/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_spec2_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:28:56,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:28:56,540 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 22:28:56,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:28:56,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:28:56,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:28:56,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:28:56,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:28:56,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:28:56,566 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:28:56,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:28:56,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:28:56,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:28:56,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:28:56,567 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:28:56,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:28:56,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:28:56,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:28:56,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:28:56,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:28:56,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:28:56,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:28:56,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:28:56,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:28:56,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:28:56,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:28:56,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:28:56,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:28:56,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:28:56,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:28:56,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:28:56,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:28:56,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:28:56,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:28:56,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:28:56,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:28:56,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:28:56,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:28:56,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:28:56,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:28:56,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:28:56,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:28:56,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:28:56,762 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:28:56,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2023-12-19 22:28:57,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:28:57,976 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:28:57,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2023-12-19 22:28:57,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85bd4a7ea/c1b8c3cd811e4f01a5602c501aeb3e2b/FLAGc1b2184fa [2023-12-19 22:28:58,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85bd4a7ea/c1b8c3cd811e4f01a5602c501aeb3e2b [2023-12-19 22:28:58,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:28:58,006 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:28:58,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:28:58,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:28:58,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:28:58,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791aa2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58, skipping insertion in model container [2023-12-19 22:28:58,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:28:58,168 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_spec2_product22.cil.c[1545,1558] [2023-12-19 22:28:58,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:28:58,398 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:28:58,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [421] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1088] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1454] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1466] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1586] [2023-12-19 22:28:58,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1621] [2023-12-19 22:28:58,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3188] [2023-12-19 22:28:58,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3279] [2023-12-19 22:28:58,408 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_spec2_product22.cil.c[1545,1558] [2023-12-19 22:28:58,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:28:58,527 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:28:58,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58 WrapperNode [2023-12-19 22:28:58,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:28:58,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:28:58,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:28:58,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:28:58,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,628 INFO L138 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 875 [2023-12-19 22:28:58,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:28:58,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:28:58,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:28:58,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:28:58,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,660 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 22:28:58,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:28:58,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:28:58,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:28:58,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:28:58,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (1/1) ... [2023-12-19 22:28:58,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:28:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:28:58,736 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 22:28:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:28:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:28:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:28:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-19 22:28:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-19 22:28:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:28:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:28:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:28:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:28:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:28:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:28:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:28:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:28:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:28:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:28:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-19 22:28:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-19 22:28:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:28:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:28:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:28:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:28:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:28:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:28:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:28:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:28:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:28:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:28:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:28:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:28:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:28:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:28:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:28:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:28:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:28:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:28:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:28:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:28:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-12-19 22:28:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-12-19 22:28:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:28:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:28:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:28:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:28:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:28:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:28:58,760 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 22:28:58,941 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:28:58,943 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:28:59,772 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:28:59,837 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:28:59,837 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:28:59,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:28:59 BoogieIcfgContainer [2023-12-19 22:28:59,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:28:59,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:28:59,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:28:59,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:28:59,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:28:58" (1/3) ... [2023-12-19 22:28:59,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a000544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:28:59, skipping insertion in model container [2023-12-19 22:28:59,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:28:58" (2/3) ... [2023-12-19 22:28:59,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a000544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:28:59, skipping insertion in model container [2023-12-19 22:28:59,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:28:59" (3/3) ... [2023-12-19 22:28:59,844 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2023-12-19 22:28:59,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:28:59,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:28:59,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:28:59,901 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;@65b4b6de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:28:59,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:28:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 426 states have (on average 1.7253521126760563) internal successors, (735), 449 states have internal predecessors, (735), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-19 22:28:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 22:28:59,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:28:59,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:28:59,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:28:59,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:28:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash -749855397, now seen corresponding path program 1 times [2023-12-19 22:28:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:28:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379502229] [2023-12-19 22:28:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:28:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:29:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:29:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379502229] [2023-12-19 22:29:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379502229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:00,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025266926] [2023-12-19 22:29:00,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:00,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:00,871 INFO L87 Difference]: Start difference. First operand has 551 states, 426 states have (on average 1.7253521126760563) internal successors, (735), 449 states have internal predecessors, (735), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:05,320 INFO L93 Difference]: Finished difference Result 1247 states and 2133 transitions. [2023-12-19 22:29:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:29:05,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-12-19 22:29:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:05,338 INFO L225 Difference]: With dead ends: 1247 [2023-12-19 22:29:05,339 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 22:29:05,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:05,348 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 692 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:05,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1080 Invalid, 2896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 22:29:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 