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 141 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6552 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:08,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6552 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-12-19 22:00:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-12-19 22:00:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-12-19 22:00:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-12-19 22:00:08,959 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 91 [2023-12-19 22:00:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:08,959 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-12-19 22:00:08,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-12-19 22:00:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 22:00:08,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:08,960 INFO L195 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] [2023-12-19 22:00:08,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 22:00:09,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1800032555, now seen corresponding path program 1 times [2023-12-19 22:00:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188565337] [2023-12-19 22:00:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:00:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:00:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:00:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:00:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:00:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188565337] [2023-12-19 22:00:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188565337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044049836] [2023-12-19 22:00:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:09,374 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) [2023-12-19 22:00:09,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 22:00:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:09,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:00:09,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044049836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:09,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:09,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-19 22:00:09,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601489107] [2023-12-19 22:00:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:09,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:09,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:00:09,714 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:09,933 INFO L93 Difference]: Finished difference Result 1341 states and 2227 transitions. [2023-12-19 22:00:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-12-19 22:00:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:09,937 INFO L225 Difference]: With dead ends: 1341 [2023-12-19 22:00:09,937 INFO L226 Difference]: Without dead ends: 687 [2023-12-19 22:00:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:00:09,939 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 151 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6540 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:00:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-19 22:00:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 672. [2023-12-19 22:00:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-12-19 22:00:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-12-19 22:00:09,953 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 80 [2023-12-19 22:00:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:09,953 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-12-19 22:00:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-12-19 22:00:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 22:00:09,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:09,955 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2023-12-19 22:00:09,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:10,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:10,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 817387554, now seen corresponding path program 1 times [2023-12-19 22:00:10,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454551881] [2023-12-19 22:00:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:00:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:00:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:00:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:00:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:00:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:00:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-19 22:00:10,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454551881] [2023-12-19 22:00:10,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454551881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:10,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316834786] [2023-12-19 22:00:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:10,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:10,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:10,653 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) [2023-12-19 22:00:10,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 22:00:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:10,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:10,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:00:10,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316834786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:10,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:00:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094228208] [2023-12-19 22:00:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:10,923 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:11,026 INFO L93 Difference]: Finished difference Result 1315 states and 2189 transitions. [2023-12-19 22:00:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-12-19 22:00:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:11,030 INFO L225 Difference]: With dead ends: 1315 [2023-12-19 22:00:11,030 INFO L226 Difference]: Without dead ends: 672 [2023-12-19 22:00:11,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:11,032 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 35 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:11,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2870 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-19 22:00:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2023-12-19 22:00:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.683712121212121) internal successors, (889), 548 states have internal predecessors, (889), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-12-19 22:00:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1111 transitions. [2023-12-19 22:00:11,045 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1111 transitions. Word has length 92 [2023-12-19 22:00:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:11,046 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1111 transitions. [2023-12-19 22:00:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:00:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1111 transitions. [2023-12-19 22:00:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 22:00:11,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:11,047 INFO L195 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] [2023-12-19 22:00:11,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 22:00:11,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:11,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2108691594, now seen corresponding path program 1 times [2023-12-19 22:00:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056210285] [2023-12-19 22:00:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:00:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:00:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:00:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:00:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:00:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056210285] [2023-12-19 22:00:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056210285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233551385] [2023-12-19 22:00:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:11,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:11,464 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) [2023-12-19 22:00:11,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 22:00:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:11,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:00:11,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:00:11,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:11,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233551385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:11,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:11,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-19 22:00:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616978695] [2023-12-19 22:00:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:11,779 INFO L87 Difference]: Start difference. First operand 672 states and 1111 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:11,906 INFO L93 Difference]: Finished difference Result 1283 states and 2121 transitions. [2023-12-19 22:00:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2023-12-19 22:00:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:11,911 INFO L225 Difference]: With dead ends: 1283 [2023-12-19 22:00:11,911 INFO L226 Difference]: Without dead ends: 696 [2023-12-19 22:00:11,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:00:11,913 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 114 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:11,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5679 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-19 22:00:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2023-12-19 22:00:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-12-19 22:00:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-12-19 22:00:11,927 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 81 [2023-12-19 22:00:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:11,928 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-12-19 22:00:11,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-12-19 22:00:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 22:00:11,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:11,930 INFO L195 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] [2023-12-19 22:00:11,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 22:00:12,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:12,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash 246843287, now seen corresponding path program 1 times [2023-12-19 22:00:12,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:12,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835581069] [2023-12-19 22:00:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:00:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:00:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:00:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 22:00:12,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:12,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835581069] [2023-12-19 22:00:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835581069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:12,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124534422] [2023-12-19 22:00:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:12,339 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) [2023-12-19 22:00:12,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 22:00:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:12,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 22:00:12,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 22:00:12,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124534422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-19 22:00:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503583768] [2023-12-19 22:00:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:12,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:12,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:12,640 INFO L87 Difference]: Start difference. First operand 684 states and 1131 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:12,769 INFO L93 Difference]: Finished difference Result 1291 states and 2135 transitions. [2023-12-19 22:00:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:12,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-12-19 22:00:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:12,773 INFO L225 Difference]: With dead ends: 1291 [2023-12-19 22:00:12,773 INFO L226 Difference]: Without dead ends: 704 [2023-12-19 22:00:12,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:00:12,775 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 125 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:12,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5667 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-19 22:00:12,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 684. [2023-12-19 22:00:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-12-19 22:00:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-12-19 22:00:12,791 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 82 [2023-12-19 22:00:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:12,791 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-12-19 22:00:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:00:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-12-19 22:00:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 22:00:12,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:12,793 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:00:12,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:13,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 22:00:13,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:13,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:13,001 INFO L85 PathProgramCache]: Analyzing trace with hash 795038351, now seen corresponding path program 1 times [2023-12-19 22:00:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668002211] [2023-12-19 22:00:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:13,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:00:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:00:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:00:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:00:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:13,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668002211] [2023-12-19 22:00:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668002211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456550432] [2023-12-19 22:00:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:13,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:13,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:13,230 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) [2023-12-19 22:00:13,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 22:00:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:13,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 22:00:13,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456550432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 22:00:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388066526] [2023-12-19 22:00:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:00:13,468 INFO L87 Difference]: Start difference. First operand 684 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:13,544 INFO L93 Difference]: Finished difference Result 1335 states and 2217 transitions. [2023-12-19 22:00:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 22:00:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2023-12-19 22:00:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:13,548 INFO L225 Difference]: With dead ends: 1335 [2023-12-19 22:00:13,548 INFO L226 Difference]: Without dead ends: 684 [2023-12-19 22:00:13,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:13,551 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 10 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:13,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2872 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:13,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-19 22:00:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-12-19 22:00:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.675977653631285) internal successors, (900), 559 states have internal predecessors, (900), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-12-19 22:00:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1128 transitions. [2023-12-19 22:00:13,569 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1128 transitions. Word has length 82 [2023-12-19 22:00:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:13,569 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1128 transitions. [2023-12-19 22:00:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1128 transitions. [2023-12-19 22:00:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 22:00:13,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:13,571 INFO L195 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] [2023-12-19 22:00:13,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:13,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 22:00:13,778 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:13,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2019705074, now seen corresponding path program 1 times [2023-12-19 22:00:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722213596] [2023-12-19 22:00:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:00:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:00:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:00:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 22:00:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722213596] [2023-12-19 22:00:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722213596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838245958] [2023-12-19 22:00:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:14,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:14,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:14,008 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) [2023-12-19 22:00:14,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 22:00:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:00:14,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 22:00:14,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838245958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:14,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:14,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 22:00:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461554559] [2023-12-19 22:00:14,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:14,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:14,250 INFO L87 Difference]: Start difference. First operand 684 states and 1128 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:14,391 INFO L93 Difference]: Finished difference Result 1331 states and 2212 transitions. [2023-12-19 22:00:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-12-19 22:00:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:14,394 INFO L225 Difference]: With dead ends: 1331 [2023-12-19 22:00:14,394 INFO L226 Difference]: Without dead ends: 744 [2023-12-19 22:00:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:14,397 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 235 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:14,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2697 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-19 22:00:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 728. [2023-12-19 22:00:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-12-19 22:00:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-12-19 22:00:14,411 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 83 [2023-12-19 22:00:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:14,411 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-12-19 22:00:14,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-12-19 22:00:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 22:00:14,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:14,412 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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] [2023-12-19 22:00:14,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:14,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:14,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:14,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1908194401, now seen corresponding path program 1 times [2023-12-19 22:00:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034506247] [2023-12-19 22:00:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:00:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:00:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:00:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:00:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:00:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034506247] [2023-12-19 22:00:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034506247] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712166613] [2023-12-19 22:00:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:15,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:15,029 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) [2023-12-19 22:00:15,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 22:00:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:15,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:00:15,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:15,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712166613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:15,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:15,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-19 22:00:15,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653949042] [2023-12-19 22:00:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:15,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:15,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:15,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:15,395 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:15,588 INFO L93 Difference]: Finished difference Result 1345 states and 2226 transitions. [2023-12-19 22:00:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-12-19 22:00:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:15,593 INFO L225 Difference]: With dead ends: 1345 [2023-12-19 22:00:15,593 INFO L226 Difference]: Without dead ends: 758 [2023-12-19 22:00:15,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:00:15,604 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 132 mSDsluCounter, 5599 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6547 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:15,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6547 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-12-19 22:00:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 728. [2023-12-19 22:00:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-12-19 22:00:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-12-19 22:00:15,629 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 95 [2023-12-19 22:00:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:15,629 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-12-19 22:00:15,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-12-19 22:00:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 22:00:15,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:15,631 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-19 22:00:15,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 22:00:15,858 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:15,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1453236034, now seen corresponding path program 1 times [2023-12-19 22:00:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:15,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014317622] [2023-12-19 22:00:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:00:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:00:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:00:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:00:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:00:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 22:00:16,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:16,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014317622] [2023-12-19 22:00:16,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014317622] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:16,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968380585] [2023-12-19 22:00:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:16,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:16,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:16,279 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) [2023-12-19 22:00:16,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 22:00:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:16,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:16,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:00:16,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:16,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968380585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:16,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:16,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-12-19 22:00:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467058448] [2023-12-19 22:00:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:16,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:00:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:00:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:16,586 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:16,761 INFO L93 Difference]: Finished difference Result 1337 states and 2213 transitions. [2023-12-19 22:00:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:16,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-12-19 22:00:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:16,765 INFO L225 Difference]: With dead ends: 1337 [2023-12-19 22:00:16,765 INFO L226 Difference]: Without dead ends: 750 [2023-12-19 22:00:16,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:00:16,767 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 142 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6535 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:16,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6535 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-12-19 22:00:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 728. [2023-12-19 22:00:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-12-19 22:00:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-12-19 22:00:16,782 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 96 [2023-12-19 22:00:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:16,783 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-12-19 22:00:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:00:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-12-19 22:00:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 22:00:16,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:16,784 INFO L195 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] [2023-12-19 22:00:16,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 22:00:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 22:00:16,991 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:16,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 641277355, now seen corresponding path program 1 times [2023-12-19 22:00:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114946527] [2023-12-19 22:00:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:00:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:00:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:00:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 22:00:17,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114946527] [2023-12-19 22:00:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114946527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138110111] [2023-12-19 22:00:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:17,182 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) [2023-12-19 22:00:17,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 22:00:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:00:17,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:00:17,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138110111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:17,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-19 22:00:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624145855] [2023-12-19 22:00:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:17,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:00:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:00:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:00:17,510 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:17,616 INFO L93 Difference]: Finished difference Result 1892 states and 3154 transitions. [2023-12-19 22:00:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:00:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2023-12-19 22:00:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:17,633 INFO L225 Difference]: With dead ends: 1892 [2023-12-19 22:00:17,634 INFO L226 Difference]: Without dead ends: 1309 [2023-12-19 22:00:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:00:17,636 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 924 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:17,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1956 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-12-19 22:00:17,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1244. [2023-12-19 22:00:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 992 states have (on average 1.6945564516129032) internal successors, (1681), 1023 states have internal predecessors, (1681), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2023-12-19 22:00:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 2076 transitions. [2023-12-19 22:00:17,666 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 2076 transitions. Word has length 85 [2023-12-19 22:00:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:17,666 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 2076 transitions. [2023-12-19 22:00:17,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:00:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 2076 transitions. [2023-12-19 22:00:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:00:17,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:17,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-12-19 22:00:17,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 22:00:17,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:17,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -936541888, now seen corresponding path program 1 times [2023-12-19 22:00:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059106488] [2023-12-19 22:00:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:00:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:00:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:00:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:00:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:00:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:00:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:00:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 22:00:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:00:18,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059106488] [2023-12-19 