22:29:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 547. [2023-12-19 22:29:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:29:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 918 transitions. [2023-12-19 22:29:05,484 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 918 transitions. Word has length 50 [2023-12-19 22:29:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:05,484 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 918 transitions. [2023-12-19 22:29:05,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 918 transitions. [2023-12-19 22:29:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-19 22:29:05,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:05,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:29:05,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:05,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -597670318, now seen corresponding path program 1 times [2023-12-19 22:29:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049709205] [2023-12-19 22:29:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:29:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049709205] [2023-12-19 22:29:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049709205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023552724] [2023-12-19 22:29:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:06,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:06,034 INFO L87 Difference]: Start difference. First operand 547 states and 918 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:10,027 INFO L93 Difference]: Finished difference Result 1240 states and 2106 transitions. [2023-12-19 22:29:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:29:10,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2023-12-19 22:29:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:10,033 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 22:29:10,033 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 22:29:10,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:10,037 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 689 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:10,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1071 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 22:29:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 22:29:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 547. [2023-12-19 22:29:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7122641509433962) internal successors, (726), 445 states have internal predecessors, (726), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:29:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 917 transitions. [2023-12-19 22:29:10,124 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 917 transitions. Word has length 52 [2023-12-19 22:29:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:10,124 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 917 transitions. [2023-12-19 22:29:10,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 917 transitions. [2023-12-19 22:29:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 22:29:10,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:10,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:29:10,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:10,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash 989901967, now seen corresponding path program 1 times [2023-12-19 22:29:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:10,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409653754] [2023-12-19 22:29:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:29:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:29:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:10,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:10,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409653754] [2023-12-19 22:29:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409653754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:10,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754565659] [2023-12-19 22:29:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:10,587 INFO L87 Difference]: Start difference. First operand 547 states and 917 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:14,313 INFO L93 Difference]: Finished difference Result 1240 states and 2105 transitions. [2023-12-19 22:29:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:29:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2023-12-19 22:29:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:14,317 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 22:29:14,317 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 22:29:14,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:14,319 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 686 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:14,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1077 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:29:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 22:29:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 547. [2023-12-19 22:29:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7099056603773586) internal successors, (725), 445 states have internal predecessors, (725), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:29:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 916 transitions. [2023-12-19 22:29:14,373 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 916 transitions. Word has length 53 [2023-12-19 22:29:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:14,373 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 916 transitions. [2023-12-19 22:29:14,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 916 transitions. [2023-12-19 22:29:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 22:29:14,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:14,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:29:14,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:14,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash 452007926, now seen corresponding path program 1 times [2023-12-19 22:29:14,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20465898] [2023-12-19 22:29:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 22:29:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:29:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20465898] [2023-12-19 22:29:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20465898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894563730] [2023-12-19 22:29:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:14,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:14,878 INFO L87 Difference]: Start difference. First operand 547 states and 916 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:18,743 INFO L93 Difference]: Finished difference Result 1240 states and 2104 transitions. [2023-12-19 22:29:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:29:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2023-12-19 22:29:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:18,747 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 22:29:18,747 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 22:29:18,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:18,750 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 684 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:18,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1056 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:29:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 22:29:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 547. [2023-12-19 22:29:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7075471698113207) internal successors, (724), 445 states have internal predecessors, (724), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:29:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 915 transitions. [2023-12-19 22:29:18,824 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 915 transitions. Word has length 54 [2023-12-19 22:29:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:18,824 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 915 transitions. [2023-12-19 22:29:18,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 915 transitions. [2023-12-19 22:29:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 22:29:18,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:18,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:29:18,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:18,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:18,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1550832781, now seen corresponding path program 1 times [2023-12-19 22:29:18,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:18,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857967220] [2023-12-19 22:29:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:29:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 22:29:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857967220] [2023-12-19 22:29:19,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857967220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:19,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:19,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:19,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822598527] [2023-12-19 22:29:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:19,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:19,306 INFO L87 Difference]: Start difference. First operand 547 states and 915 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:23,107 INFO L93 Difference]: Finished difference Result 1240 states and 2103 transitions. [2023-12-19 22:29:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:29:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-12-19 22:29:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:23,111 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 22:29:23,111 INFO L226 Difference]: Without dead ends: 705 [2023-12-19 22:29:23,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:23,114 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 681 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:23,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1071 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 22:29:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-19 22:29:23,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 547. [2023-12-19 22:29:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.705188679245283) internal successors, (723), 445 states have internal predecessors, (723), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:29:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 914 transitions. [2023-12-19 22:29:23,166 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 914 transitions. Word has length 55 [2023-12-19 22:29:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:23,166 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 914 transitions. [2023-12-19 22:29:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 914 transitions. [2023-12-19 22:29:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 22:29:23,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:23,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:29:23,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:23,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1722379878, now seen corresponding path program 1 times [2023-12-19 22:29:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416476851] [2023-12-19 22:29:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:29:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416476851] [2023-12-19 22:29:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416476851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:23,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:29:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414353367] [2023-12-19 22:29:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:29:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:23,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:29:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:29:23,717 INFO L87 Difference]: Start difference. First operand 547 states and 914 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:28,682 INFO L93 Difference]: Finished difference Result 1216 states and 2052 transitions. [2023-12-19 22:29:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:29:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-12-19 22:29:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:28,697 INFO L225 Difference]: With dead ends: 1216 [2023-12-19 22:29:28,697 INFO L226 Difference]: Without dead ends: 729 [2023-12-19 22:29:28,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:29:28,701 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1242 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 5111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:28,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1905 