22:00:18,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059106488] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948609414] [2023-12-19 22:00:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:18,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:18,286 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) [2023-12-19 22:00:18,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 22:00:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:18,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:00:18,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:00:18,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:18,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948609414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:18,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 22:00:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654259153] [2023-12-19 22:00:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:00:18,616 INFO L87 Difference]: Start difference. First operand 1244 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:18,750 INFO L93 Difference]: Finished difference Result 3160 states and 5259 transitions. [2023-12-19 22:00:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-12-19 22:00:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:18,758 INFO L225 Difference]: With dead ends: 3160 [2023-12-19 22:00:18,758 INFO L226 Difference]: Without dead ends: 2061 [2023-12-19 22:00:18,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:18,762 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 997 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:18,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 3301 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-12-19 22:00:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2053. [2023-12-19 22:00:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1628 states have (on average 1.6683046683046683) internal successors, (2716), 1662 states have internal predecessors, (2716), 327 states have call successors, (327), 94 states have call predecessors, (327), 97 states have return successors, (359), 312 states have call predecessors, (359), 321 states have call successors, (359) [2023-12-19 22:00:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3402 transitions. [2023-12-19 22:00:18,825 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3402 transitions. Word has length 135 [2023-12-19 22:00:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:18,825 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 3402 transitions. [2023-12-19 22:00:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3402 transitions. [2023-12-19 22:00:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 22:00:18,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:18,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-12-19 22:00:18,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 22:00:19,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 22:00:19,064 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:19,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1380260946, now seen corresponding path program 1 times [2023-12-19 22:00:19,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:19,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142775998] [2023-12-19 22:00:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:19,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:00:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:00:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:00:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:00:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:00:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:00:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:00:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-19 22:00:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142775998] [2023-12-19 22:00:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142775998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479206909] [2023-12-19 22:00:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:19,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:19,500 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) [2023-12-19 22:00:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 22:00:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:19,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:00:19,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:00:19,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479206909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-19 22:00:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638281891] [2023-12-19 22:00:19,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:00:19,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:19,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:00:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:19,867 INFO L87 Difference]: Start difference. First operand 2053 states and 3402 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:20,404 INFO L93 Difference]: Finished difference Result 3993 states and 6749 transitions. [2023-12-19 22:00:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:00:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2023-12-19 22:00:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:20,412 INFO L225 Difference]: With dead ends: 3993 [2023-12-19 22:00:20,412 INFO L226 Difference]: Without dead ends: 2085 [2023-12-19 22:00:20,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:20,420 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:20,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:00:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2023-12-19 22:00:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2085. [2023-12-19 22:00:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1656 states have (on average 1.6690821256038648) internal successors, (2764), 1690 states have internal predecessors, (2764), 327 states have call successors, (327), 98 states have call predecessors, (327), 101 states have return successors, (363), 312 states have call predecessors, (363), 321 states have call successors, (363) [2023-12-19 22:00:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3454 transitions. [2023-12-19 22:00:20,469 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3454 transitions. Word has length 136 [2023-12-19 22:00:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:20,469 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3454 transitions. [2023-12-19 22:00:20,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3454 transitions. [2023-12-19 22:00:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 22:00:20,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:20,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-12-19 22:00:20,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:20,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:20,680 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:20,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1009203572, now seen corresponding path program 1 times [2023-12-19 22:00:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057708908] [2023-12-19 22:00:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:00:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:00:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:00:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:00:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:00:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 22:00:21,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:21,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057708908] [2023-12-19 22:00:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057708908] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297140314] [2023-12-19 22:00:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:21,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:21,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:21,106 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) [2023-12-19 22:00:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 22:00:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:21,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:00:21,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:00:21,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297140314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-19 22:00:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345985817] [2023-12-19 22:00:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:00:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:00:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:21,477 INFO L87 Difference]: Start difference. First operand 2085 states and 3454 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:22,025 INFO L93 Difference]: Finished difference Result 4057 states and 6841 transitions. [2023-12-19 22:00:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:00:22,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 138 [2023-12-19 22:00:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:22,035 INFO L225 Difference]: With dead ends: 4057 [2023-12-19 22:00:22,035 INFO L226 Difference]: Without dead ends: 2117 [2023-12-19 22:00:22,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:22,044 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:22,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 22:00:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-12-19 22:00:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2023-12-19 22:00:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1684 states have (on average 1.669833729216152) internal successors, (2812), 1718 states have internal predecessors, (2812), 327 states have call successors, (327), 102 states have call predecessors, (327), 105 states have return successors, (367), 312 states have call predecessors, (367), 321 states have call successors, (367) [2023-12-19 22:00:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3506 transitions. [2023-12-19 22:00:22,110 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3506 transitions. Word has length 138 [2023-12-19 22:00:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:22,111 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 3506 transitions. [2023-12-19 22:00:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3506 transitions. [2023-12-19 22:00:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-19 22:00:22,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:22,116 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:00:22,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:22,323 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:22,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash -23614468, now seen corresponding path program 1 times [2023-12-19 22:00:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571294201] [2023-12-19 22:00:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:00:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:00:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:00:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:00:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:00:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:00:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:00:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:00:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:00:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:00:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 22:00:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-19 22:00:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-19 22:00:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-19 22:00:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 22:00:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571294201] [2023-12-19 22:00:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571294201] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435562582] [2023-12-19 22:00:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:22,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:22,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:22,855 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) [2023-12-19 22:00:22,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 22:00:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:23,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:00:23,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-19 22:00:23,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:23,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435562582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:23,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:23,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-19 22:00:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692825016] [2023-12-19 22:00:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:23,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:00:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:00:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:23,292 INFO L87 Difference]: Start difference. First operand 2117 states and 3506 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 22:00:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:23,757 INFO L93 Difference]: Finished difference Result 4121 states and 6933 transitions. [2023-12-19 22:00:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:00:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 207 [2023-12-19 22:00:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:23,768 INFO L225 Difference]: With dead ends: 4121 [2023-12-19 22:00:23,768 INFO L226 Difference]: Without dead ends: 2149 [2023-12-19 22:00:23,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:23,778 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 930 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:23,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2423 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:00:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-19 22:00:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-19 22:00:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1712 states have (on average 1.6705607476635513) internal successors, (2860), 1746 states have internal predecessors, (2860), 327 states have call successors, (327), 106 states have call predecessors, (327), 109 states have return successors, (371), 312 states have call predecessors, (371), 321 states have call successors, (371) [2023-12-19 22:00:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3558 transitions. [2023-12-19 22:00:23,838 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3558 transitions. Word has length 207 [2023-12-19 22:00:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:23,838 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3558 transitions. [2023-12-19 22:00:23,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 22:00:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3558 transitions. [2023-12-19 22:00:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 22:00:23,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:23,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2023-12-19 22:00:23,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 22:00:24,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:24,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:24,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -262288660, now seen corresponding path program 1 times [2023-12-19 22:00:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760752604] [2023-12-19 22:00:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:00:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:00:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:00:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:00:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:00:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 22:00:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:00:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760752604] [2023-12-19 