Invalid, 5111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 4834 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:29:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-12-19 22:29:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 559. [2023-12-19 22:29:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.702078521939954) internal successors, (737), 456 states have internal predecessors, (737), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 932 transitions. [2023-12-19 22:29:28,768 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 932 transitions. Word has length 56 [2023-12-19 22:29:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:28,768 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 932 transitions. [2023-12-19 22:29:28,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 932 transitions. [2023-12-19 22:29:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 22:29:28,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:28,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:28,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:29:28,770 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:28,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash 871846939, now seen corresponding path program 1 times [2023-12-19 22:29:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243951781] [2023-12-19 22:29:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 22:29:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243951781] [2023-12-19 22:29:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243951781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:29,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137734776] [2023-12-19 22:29:29,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:29,168 INFO L87 Difference]: Start difference. First operand 559 states and 932 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:32,572 INFO L93 Difference]: Finished difference Result 1228 states and 2073 transitions. [2023-12-19 22:29:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:29:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2023-12-19 22:29:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:32,576 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 22:29:32,576 INFO L226 Difference]: Without dead ends: 725 [2023-12-19 22:29:32,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:32,578 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 774 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:32,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1059 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:29:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-19 22:29:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 559. [2023-12-19 22:29:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6905311778290992) internal successors, (732), 456 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 927 transitions. [2023-12-19 22:29:32,661 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 927 transitions. Word has length 56 [2023-12-19 22:29:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:32,661 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 927 transitions. [2023-12-19 22:29:32,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 927 transitions. [2023-12-19 22:29:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 22:29:32,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:32,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:32,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:29:32,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:32,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash -121836902, now seen corresponding path program 1 times [2023-12-19 22:29:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:32,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458710195] [2023-12-19 22:29:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:32,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:29:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:33,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458710195] [2023-12-19 22:29:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458710195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:33,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:33,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662234049] [2023-12-19 22:29:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:33,073 INFO L87 Difference]: Start difference. First operand 559 states and 927 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:36,497 INFO L93 Difference]: Finished difference Result 1228 states and 2068 transitions. [2023-12-19 22:29:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:29:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-12-19 22:29:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:36,502 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 22:29:36,502 INFO L226 Difference]: Without dead ends: 725 [2023-12-19 22:29:36,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:36,504 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 769 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:36,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1059 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:29:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-19 22:29:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 559. [2023-12-19 22:29:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6789838337182448) internal successors, (727), 456 states have internal predecessors, (727), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 922 transitions. [2023-12-19 22:29:36,587 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 922 transitions. Word has length 57 [2023-12-19 22:29:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:36,588 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 922 transitions. [2023-12-19 22:29:36,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 922 transitions. [2023-12-19 22:29:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 22:29:36,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:36,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:29:36,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:36,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1287179498, now seen corresponding path program 1 times [2023-12-19 22:29:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184472889] [2023-12-19 22:29:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:36,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:29:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:37,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:37,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184472889] [2023-12-19 22:29:37,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184472889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:37,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:37,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295241005] [2023-12-19 22:29:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:37,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:37,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:37,016 INFO L87 Difference]: Start difference. First operand 559 states and 922 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:40,181 INFO L93 Difference]: Finished difference Result 1228 states and 2063 transitions. [2023-12-19 22:29:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:29:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 22:29:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:40,184 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 22:29:40,184 INFO L226 Difference]: Without dead ends: 725 [2023-12-19 22:29:40,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:40,186 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1211 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1051 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 22:29:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-19 22:29:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 559. [2023-12-19 22:29:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6674364896073903) internal successors, (722), 456 states have internal predecessors, (722), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 917 transitions. [2023-12-19 22:29:40,241 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 917 transitions. Word has length 58 [2023-12-19 22:29:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:40,242 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 917 transitions. [2023-12-19 22:29:40,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 917 transitions. [2023-12-19 22:29:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:29:40,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:40,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:40,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:29:40,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash -942384107, now seen corresponding path program 1 times [2023-12-19 22:29:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142461652] [2023-12-19 22:29:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:29:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142461652] [2023-12-19 22:29:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142461652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:29:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859183850] [2023-12-19 22:29:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:40,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:29:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:29:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:29:40,744 INFO L87 Difference]: Start difference. First operand 559 states and 917 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:45,762 INFO L93 Difference]: Finished difference Result 1219 states and 2039 transitions. [2023-12-19 22:29:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:29:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-19 22:29:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:45,765 INFO L225 Difference]: With dead ends: 1219 [2023-12-19 22:29:45,765 INFO L226 Difference]: Without dead ends: 730 [2023-12-19 22:29:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:29:45,767 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1206 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 4776 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 5047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1929 Invalid, 5047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4776 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:29:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-19 22:29:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 559. [2023-12-19 22:29:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 456 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 916 transitions. [2023-12-19 22:29:45,821 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 916 transitions. Word has length 59 [2023-12-19 22:29:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:45,821 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 916 transitions. [2023-12-19 22:29:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 916 transitions. [2023-12-19 22:29:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:29:45,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:45,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:29:45,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:45,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 815991093, now seen corresponding path program 1 times [2023-12-19 22:29:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779690183] [2023-12-19 22:29:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:29:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:46,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:46,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779690183] [2023-12-19 22:29:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779690183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:46,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:46,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723592827] [2023-12-19 22:29:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:46,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:46,228 INFO L87 Difference]: Start difference. First operand 559 states and 916 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:49,609 INFO L93 Difference]: Finished difference Result 1228 states and 2055 transitions. [2023-12-19 22:29:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:29:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-19 22:29:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:49,613 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 22:29:49,613 INFO L226 Difference]: Without