22:00:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760752604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289978277] [2023-12-19 22:00:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:24,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:24,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:24,498 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) [2023-12-19 22:00:24,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 22:00:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:24,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:00:24,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:00:24,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:24,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289978277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:24,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:24,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-19 22:00:24,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451058873] [2023-12-19 22:00:24,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:24,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:00:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:00:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:00:24,848 INFO L87 Difference]: Start difference. First operand 2149 states and 3558 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:25,302 INFO L93 Difference]: Finished difference Result 4185 states and 7025 transitions. [2023-12-19 22:00:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:00:25,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2023-12-19 22:00:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:25,326 INFO L225 Difference]: With dead ends: 4185 [2023-12-19 22:00:25,327 INFO L226 Difference]: Without dead ends: 2181 [2023-12-19 22:00:25,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:25,333 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 927 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:25,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2423 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:00:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-12-19 22:00:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2023-12-19 22:00:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1740 states have (on average 1.671264367816092) internal successors, (2908), 1774 states have internal predecessors, (2908), 327 states have call successors, (327), 110 states have call predecessors, (327), 113 states have return successors, (375), 312 states have call predecessors, (375), 321 states have call successors, (375) [2023-12-19 22:00:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3610 transitions. [2023-12-19 22:00:25,381 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3610 transitions. Word has length 142 [2023-12-19 22:00:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3610 transitions. [2023-12-19 22:00:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:00:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3610 transitions. [2023-12-19 22:00:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 22:00:25,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:25,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:00:25,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:25,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:25,593 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:25,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2112648366, now seen corresponding path program 1 times [2023-12-19 22:00:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195752433] [2023-12-19 22:00:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:00:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:00:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:00:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:00:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:00:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 22:00:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 22:00:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:00:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195752433] [2023-12-19 22:00:26,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195752433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008560523] [2023-12-19 22:00:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:26,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:26,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:26,011 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) [2023-12-19 22:00:26,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 22:00:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:00:26,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:00:26,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008560523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-12-19 22:00:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940993354] [2023-12-19 22:00:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:00:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:00:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:00:26,298 INFO L87 Difference]: Start difference. First operand 2181 states and 3610 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:26,386 INFO L93 Difference]: Finished difference Result 4344 states and 7205 transitions. [2023-12-19 22:00:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:00:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-12-19 22:00:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:26,395 INFO L225 Difference]: With dead ends: 4344 [2023-12-19 22:00:26,395 INFO L226 Difference]: Without dead ends: 2147 [2023-12-19 22:00:26,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:00:26,401 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 13 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:26,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2871 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:00:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2023-12-19 22:00:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2147. [2023-12-19 22:00:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1709 states have (on average 1.6617905207723815) internal successors, (2840), 1741 states have internal predecessors, (2840), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-12-19 22:00:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3538 transitions. [2023-12-19 22:00:26,447 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3538 transitions. Word has length 144 [2023-12-19 22:00:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:26,447 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3538 transitions. [2023-12-19 22:00:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3538 transitions. [2023-12-19 22:00:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 22:00:26,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:26,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:00:26,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:26,659 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:26,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash -221744465, now seen corresponding path program 1 times [2023-12-19 22:00:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:26,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581199250] [2023-12-19 22:00:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:00:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:00:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:00:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:00:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 22:00:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:00:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581199250] [2023-12-19 22:00:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581199250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777659106] [2023-12-19 22:00:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:27,140 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) [2023-12-19 22:00:27,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 22:00:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 22:00:27,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 22:00:27,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:00:27,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777659106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:27,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:00:27,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-12-19 22:00:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283837095] [2023-12-19 22:00:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:27,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:00:27,448 INFO L87 Difference]: Start difference. First operand 2147 states and 3538 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:00:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:27,587 INFO L93 Difference]: Finished difference Result 4316 states and 7110 transitions. [2023-12-19 22:00:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:00:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2023-12-19 22:00:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:27,595 INFO L225 Difference]: With dead ends: 4316 [2023-12-19 22:00:27,596 INFO L226 Difference]: Without dead ends: 2182 [2023-12-19 22:00:27,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:00:27,601 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 134 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:27,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5654 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:00:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2023-12-19 22:00:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2140. [2023-12-19 22:00:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1702 states have (on average 1.6592244418331374) internal successors, (2824), 1734 states have internal predecessors, (2824), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-12-19 22:00:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3522 transitions. [2023-12-19 22:00:27,648 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3522 transitions. Word has length 145 [2023-12-19 22:00:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:27,649 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3522 transitions. [2023-12-19 22:00:27,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:00:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3522 transitions. [2023-12-19 22:00:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 22:00:27,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:27,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:00:27,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 22:00:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:27,861 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:27,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash 556571124, now seen corresponding path program 1 times [2023-12-19 22:00:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489949557] [2023-12-19 22:00:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:00:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:00:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:00:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 22:00:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:00:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489949557] [2023-12-19 22:00:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489949557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:00:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207327306] [2023-12-19 22:00:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:00:28,339 INFO L87 Difference]: Start difference. First operand 2140 states and 3522 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:33,003 INFO L93 Difference]: Finished difference Result 4948 states and 8228 transitions. [2023-12-19 22:00:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:00:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-12-19 22:00:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:33,012 INFO L225 Difference]: With dead ends: 4948 [2023-12-19 22:00:33,012 INFO L226 Difference]: Without dead ends: 2904 [2023-12-19 22:00:33,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:00:33,016 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1165 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:33,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1539 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:00:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2023-12-19 22:00:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2188. [2023-12-19 22:00:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1741 states have (on average 1.6547960941987363) internal successors, (2881), 1773 states have internal predecessors, (2881), 332 states have call successors, (332), 110 states have call predecessors, (332), 114 states have return successors, (384), 318 states have call predecessors, (384), 326 states have call successors, (384) [2023-12-19 22:00:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3597 transitions. [2023-12-19 22:00:33,250 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3597 transitions. Word has length 146 [2023-12-19 22:00:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:33,250 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3597 transitions. [2023-12-19 22:00:33,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3597 transitions. [2023-12-19 22:00:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 22:00:33,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:33,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2023-12-19 22:00:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 22:00:33,253 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1894389726, now seen corresponding path program 1 times [2023-12-19 22:00:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211821052] [2023-12-19 22:00:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:00:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:00:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:00:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:00:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:00:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 22:00:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:00:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211821052] [2023-12-19 22:00:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211821052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:00:33,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:00:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:00:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189658476] [2023-12-19 22:00:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:00:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:00:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:00:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:00:33,715 INFO L87 Difference]: Start difference. First operand 2188 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:00:38,745 INFO L93 Difference]: Finished difference Result 5005 states and 8307 transitions. [2023-12-19 22:00:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:00:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-12-19 22:00:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:00:38,756 INFO L225 Difference]: With dead ends: 5005 [2023-12-19 22:00:38,756 INFO L226 Difference]: Without dead ends: 2822 [2023-12-19 22:00:38,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:00:38,761 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1091 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:00:38,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1536 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:00:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2023-12-19 