dead ends: 725 [2023-12-19 22:29:49,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:49,615 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 767 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:49,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1055 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:29:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-19 22:29:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 559. [2023-12-19 22:29:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.653579676674365) internal successors, (716), 456 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 911 transitions. [2023-12-19 22:29:49,686 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 911 transitions. Word has length 59 [2023-12-19 22:29:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:49,686 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 911 transitions. [2023-12-19 22:29:49,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 911 transitions. [2023-12-19 22:29:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 22:29:49,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:49,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:49,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:29:49,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:49,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -131019533, now seen corresponding path program 1 times [2023-12-19 22:29:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315153344] [2023-12-19 22:29:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:49,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315153344] [2023-12-19 22:29:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315153344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:29:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863135735] [2023-12-19 22:29:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:50,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:29:50,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:29:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:29:50,171 INFO L87 Difference]: Start difference. First operand 559 states and 911 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:55,215 INFO L93 Difference]: Finished difference Result 1237 states and 2060 transitions. [2023-12-19 22:29:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:29:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 60 [2023-12-19 22:29:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:55,219 INFO L225 Difference]: With dead ends: 1237 [2023-12-19 22:29:55,219 INFO L226 Difference]: Without dead ends: 746 [2023-12-19 22:29:55,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:29:55,221 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1214 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 4696 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 4971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 4696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:55,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1918 Invalid, 4971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 4696 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:29:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-19 22:29:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 562. [2023-12-19 22:29:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.646788990825688) internal successors, (718), 459 states have internal predecessors, (718), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 913 transitions. [2023-12-19 22:29:55,290 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 913 transitions. Word has length 60 [2023-12-19 22:29:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:55,290 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 913 transitions. [2023-12-19 22:29:55,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:29:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 913 transitions. [2023-12-19 22:29:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 22:29:55,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:55,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:29:55,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:55,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1163855377, now seen corresponding path program 1 times [2023-12-19 22:29:55,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:55,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603709896] [2023-12-19 22:29:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:55,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:29:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603709896] [2023-12-19 22:29:55,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603709896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:55,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:29:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125321828] [2023-12-19 22:29:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:29:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:29:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:29:55,757 INFO L87 Difference]: Start difference. First operand 562 states and 913 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:29:59,077 INFO L93 Difference]: Finished difference Result 1237 states and 2056 transitions. [2023-12-19 22:29:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:29:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-19 22:29:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:29:59,080 INFO L225 Difference]: With dead ends: 1237 [2023-12-19 22:29:59,080 INFO L226 Difference]: Without dead ends: 731 [2023-12-19 22:29:59,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:29:59,082 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 759 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:29:59,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1044 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:29:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-19 22:29:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 562. [2023-12-19 22:29:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.635321100917431) internal successors, (713), 459 states have internal predecessors, (713), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:29:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 908 transitions. [2023-12-19 22:29:59,136 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 908 transitions. Word has length 60 [2023-12-19 22:29:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:29:59,136 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 908 transitions. [2023-12-19 22:29:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:29:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 908 transitions. [2023-12-19 22:29:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:29:59,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:29:59,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:29:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:29:59,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:29:59,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:29:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 413045168, now seen corresponding path program 1 times [2023-12-19 22:29:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:29:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007254770] [2023-12-19 22:29:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:29:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:29:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:29:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:29:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:29:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:29:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:29:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:29:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:29:59,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:29:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007254770] [2023-12-19 22:29:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007254770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:29:59,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:29:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:29:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700228097] [2023-12-19 22:29:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:29:59,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:29:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:29:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:29:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:29:59,571 INFO L87 Difference]: Start difference. First operand 562 states and 908 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:30:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:04,547 INFO L93 Difference]: Finished difference Result 1243 states and 2057 transitions. [2023-12-19 22:30:04,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:30:04,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2023-12-19 22:30:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:04,551 INFO L225 Difference]: With dead ends: 1243 [2023-12-19 22:30:04,551 INFO L226 Difference]: Without dead ends: 752 [2023-12-19 22:30:04,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:30:04,553 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1202 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 4659 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 4934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 4659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:04,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 1920 Invalid, 4934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 4659 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:30:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-19 22:30:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 566. [2023-12-19 22:30:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 440 states have (on average 1.6272727272727272) internal successors, (716), 463 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2023-12-19 22:30:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 911 transitions. [2023-12-19 22:30:04,622 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 911 transitions. Word has length 61 [2023-12-19 22:30:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:04,622 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 911 transitions. [2023-12-19 22:30:04,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:30:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 911 transitions. [2023-12-19 22:30:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:30:04,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:04,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:04,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:30:04,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:04,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1363168304, now seen corresponding path program 1 times [2023-12-19 22:30:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108429194] [2023-12-19 22:30:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:04,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:30:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:30:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108429194] [2023-12-19 22:30:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108429194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:30:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349942595] [2023-12-19 22:30:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:05,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:30:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:30:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:30:05,035 INFO L87 Difference]: Start difference. First operand 566 states and 911 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:30:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:08,902 INFO L93 Difference]: Finished difference Result 1285 states and 2101 transitions. [2023-12-19 22:30:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:30:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2023-12-19 22:30:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:08,908 INFO L225 Difference]: With dead ends: 1285 [2023-12-19 22:30:08,908 INFO L226 Difference]: Without dead ends: 713 [2023-12-19 22:30:08,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:30:08,910 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 675 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:08,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1047 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:30:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-19 22:30:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 548. [2023-12-19 