22:00:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2161. [2023-12-19 22:00:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1717 states have (on average 1.6517181129877694) internal successors, (2836), 1747 states have internal predecessors, (2836), 331 states have call successors, (331), 110 states have call predecessors, (331), 112 states have return successors, (381), 317 states have call predecessors, (381), 325 states have call successors, (381) [2023-12-19 22:00:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3548 transitions. [2023-12-19 22:00:39,022 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3548 transitions. Word has length 146 [2023-12-19 22:00:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:00:39,023 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 3548 transitions. [2023-12-19 22:00:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 22:00:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3548 transitions. [2023-12-19 22:00:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-19 22:00:39,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:00:39,027 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:00:39,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 22:00:39,027 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:00:39,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:00:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1257170177, now seen corresponding path program 1 times [2023-12-19 22:00:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:00:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675805336] [2023-12-19 22:00:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:00:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:00:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:00:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:00:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:00:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:00:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 22:00:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:00:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:00:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:00:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:00:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:00:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-19 22:00:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-19 22:00:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-19 22:00:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 22:00:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:00:40,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675805336] [2023-12-19 22:00:40,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675805336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:00:40,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882770552] [2023-12-19 22:00:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:00:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:00:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:00:40,523 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) [2023-12-19 22:00:40,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 22:00:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:00:40,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 22:00:40,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:00:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 22:00:41,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:00:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-19 22:00:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882770552] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:00:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:00:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6] total 30 [2023-12-19 22:00:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604574806] [2023-12-19 22:00:41,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:00:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 22:00:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:00:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 22:00:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-12-19 22:00:41,420 INFO L87 Difference]: Start difference. First operand 2161 states and 3548 transitions. Second operand has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-12-19 22:02:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:17,795 INFO L93 Difference]: Finished difference Result 36752 states and 69475 transitions. [2023-12-19 22:02:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2023-12-19 22:02:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) Word has length 218 [2023-12-19 22:02:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:17,989 INFO L225 Difference]: With dead ends: 36752 [2023-12-19 22:02:17,989 INFO L226 Difference]: Without dead ends: 34184 [2023-12-19 22:02:18,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 641 SyntacticMatches, 5 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63206 ImplicationChecksByTransitivity, 52.6s TimeCoverageRelationStatistics Valid=17077, Invalid=116513, Unknown=0, NotChecked=0, Total=133590 [2023-12-19 22:02:18,054 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 28144 mSDsluCounter, 13487 mSDsCounter, 0 mSdLazyCounter, 41065 mSolverCounterSat, 12443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28155 SdHoareTripleChecker+Valid, 14544 SdHoareTripleChecker+Invalid, 53508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 12443 IncrementalHoareTripleChecker+Valid, 41065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:18,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28155 Valid, 14544 Invalid, 53508 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [12443 Valid, 41065 Invalid, 0 Unknown, 0 Unchecked, 36.1s Time] [2023-12-19 22:02:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34184 states. [2023-12-19 22:02:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34184 to 10909. [2023-12-19 22:02:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 8525 states have (on average 1.5656304985337244) internal successors, (13347), 8706 states have internal predecessors, (13347), 1668 states have call successors, (1668), 657 states have call predecessors, (1668), 715 states have return successors, (2880), 1605 states have call predecessors, (2880), 1648 states have call successors, (2880) [2023-12-19 22:02:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 17895 transitions. [2023-12-19 22:02:20,581 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 17895 transitions. Word has length 218 [2023-12-19 22:02:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:20,582 INFO L495 AbstractCegarLoop]: Abstraction has 10909 states and 17895 transitions. [2023-12-19 22:02:20,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-12-19 22:02:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 17895 transitions. [2023-12-19 22:02:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 22:02:20,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:20,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:02:20,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 22:02:20,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:20,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 818593007, now seen corresponding path program 1 times [2023-12-19 22:02:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:20,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270465911] [2023-12-19 22:02:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:02:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:02:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:02:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:02:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 22:02:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:21,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270465911] [2023-12-19 22:02:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270465911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249862675] [2023-12-19 22:02:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:21,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:21,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:21,613 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) [2023-12-19 22:02:21,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 22:02:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:21,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 22:02:21,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 22:02:22,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249862675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-12-19 22:02:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353458672] [2023-12-19 22:02:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:02:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:02:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:02:22,060 INFO L87 Difference]: Start difference. First operand 10909 states and 17895 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-19 22:02:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:25,783 INFO L93 Difference]: Finished difference Result 20136 states and 33516 transitions. [2023-12-19 22:02:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:02:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 147 [2023-12-19 22:02:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:25,825 INFO L225 Difference]: With dead ends: 20136 [2023-12-19 22:02:25,825 INFO L226 Difference]: Without dead ends: 10390 [2023-12-19 22:02:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:02:25,855 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2283 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:25,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 1053 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 22:02:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2023-12-19 22:02:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 9902. [2023-12-19 22:02:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9902 states, 7598 states have (on average 1.578441695182943) internal successors, (11993), 7845 states have internal predecessors, (11993), 1719 states have call successors, (1719), 537 states have call predecessors, (1719), 584 states have return successors, (2664), 1627 states have call predecessors, (2664), 1699 states have call successors, (2664) [2023-12-19 22:02:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9902 states to 9902 states and 16376 transitions. [2023-12-19 22:02:27,634 INFO L78 Accepts]: Start accepts. Automaton has 9902 states and 16376 transitions. Word has length 147 [2023-12-19 22:02:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:27,635 INFO L495 AbstractCegarLoop]: Abstraction has 9902 states and 16376 transitions. [2023-12-19 22:02:27,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-19 22:02:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9902 states and 16376 transitions. [2023-12-19 22:02:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 22:02:27,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:27,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:02:27,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-19 22:02:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 22:02:27,847 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1235989613, now seen corresponding path program 1 times [2023-12-19 22:02:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609360867] [2023-12-19 22:02:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:02:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:02:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:02:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 22:02:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 22:02:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 22:02:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:02:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609360867] [2023-12-19 22:02:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609360867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:02:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373007797] [2023-12-19 22:02:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:28,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:02:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:02:28,550 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) [2023-12-19 22:02:28,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 22:02:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:28,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 22:02:28,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:02:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:02:28,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:02:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373007797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:28,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:02:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-19 22:02:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955664350] [2023-12-19 22:02:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:02:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:02:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:02:28,960 INFO L87 Difference]: Start difference. First operand 9902 states and 16376 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:02:35,902 INFO L93 Difference]: Finished difference Result 30703 states and 51728 transitions. [2023-12-19 22:02:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:02:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-12-19 22:02:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:02:36,037 INFO L225 Difference]: With dead ends: 30703 [2023-12-19 22:02:36,037 INFO L226 Difference]: Without dead ends: 21981 [2023-12-19 22:02:36,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:02:36,076 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3017 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 5437 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 5437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:02:36,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3205 Valid, 1498 Invalid, 6015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 5437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 22:02:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21981 states. [2023-12-19 22:02:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21981 to 21607. [2023-12-19 22:02:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21607 states, 16431 states have (on average 1.5654555413547562) internal successors, (25722), 17009 states have internal predecessors, (25722), 3893 states have call successors, (3893), 1145 states have call predecessors, (3893), 1282 states have return successors, (6326), 3704 states have call predecessors, (6326), 3867 states have call successors, (6326) [2023-12-19 22:02:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21607 states to 21607 states and 35941 transitions. [2023-12-19 22:02:40,057 INFO L78 Accepts]: Start accepts. Automaton has 21607 states and 35941 transitions. Word has length 147 [2023-12-19 22:02:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:02:40,057 INFO L495 AbstractCegarLoop]: Abstraction has 21607 states and 35941 transitions. [2023-12-19 22:02:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:02:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21607 states and 35941 transitions. [2023-12-19 22:02:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 22:02:40,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:02:40,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:02:40,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 22:02:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 22:02:40,271 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:02:40,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:02:40,271 INFO L85 PathProgramCache]: Analyzing trace with hash 557265501, now seen