22:30:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6352941176470588) internal successors, (695), 446 states have internal predecessors, (695), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:30:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 886 transitions. [2023-12-19 22:30:08,966 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 886 transitions. Word has length 61 [2023-12-19 22:30:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:08,966 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 886 transitions. [2023-12-19 22:30:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 22:30:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 886 transitions. [2023-12-19 22:30:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 22:30:08,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:08,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:08,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:30:08,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:08,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1260748398, now seen corresponding path program 1 times [2023-12-19 22:30:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:08,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714100000] [2023-12-19 22:30:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:30:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:30:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:09,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:09,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714100000] [2023-12-19 22:30:09,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714100000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:09,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:09,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:30:09,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702781418] [2023-12-19 22:30:09,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:30:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:09,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:30:09,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:30:09,405 INFO L87 Difference]: Start difference. First operand 548 states and 886 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:30:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:14,465 INFO L93 Difference]: Finished difference Result 1219 states and 2015 transitions. [2023-12-19 22:30:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:30:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2023-12-19 22:30:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:14,468 INFO L225 Difference]: With dead ends: 1219 [2023-12-19 22:30:14,468 INFO L226 Difference]: Without dead ends: 730 [2023-12-19 22:30:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:30:14,470 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 721 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 4724 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 4854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 4724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1865 Invalid, 4854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 4724 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:30:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-19 22:30:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 553. [2023-12-19 22:30:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 430 states have (on average 1.627906976744186) internal successors, (700), 451 states have internal predecessors, (700), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-19 22:30:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 891 transitions. [2023-12-19 22:30:14,526 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 891 transitions. Word has length 62 [2023-12-19 22:30:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:14,526 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 891 transitions. [2023-12-19 22:30:14,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 22:30:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 891 transitions. [2023-12-19 22:30:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:30:14,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:14,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:30:14,530 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:14,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 295410491, now seen corresponding path program 1 times [2023-12-19 22:30:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574214401] [2023-12-19 22:30:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:30:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574214401] [2023-12-19 22:30:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574214401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:30:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629362027] [2023-12-19 22:30:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:15,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:30:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:30:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:30:15,089 INFO L87 Difference]: Start difference. First operand 553 states and 891 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 22:30:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:21,604 INFO L93 Difference]: Finished difference Result 2023 states and 3425 transitions. [2023-12-19 22:30:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:30:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2023-12-19 22:30:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:21,612 INFO L225 Difference]: With dead ends: 2023 [2023-12-19 22:30:21,612 INFO L226 Difference]: Without dead ends: 1541 [2023-12-19 22:30:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:30:21,614 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 3535 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 3798 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 3798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 1590 Invalid, 4710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 3798 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 22:30:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-19 22:30:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1060. [2023-12-19 22:30:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 825 states have (on average 1.6606060606060606) internal successors, (1370), 855 states have internal predecessors, (1370), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2023-12-19 22:30:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1752 transitions. [2023-12-19 22:30:21,751 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1752 transitions. Word has length 63 [2023-12-19 22:30:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:21,752 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1752 transitions. [2023-12-19 22:30:21,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 22:30:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1752 transitions. [2023-12-19 22:30:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 22:30:21,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:21,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:21,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:30:21,755 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:21,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1869620928, now seen corresponding path program 1 times [2023-12-19 22:30:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139092923] [2023-12-19 22:30:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:30:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:30:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:30:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-19 22:30:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139092923] [2023-12-19 22:30:22,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139092923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:22,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:22,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-19 22:30:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582507677] [2023-12-19 22:30:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:22,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 22:30:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 22:30:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-19 22:30:22,950 INFO L87 Difference]: Start difference. First operand 1060 states and 1752 transitions. Second operand has 18 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:30:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:36,294 INFO L93 Difference]: Finished difference Result 3241 states and 5528 transitions. [2023-12-19 22:30:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 22:30:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 101 [2023-12-19 22:30:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:36,305 INFO L225 Difference]: With dead ends: 3241 [2023-12-19 22:30:36,305 INFO L226 Difference]: Without dead ends: 2252 [2023-12-19 22:30:36,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 22:30:36,310 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 3238 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 12360 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 13516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 12360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:36,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 4284 Invalid, 13516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1156 Valid, 12360 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-19 22:30:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2023-12-19 22:30:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1519. [2023-12-19 22:30:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1168 states have (on average 1.6284246575342465) internal successors, (1902), 1200 states have internal predecessors, (1902), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 270 states have call predecessors, (315), 273 states have call successors, (315) [2023-12-19 22:30:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2495 transitions. [2023-12-19 22:30:36,672 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2495 transitions. Word has length 101 [2023-12-19 22:30:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:36,672 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2495 transitions. [2023-12-19 22:30:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.066666666666666) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:30:36,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2495 transitions. [2023-12-19 22:30:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 22:30:36,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:36,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:30:36,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:36,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1039670333, now seen corresponding path program 1 times [2023-12-19 22:30:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340054087] [2023-12-19 22:30:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:30:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:30:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:30:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:37,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:37,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340054087] [2023-12-19 22:30:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340054087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:37,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 22:30:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347245037] [2023-12-19 22:30:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:37,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 22:30:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 22:30:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:30:37,744 INFO L87 Difference]: Start difference. First operand 1519 states and 2495 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:45,356 INFO L93 Difference]: Finished difference Result 3563 states and 5997 transitions. [2023-12-19 22:30:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:30:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2023-12-19 22:30:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:45,363 INFO L225 Difference]: With dead ends: 3563 [2023-12-19 22:30:45,363 INFO L226 Difference]: Without dead ends: 2117 [2023-12-19 22:30:45,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-12-19 22:30:45,367 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2262 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 5686 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 6417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 5686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:45,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 2605 Invalid, 6417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [731 Valid, 5686 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 22:30:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-12-19 22:30:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1521. [2023-12-19 22:30:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1170 states have (on average 1.6273504273504273) internal successors, (1904), 1200 states have internal predecessors, (1904), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 272 states have call predecessors, (315), 273 states have call successors, (315) [2023-12-19 22:30:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2497 transitions. [2023-12-19 22:30:45,602 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2497 transitions. Word has length 103 [2023-12-19 22:30:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:45,602 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2497 transitions. [2023-12-19 22:30:45,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:30:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2497 transitions. [2023-12-19 22:30:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 22:30:45,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:45,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:45,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:30:45,605 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:45,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 243304739, now seen corresponding path program 1 times [2023-12-19 22:30:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157614049] [2023-12-19 22:30:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:30:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:30:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:30:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:30:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157614049] [2023-12-19 22:30:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157614049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-19 22:30:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78128854] [2023-12-19 22:30:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:46,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 22:30:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 22:30:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:30:46,686 INFO L87 Difference]: Start difference. First operand 1521 states and 2497 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:30:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:30:57,129 INFO L93 Difference]: Finished difference Result 4166 states and 7022 transitions. [2023-12-19 22:30:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 22:30:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 103 [2023-12-19 22:30:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:30:57,138 INFO L225 Difference]: With dead ends: 4166 [2023-12-19 22:30:57,138 INFO L226 Difference]: Without dead ends: 2718 [2023-12-19 22:30:57,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 22:30:57,143 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 3838 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 1266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3838 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 8593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1266 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:30:57,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3838 Valid, 3000 Invalid, 8593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1266 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 22:30:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2023-12-19 22:30:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2017. [2023-12-19 22:30:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1559 states have (on average 1.625400898011546) internal successors, (2534), 1589 states have internal predecessors, (2534), 358 states have call successors, (358), 83 states have call predecessors, (358), 99 states have return successors, (410), 355 states have call predecessors, (410), 353 states have call successors, (410) [2023-12-19 22:30:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3302 transitions. [2023-12-19 22:30:57,486 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3302 transitions. Word has length 103 [2023-12-19 22:30:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:30:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 3302 transitions. [2023-12-19 22:30:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:30:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3302 transitions. [2023-12-19 22:30:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 22:30:57,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:30:57,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:30:57,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:30:57,489 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:30:57,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:30:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1960165709, now seen corresponding path program 1 times [2023-12-19 22:30:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:30:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568806005] [2023-12-19 22:30:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:30:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:30:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:30:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:30:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:30:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:30:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:30:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:30:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:30:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:30:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:30:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:30:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:30:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:30:58,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568806005] [2023-12-19 22:30:58,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568806005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:30:58,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:30:58,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:30:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345487531] [2023-12-19 22:30:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:30:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:30:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:30:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:30:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:30:58,301 INFO L87 Difference]: Start difference. First operand 2017 states and 3302 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:31:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:12,556 INFO L93 Difference]: Finished difference Result 8722 states and 15434 transitions. [2023-12-19 22:31:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 22:31:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2023-12-19 22:31:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:12,584 INFO L225 Difference]: With dead ends: 8722 [2023-12-19 22:31:12,584 INFO L226 Difference]: Without dead ends: 6768 [2023-12-19 22:31:12,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 22:31:12,596 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 8151 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 4674 mSolverCounterSat, 2957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8151 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 7631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2957 IncrementalHoareTripleChecker+Valid, 4674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:12,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8151 Valid, 2409 Invalid, 7631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2957 Valid, 4674 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 22:31:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2023-12-19 22:31:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 5222. [2023-12-19 22:31:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 4017 states have (on average 1.593228777694797) internal successors, (6400), 4101 states have internal predecessors, (6400), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 922 states have call predecessors, (1326), 919 states have call successors, (1326) [2023-12-19 22:31:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 8650 transitions. [2023-12-19 22:31:13,651 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 8650 transitions. Word has length 106 [2023-12-19 22:31:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:13,651 INFO L495 AbstractCegarLoop]: Abstraction has 5222 states and 8650 transitions. [2023-12-19 22:31:13,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-19 22:31:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 8650 transitions. [2023-12-19 22:31:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 22:31:13,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:13,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:13,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:31:13,654 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:13,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash 739304623, now seen corresponding path program 1 times [2023-12-19 22:31:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:13,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709032579] [2023-12-19 22:31:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:31:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:31:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:31:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:31:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:31:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:31:14,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709032579] [2023-12-19 22:31:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709032579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:14,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:31:14,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 22:31:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295245378] [2023-12-19 22:31:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:14,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 22:31:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:14,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 22:31:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:31:14,580 INFO L87 Difference]: Start difference. First operand 5222 states and 8650 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:31:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:22,650 INFO L93 Difference]: Finished difference Result 11959 states and 20402 transitions. [2023-12-19 22:31:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 22:31:22,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2023-12-19 22:31:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:22,674 INFO L225 Difference]: With dead ends: 11959 [2023-12-19 22:31:22,674 INFO L226 Difference]: Without dead ends: 6810 [2023-12-19 22:31:22,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-12-19 22:31:22,687 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 3573 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 5331 mSolverCounterSat, 1207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 6538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1207 IncrementalHoareTripleChecker+Valid, 5331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:22,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3573 Valid, 2484 Invalid, 6538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1207 Valid, 5331 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:31:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2023-12-19 22:31:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 5234. [2023-12-19 22:31:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 4029 states have (on average 1.5914619012161826) internal successors, (6412), 4101 states have internal predecessors, (6412), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 934 states have call predecessors, (1326), 919 states have call successors, (1326) [2023-12-19 22:31:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8662 transitions. [2023-12-19 22:31:23,677 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8662 transitions. Word has length 107 [2023-12-19 22:31:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 8662 transitions. [2023-12-19 22:31:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-19 22:31:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8662 transitions. [2023-12-19 22:31:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 