corresponding path program 1 times [2023-12-19 22:02:40,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:02:40,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252620247] [2023-12-19 22:02:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:02:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:02:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:02:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:02:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:02:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:02:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:02:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:02:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:02:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:02:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:02:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:02:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 22:02:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 22:02:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:02:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 22:02:40,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:02:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252620247] [2023-12-19 22:02:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252620247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:02:40,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:02:40,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:02:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282310945] [2023-12-19 22:02:40,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:02:40,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:02:40,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:02:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:02:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:02:40,875 INFO L87 Difference]: Start difference. First operand 21607 states and 35941 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 22:03:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:03:08,757 INFO L93 Difference]: Finished difference Result 93781 states and 164313 transitions. [2023-12-19 22:03:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 22:03:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2023-12-19 22:03:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:03:09,452 INFO L225 Difference]: With dead ends: 93781 [2023-12-19 22:03:09,452 INFO L226 Difference]: Without dead ends: 73852 [2023-12-19 22:03:09,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2023-12-19 22:03:09,582 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 5906 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 6060 mSolverCounterSat, 2033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 8093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2033 IncrementalHoareTripleChecker+Valid, 6060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:03:09,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5979 Valid, 2230 Invalid, 8093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2033 Valid, 6060 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-19 22:03:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73852 states. [2023-12-19 22:03:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73852 to 27856. [2023-12-19 22:03:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27856 states, 21259 states have (on average 1.566630603509102) internal successors, (33305), 21940 states have internal predecessors, (33305), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-12-19 22:03:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 46499 transitions. [2023-12-19 22:03:16,292 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 46499 transitions. Word has length 151 [2023-12-19 22:03:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:03:16,292 INFO L495 AbstractCegarLoop]: Abstraction has 27856 states and 46499 transitions. [2023-12-19 22:03:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 22:03:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 46499 transitions. [2023-12-19 22:03:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 22:03:16,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:03:16,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:03:16,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 22:03:16,300 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:03:16,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:03:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash 484878943, now seen corresponding path program 1 times [2023-12-19 22:03:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:03:16,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674449987] [2023-12-19 22:03:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:03:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:03:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:03:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:03:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:03:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:03:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:03:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 22:03:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 22:03:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:03:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:03:16,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674449987] [2023-12-19 22:03:16,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674449987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:03:16,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298468858] [2023-12-19 22:03:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:16,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:03:16,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:03:16,962 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) [2023-12-19 22:03:16,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 22:03:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:17,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:03:17,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:03:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:03:17,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:03:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298468858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:03:17,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:03:17,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-12-19 22:03:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728889431] [2023-12-19 22:03:17,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:03:17,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:03:17,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:03:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:03:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:03:17,338 INFO L87 Difference]: Start difference. First operand 27856 states and 46499 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:03:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:03:23,487 INFO L93 Difference]: Finished difference Result 28009 states and 46898 transitions. [2023-12-19 22:03:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:03:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2023-12-19 22:03:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:03:23,608 INFO L225 Difference]: With dead ends: 28009 [2023-12-19 22:03:23,608 INFO L226 Difference]: Without dead ends: 28006 [2023-12-19 22:03:23,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-12-19 22:03:23,626 INFO L413 NwaCegarLoop]: 1779 mSDtfsCounter, 933 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 7856 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:03:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 7856 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 22:03:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28006 states. [2023-12-19 22:03:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28006 to 27856. [2023-12-19 22:03:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27856 states, 21259 states have (on average 1.5654546309798203) internal successors, (33280), 21940 states have internal predecessors, (33280), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-12-19 22:03:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 46474 transitions. [2023-12-19 22:03:29,539 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 46474 transitions. Word has length 151 [2023-12-19 22:03:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:03:29,539 INFO L495 AbstractCegarLoop]: Abstraction has 27856 states and 46474 transitions. [2023-12-19 22:03:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:03:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 46474 transitions. [2023-12-19 22:03:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 22:03:29,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:03:29,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:03:29,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-19 22:03:29,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:03:29,747 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:03:29,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:03:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1686717797, now seen corresponding path program 1 times [2023-12-19 22:03:29,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:03:29,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247133810] [2023-12-19 22:03:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:03:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:03:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:03:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:03:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:03:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:03:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:03:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 22:03:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 22:03:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:03:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:03:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247133810] [2023-12-19 22:03:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247133810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:03:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424421140] [2023-12-19 22:03:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:30,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:03:30,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:03:30,474 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) [2023-12-19 22:03:30,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 22:03:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:30,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:03:30,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:03:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:03:30,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:03:30,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424421140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:03:30,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:03:30,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-19 22:03:30,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023950016] [2023-12-19 22:03:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:03:30,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:03:30,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:03:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:03:30,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:03:30,801 INFO L87 Difference]: Start difference. First operand 27856 states and 46474 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:03:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:03:36,912 INFO L93 Difference]: Finished difference Result 55863 states and 95172 transitions. [2023-12-19 22:03:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:03:36,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2023-12-19 22:03:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:03:37,098 INFO L225 Difference]: With dead ends: 55863 [2023-12-19 22:03:37,098 INFO L226 Difference]: Without dead ends: 28144 [2023-12-19 22:03:37,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:03:37,225 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 85 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:03:37,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2805 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:03:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28144 states. [2023-12-19 22:03:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28144 to 28144. [2023-12-19 22:03:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28144 states, 21499 states have (on average 1.5613749476719847) internal successors, (33568), 22180 states have internal predecessors, (33568), 4963 states have call successors, (4963), 1521 states have call predecessors, (4963), 1681 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-12-19 22:03:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28144 states to 28144 states and 46762 transitions. [2023-12-19 22:03:43,131 INFO L78 Accepts]: Start accepts. Automaton has 28144 states and 46762 transitions. Word has length 151 [2023-12-19 22:03:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:03:43,132 INFO L495 AbstractCegarLoop]: Abstraction has 28144 states and 46762 transitions. [2023-12-19 22:03:43,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:03:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 28144 states and 46762 transitions. [2023-12-19 22:03:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-19 22:03:43,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:03:43,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:03:43,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 22:03:43,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:03:43,345 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:03:43,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:03:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash 937790866, now seen corresponding path program 1 times [2023-12-19 22:03:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:03:43,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542839903] [2023-12-19 22:03:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:03:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:03:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:03:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:03:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:03:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:03:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:03:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:03:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:03:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:03:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:03:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 22:03:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 22:03:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:03:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:03:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542839903] [2023-12-19 22:03:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542839903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:03:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701935171] [2023-12-19 22:03:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:03:44,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:03:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:03:44,018 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) [2023-12-19 22:03:44,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 22:03:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:03:44,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:03:44,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:03:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:03:44,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:03:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701935171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:03:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:03:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-19 22:03:44,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434108872] [2023-12-19 22:03:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:03:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:03:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:03:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:03:44,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:03:44,448 INFO L87 Difference]: Start difference. First operand 28144 states and 46762 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:03:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:03:57,038 INFO L93 Difference]: Finished difference Result 67748 states and 113476 transitions. [2023-12-19 22:03:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:03:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 153 [2023-12-19 22:03:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:03:57,199 INFO L225 Difference]: With dead ends: 67748 [2023-12-19 22:03:57,199 INFO L226 Difference]: Without dead ends: 42069 [2023-12-19 22:03:57,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:03:57,291 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 3095 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 5365 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 6099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 5365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:03:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3209 Valid, 1674 Invalid, 6099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 5365 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:03:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42069 states. [2023-12-19 22:04:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42069 to 41275. [2023-12-19 22:04:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41275 states, 31427 states have (on average 1.564482769593025) internal successors, (49167), 32438 states have internal predecessors, (49167), 7400 states have call successors, (7400), 2233 states have call predecessors, (7400), 2447 states have return successors, (12724), 7107 states have call predecessors, (12724), 7346 states have call successors, (12724) [2023-12-19 22:04:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41275 states to 41275 states and 69291 transitions. [2023-12-19 22:04:06,355 INFO L78 Accepts]: Start accepts. Automaton has 41275 states and 69291 transitions. Word has length 153 [2023-12-19 22:04:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:04:06,355 INFO L495 AbstractCegarLoop]: Abstraction has 41275 states and 69291 transitions. [2023-12-19 22:04:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:04:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 41275 states and 69291 transitions. [2023-12-19 22:04:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-19 22:04:06,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:04:06,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:04:06,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 22:04:06,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 22:04:06,567 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:04:06,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:04:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash 588575739, now seen corresponding path program 1 times [2023-12-19 22:04:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:04:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342244377] [2023-12-19 22:04:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:04:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:04:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:04:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:04:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:04:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:04:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 22:04:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 22:04:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 22:04:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 22:04:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:04:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342244377] [2023-12-19 22:04:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342244377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:04:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257368880] [2023-12-19 22:04:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:04:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:04:07,249 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) [2023-12-19 22:04:07,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 22:04:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:07,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:04:07,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:04:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:04:07,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:04:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257368880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:04:07,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:04:07,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-19 22:04:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79219039] [2023-12-19 22:04:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:04:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:04:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:04:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:04:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:04:07,695 INFO L87 Difference]: Start difference. First operand 41275 states and 69291 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 22:04:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:04:19,181 INFO L93 Difference]: Finished difference Result 94142 states and 162568 transitions. [2023-12-19 22:04:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:04:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2023-12-19 22:04:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:04:19,436 INFO L225 Difference]: With dead ends: 94142 [2023-12-19 22:04:19,436 INFO L226 Difference]: Without dead ends: 52990 [2023-12-19 22:04:19,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:04:19,639 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1658 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:04:19,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 5594 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:04:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52990 states. [2023-12-19 22:04:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52990 to 52895. [2023-12-19 22:04:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52895 states, 41206 states have (on average 1.5602096782022035) internal successors, (64290), 42314 states have internal predecessors, (64290), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-12-19 22:04:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52895 states to 52895 states and 92647 transitions. [2023-12-19 22:04:30,737 INFO L78 Accepts]: Start accepts. Automaton has 52895 states and 92647 transitions. Word has length 154 [2023-12-19 22:04:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:04:30,737 INFO L495 AbstractCegarLoop]: Abstraction has 52895 states and 92647 transitions. [2023-12-19 22:04:30,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 22:04:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 52895 states and 92647 transitions. [2023-12-19 22:04:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-19 22:04:30,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:04:30,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:04:30,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 22:04:30,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:04:30,949 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:04:30,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:04:30,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1616542892, now seen corresponding path program 1 times [2023-12-19 22:04:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:04:30,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33101246] [2023-12-19 22:04:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:04:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:04:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:04:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:04:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:04:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:04:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:04:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 22:04:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-19 22:04:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:04:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:04:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33101246] [2023-12-19 22:04:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33101246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:04:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658313156] [2023-12-19 22:04:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:31,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:04:31,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:04:31,549 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) [2023-12-19 22:04:31,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 22:04:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:31,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:04:31,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:04:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:04:31,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:04:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658313156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:04:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:04:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-19 22:04:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273167797] [2023-12-19 22:04:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:04:31,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:04:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:04:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:04:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:04:31,987 INFO L87 Difference]: Start difference. First operand 52895 states and 92647 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:04:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:04:46,588 INFO L93 Difference]: Finished difference Result 99622 states and 173113 transitions. [2023-12-19 22:04:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:04:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 156 [2023-12-19 22:04:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:04:46,868 INFO L225 Difference]: With dead ends: 99622 [2023-12-19 22:04:46,868 INFO L226 Difference]: Without dead ends: 53802 [2023-12-19 22:04:47,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:04:47,137 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 3150 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 5921 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 5921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:04:47,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 1630 Invalid, 6667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 5921 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 22:04:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53802 states. [2023-12-19 22:04:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53802 to 52883. [2023-12-19 22:04:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52883 states, 41194 states have (on average 1.5597902607175802) internal successors, (64254), 42302 states have internal predecessors, (64254), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-12-19 22:04:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52883 states to 52883 states and 92611 transitions. [2023-12-19 22:04:58,743 INFO L78 Accepts]: Start accepts. Automaton has 52883 states and 92611 transitions. Word has length 156 [2023-12-19 22:04:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:04:58,743 INFO L495 AbstractCegarLoop]: Abstraction has 52883 states and 92611 transitions. [2023-12-19 22:04:58,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:04:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 52883 states and 92611 transitions. [2023-12-19 22:04:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 22:04:58,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:04:58,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:04:58,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-19 22:04:58,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:04:58,955 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:04:58,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:04:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash -684331586, now seen corresponding path program 1 times [2023-12-19 22:04:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:04:58,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415438604] [2023-12-19 22:04:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:04:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:04:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:04:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:04:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:04:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:04:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:04:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:04:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:04:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:04:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:04:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 22:04:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-19 22:04:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 22:04:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:04:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415438604] [2023-12-19 22:04:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415438604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:04:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613626324] [2023-12-19 22:04:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:04:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:04:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:04:59,518 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) [2023-12-19 22:04:59,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 22:04:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:04:59,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:04:59,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:04:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:04:59,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:04:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613626324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:04:59,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:04:59,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-19 22:04:59,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761456930] [2023-12-19 22:04:59,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:04:59,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 22:04:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:04:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 22:04:59,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:04:59,838 INFO L87 Difference]: Start difference. First operand 52883 states and 92611 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:05:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:05:11,654 INFO L93 Difference]: Finished difference Result 106027 states and 194975 transitions. [2023-12-19 22:05:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:05:11,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2023-12-19 22:05:11,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:05:11,944 INFO L225 Difference]: With dead ends: 106027 [2023-12-19 22:05:11,944 INFO L226 Difference]: Without dead ends: 52749 [2023-12-19 22:05:12,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:05:12,616 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 91 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:05:12,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2801 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:05:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52749 states. [2023-12-19 22:05:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52749 to 52749. [2023-12-19 22:05:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52749 states, 41060 states have (on average 1.5518265952264978) internal successors, (63718), 42168 states have internal predecessors, (63718), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2023-12-19 22:05:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52749 states to 52749 states and 92075 transitions. [2023-12-19 22:05:23,866 INFO L78 Accepts]: Start accepts. Automaton has 52749 states and 92075 transitions. Word has length 158 [2023-12-19 22:05:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:05:23,867 INFO L495 AbstractCegarLoop]: Abstraction has 52749 states and 92075 transitions. [2023-12-19 22:05:23,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:05:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 52749 states and 92075 transitions. [2023-12-19 22:05:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-19 22:05:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:05:23,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:05:23,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-19 22:05:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 22:05:24,080 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:05:24,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:05:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1000022328, now seen corresponding path program 1 times [2023-12-19 22:05:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:05:24,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103904249] [2023-12-19 22:05:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:05:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:05:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:05:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:05:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:05:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:05:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:05:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:05:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:05:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:05:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:05:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:05:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:05:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 22:05:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-19 22:05:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:05:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:05:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103904249] [2023-12-19 22:05:24,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103904249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:05:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477783792] [2023-12-19 22:05:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:05:24,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:05:24,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:05:24,710 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:05:24,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 22:05:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:05:25,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:05:25,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:05:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:05:25,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:05:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477783792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:05:25,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:05:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-19 22:05:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357987533] [2023-12-19 22:05:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:05:25,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:05:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:05:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:05:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:05:25,185 INFO L87 Difference]: Start difference. First operand 52749 states and 92075 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:05:51,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:05:51,183 INFO L93 Difference]: Finished difference Result 146883 states and 278853 transitions. [2023-12-19 22:05:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:05:51,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 159 [2023-12-19 22:05:51,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:05:51,762 INFO L225 Difference]: With dead ends: 146883 [2023-12-19 22:05:51,762 INFO L226 Difference]: Without dead ends: 94223 [2023-12-19 22:05:52,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-19 22:05:52,376 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 5392 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 1480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5502 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1480 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:05:52,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5502 Valid, 1072 Invalid, 4970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1480 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:05:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94223 states. [2023-12-19 22:06:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94223 to 83904. [2023-12-19 22:06:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83904 states, 65231 states have (on average 1.5436832181018227) internal successors, (100696), 67107 states have internal predecessors, (100696), 13256 states have call successors, (13256), 4771 states have call predecessors, (13256), 5416 states have return successors, (28253), 12889 states have call predecessors, (28253), 13154 states have call successors, (28253) [2023-12-19 22:06:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83904 states to 83904 states and 142205 transitions. [2023-12-19 22:06:11,621 INFO L78 Accepts]: Start accepts. Automaton has 83904 states and 142205 transitions. Word has length 159 [2023-12-19 22:06:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:06:11,622 INFO L495 AbstractCegarLoop]: Abstraction has 83904 states and 142205 transitions. [2023-12-19 22:06:11,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:06:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 83904 states and 142205 transitions. [2023-12-19 22:06:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-19 22:06:11,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:06:11,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:06:11,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 22:06:11,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 22:06:11,832 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:06:11,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:06:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1893263647, now seen corresponding path program 1 times [2023-12-19 22:06:11,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:06:11,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235217031] [2023-12-19 22:06:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:06:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:06:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:06:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:06:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:06:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:06:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:06:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:06:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:06:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 22:06:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 22:06:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:06:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:06:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235217031] [2023-12-19 22:06:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235217031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:06:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024483487] [2023-12-19 22:06:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:12,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:06:12,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:06:12,398 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:06:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 22:06:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:12,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 22:06:12,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:06:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:06:12,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:06:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024483487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:06:12,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:06:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-19 22:06:12,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125531835] [2023-12-19 22:06:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:06:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:06:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:06:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:06:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:06:12,857 INFO L87 Difference]: Start difference. First operand 83904 states and 142205 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:06:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:06:35,577 INFO L93 Difference]: Finished difference Result 162119 states and 274492 transitions. [2023-12-19 22:06:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 22:06:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 160 [2023-12-19 22:06:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:06:36,219 INFO L225 Difference]: With dead ends: 162119 [2023-12-19 22:06:36,219 INFO L226 Difference]: Without dead ends: 85409 [2023-12-19 22:06:36,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:06:36,835 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 2975 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 6094 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 6094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:06:36,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3089 Valid, 1788 Invalid, 6787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 6094 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:06:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85409 states. [2023-12-19 22:06:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85409 to 83868. [2023-12-19 22:06:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83868 states, 65195 states have (on average 1.5428790551422655) internal successors, (100588), 67071 states have internal predecessors, (100588), 13256 states have call successors, (13256), 4771 states have call predecessors, (13256), 5416 states have return successors, (28253), 12889 states have call predecessors, (28253), 13154 states have call successors, (28253) [2023-12-19 22:06:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83868 states to 83868 states and 142097 transitions. [2023-12-19 22:06:55,601 INFO L78 Accepts]: Start accepts. Automaton has 83868 states and 142097 transitions. Word has length 160 [2023-12-19 22:06:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:06:55,602 INFO L495 AbstractCegarLoop]: Abstraction has 83868 states and 142097 transitions. [2023-12-19 22:06:55,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-19 22:06:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 83868 states and 142097 transitions. [2023-12-19 22:06:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 22:06:55,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:06:55,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-12-19 22:06:55,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-19 22:06:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 22:06:55,813 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:06:55,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:06:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1538672905, now seen corresponding path program 1 times [2023-12-19 22:06:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:06:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728037422] [2023-12-19 22:06:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:06:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:06:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:06:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:06:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:06:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:06:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:06:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:06:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:06:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:06:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:06:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 22:06:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 22:06:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-19 22:06:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:06:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:06:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728037422] [2023-12-19 22:06:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728037422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:06:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882791851] [2023-12-19 22:06:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:06:56,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:06:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:06:56,621 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:06:56,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 22:06:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:06:56,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 22:06:56,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:06:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 22:06:56,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:06:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882791851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:06:56,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:06:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-19 22:06:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290065229] [2023-12-19 22:06:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:06:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:06:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:06:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:06:56,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:06:56,963 INFO L87 Difference]: Start difference. First operand 83868 states and 142097 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 22:07:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:07:17,097 INFO L93 Difference]: Finished difference Result 169556 states and 292927 transitions. [2023-12-19 22:07:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:07:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2023-12-19 22:07:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.