22:31:23,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:23,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 22:31:23,680 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:23,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1180395399, now seen corresponding path program 1 times [2023-12-19 22:31:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479370002] [2023-12-19 22:31:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:31:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:31:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:31:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:31:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:31:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:31:24,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:24,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479370002] [2023-12-19 22:31:24,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479370002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:24,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:31:24,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 22:31:24,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872362653] [2023-12-19 22:31:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:24,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 22:31:24,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 22:31:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:31:24,683 INFO L87 Difference]: Start difference. First operand 5234 states and 8662 transitions. Second operand has 16 states, 16 states have (on average 5.4375) internal successors, (87), 12 states have internal predecessors, (87), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-19 22:31:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:31:39,895 INFO L93 Difference]: Finished difference Result 17022 states and 29638 transitions. [2023-12-19 22:31:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 22:31:39,896 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 12 states have internal predecessors, (87), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 114 [2023-12-19 22:31:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:31:39,942 INFO L225 Difference]: With dead ends: 17022 [2023-12-19 22:31:39,942 INFO L226 Difference]: Without dead ends: 11861 [2023-12-19 22:31:39,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 22:31:39,964 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 6766 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 7099 mSolverCounterSat, 2263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6766 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 9362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2263 IncrementalHoareTripleChecker+Valid, 7099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:31:39,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6766 Valid, 3017 Invalid, 9362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2263 Valid, 7099 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-19 22:31:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2023-12-19 22:31:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 9310. [2023-12-19 22:31:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9310 states, 7189 states have (on average 1.5761580191959939) internal successors, (11331), 7292 states have internal predecessors, (11331), 1566 states have call successors, (1566), 417 states have call predecessors, (1566), 554 states have return successors, (2641), 1655 states have call predecessors, (2641), 1561 states have call successors, (2641) [2023-12-19 22:31:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9310 states to 9310 states and 15538 transitions. [2023-12-19 22:31:41,798 INFO L78 Accepts]: Start accepts. Automaton has 9310 states and 15538 transitions. Word has length 114 [2023-12-19 22:31:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:31:41,798 INFO L495 AbstractCegarLoop]: Abstraction has 9310 states and 15538 transitions. [2023-12-19 22:31:41,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.4375) internal successors, (87), 12 states have internal predecessors, (87), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-19 22:31:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9310 states and 15538 transitions. [2023-12-19 22:31:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 22:31:41,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:31:41,801 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:31:41,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:31:41,801 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:31:41,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:31:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 264854277, now seen corresponding path program 1 times [2023-12-19 22:31:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:31:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439109556] [2023-12-19 22:31:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:31:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:31:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:31:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:31:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:31:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:31:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:31:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 22:31:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:31:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:31:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:31:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:31:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:31:42,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:31:42,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439109556] [2023-12-19 22:31:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439109556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:31:42,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:31:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-19 22:31:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839065957] [2023-12-19 22:31:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:31:42,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 22:31:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:31:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 22:31:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:31:42,946 INFO L87 Difference]: Start difference. First operand 9310 states and 15538 transitions. Second operand has 22 states, 21 states have (on average 4.142857142857143) internal successors, (87), 16 states have internal predecessors, (87), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-19 22:32:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:09,847 INFO L93 Difference]: Finished difference Result 23861 states and 40737 transitions. [2023-12-19 22:32:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-19 22:32:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.142857142857143) internal successors, (87), 16 states have internal predecessors, (87), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 117 [2023-12-19 22:32:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:09,893 INFO L225 Difference]: With dead ends: 23861 [2023-12-19 22:32:09,893 INFO L226 Difference]: Without dead ends: 14288 [2023-12-19 22:32:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2183 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=1354, Invalid=5786, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 22:32:09,920 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 11131 mSDsluCounter, 6030 mSDsCounter, 0 mSdLazyCounter, 14041 mSolverCounterSat, 3503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11131 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 17544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3503 IncrementalHoareTripleChecker+Valid, 14041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11131 Valid, 6537 Invalid, 17544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3503 Valid, 14041 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-19 22:32:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14288 states. [2023-12-19 22:32:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14288 to 11814. [2023-12-19 22:32:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 9269 states have (on average 1.5702880569640738) internal successors, (14555), 9420 states have internal predecessors, (14555), 1846 states have call successors, (1846), 489 states have call predecessors, (1846), 698 states have return successors, (2977), 1959 states have call predecessors, (2977), 1841 states have call successors, (2977) [2023-12-19 22:32:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 19378 transitions. [2023-12-19 22:32:12,036 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 19378 transitions. Word has length 117 [2023-12-19 22:32:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:12,037 INFO L495 AbstractCegarLoop]: Abstraction has 11814 states and 19378 transitions. [2023-12-19 22:32:12,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.142857142857143) internal successors, (87), 16 states have internal predecessors, (87), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-19 22:32:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 19378 transitions. [2023-12-19 22:32:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 22:32:12,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:12,040 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:12,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 22:32:12,040 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:12,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash -820316583, now seen corresponding path program 1 times [2023-12-19 22:32:12,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:12,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598660316] [2023-12-19 22:32:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:32:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:32:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:32:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:32:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:32:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:32:13,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598660316] [2023-12-19 22:32:13,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598660316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:32:13,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:32:13,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 22:32:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019093497] [2023-12-19 22:32:13,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:32:13,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 22:32:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 22:32:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:32:13,018 INFO L87 Difference]: Start difference. First operand 11814 states and 19378 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-19 22:32:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:34,984 INFO L93 Difference]: Finished difference Result 36573 states and 61738 transitions. [2023-12-19 22:32:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-19 22:32:34,985 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2023-12-19 22:32:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:35,093 INFO L225 Difference]: With dead ends: 36573 [2023-12-19 22:32:35,093 INFO L226 Difference]: Without dead ends: 24833 [2023-12-19 22:32:35,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 22:32:35,131 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 4898 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 10601 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4898 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 12211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 10601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:35,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4898 Valid, 3880 Invalid, 12211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1610 Valid, 10601 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-19 22:32:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24833 states. [2023-12-19 22:32:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24833 to 20554. [2023-12-19 22:32:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20554 states, 16251 states have (on average 1.5730724263122269) internal successors, (25564), 16453 states have internal predecessors, (25564), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2023-12-19 22:32:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20554 states to 20554 states and 33681 transitions. [2023-12-19 22:32:38,903 INFO L78 Accepts]: Start accepts. Automaton has 20554 states and 33681 transitions. Word has length 118 [2023-12-19 22:32:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:32:38,904 INFO L495 AbstractCegarLoop]: Abstraction has 20554 states and 33681 transitions. [2023-12-19 22:32:38,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-19 22:32:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 20554 states and 33681 transitions. [2023-12-19 22:32:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 22:32:38,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:32:38,907 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:32:38,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 22:32:38,907 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:32:38,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:32:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash -758276969, now seen corresponding path program 1 times [2023-12-19 22:32:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:32:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726990144] [2023-12-19 22:32:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:32:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:32:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:32:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:32:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:32:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:32:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 22:32:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:32:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:32:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:32:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:32:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:32:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:32:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:32:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726990144] [2023-12-19 22:32:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726990144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:32:39,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:32:39,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 22:32:39,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941527111] [2023-12-19 22:32:39,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:32:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 22:32:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:32:39,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 22:32:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:32:39,920 INFO L87 Difference]: Start difference. First operand 20554 states and 33681 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:32:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:32:56,922 INFO L93 Difference]: Finished difference Result 46113 states and 77446 transitions. [2023-12-19 22:32:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 22:32:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 118 [2023-12-19 22:32:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:32:57,017 INFO L225 Difference]: With dead ends: 46113 [2023-12-19 22:32:57,018 INFO L226 Difference]: Without dead ends: 25632 [2023-12-19 22:32:57,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=477, Invalid=1245, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 22:32:57,074 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 5753 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 7477 mSolverCounterSat, 2130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5753 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 9607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2130 IncrementalHoareTripleChecker+Valid, 7477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:32:57,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5753 Valid, 2959 Invalid, 9607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2130 Valid, 7477 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-19 22:32:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25632 states. [2023-12-19 22:33:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25632 to 20590. [2023-12-19 22:33:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20590 states, 16287 states have (on average 1.571805734634985) internal successors, (25600), 16489 states have internal predecessors, (25600), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2023-12-19 22:33:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20590 states to 20590 states and 33717 transitions. [2023-12-19 22:33:00,832 INFO L78 Accepts]: Start accepts. Automaton has 20590 states and 33717 transitions. Word has length 118 [2023-12-19 22:33:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:33:00,833 INFO L495 AbstractCegarLoop]: Abstraction has 20590 states and 33717 transitions. [2023-12-19 22:33:00,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 22:33:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 20590 states and 33717 transitions. [2023-12-19 22:33:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 22:33:00,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:33:00,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:33:00,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 22:33:00,836 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:33:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:33:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -807262614, now seen corresponding path program 1 times [2023-12-19 22:33:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:33:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135640659] [2023-12-19 22:33:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:33:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:33:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:33:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:33:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:33:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:33:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:33:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:33:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:33:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:33:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:33:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135640659] [2023-12-19 22:33:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135640659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:33:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19783869] [2023-12-19 22:33:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:01,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:33:01,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:33:01,883 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 22:33:01,886 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 22:33:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:02,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 22:33:02,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:33:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:33:02,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:33:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19783869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:33:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:33:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [21] total 24 [2023-12-19 22:33:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481971975] [2023-12-19 22:33:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:33:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:33:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:33:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:33:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:33:02,332 INFO L87 Difference]: Start difference. First operand 20590 states and 33717 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-19 22:33:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:33:06,332 INFO L93 Difference]: Finished difference Result 20739 states and 33978 transitions. [2023-12-19 22:33:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:33:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 120 [2023-12-19 22:33:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:33:06,394 INFO L225 Difference]: With dead ends: 20739 [2023-12-19 22:33:06,394 INFO L226 Difference]: Without dead ends: 20724 [2023-12-19 22:33:06,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-19 22:33:06,409 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 876 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:33:06,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1527 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 22:33:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2023-12-19 22:33:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 20598. [2023-12-19 22:33:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20598 states, 16295 states have (on average 1.5715250076710647) internal successors, (25608), 16497 states have internal predecessors, (25608), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2023-12-19 22:33:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20598 states to 20598 states and 33725 transitions. [2023-12-19 22:33:10,211 INFO L78 Accepts]: Start accepts. Automaton has 20598 states and 33725 transitions. Word has length 120 [2023-12-19 22:33:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:33:10,211 INFO L495 AbstractCegarLoop]: Abstraction has 20598 states and 33725 transitions. [2023-12-19 22:33:10,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-19 22:33:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 20598 states and 33725 transitions. [2023-12-19 22:33:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 22:33:10,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:33:10,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:33:10,224 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 22:33:10,420 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,SelfDestructingSolverStorable26 [2023-12-19 22:33:10,421 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:33:10,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:33:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -643142943, now seen corresponding path program 1 times [2023-12-19 22:33:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:33:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830027022] [2023-12-19 22:33:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:33:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:33:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:33:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:33:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:33:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:33:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:33:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:33:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:33:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:33:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:33:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:33:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830027022] [2023-12-19 22:33:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830027022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:33:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:33:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:33:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839602197] [2023-12-19 22:33:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:33:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:33:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:33:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:33:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:33:11,314 INFO L87 Difference]: Start difference. First operand 20598 states and 33725 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-19 22:33:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:33:32,014 INFO L93 Difference]: Finished difference Result 59225 states and 103021 transitions. [2023-12-19 22:33:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-19 22:33:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 125 [2023-12-19 22:33:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:33:32,177 INFO L225 Difference]: With dead ends: 59225 [2023-12-19 22:33:32,177 INFO L226 Difference]: Without dead ends: 38704 [2023-12-19 22:33:32,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=664, Invalid=2996, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 22:33:32,247 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 7026 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 2193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7039 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 7296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2193 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:33:32,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7039 Valid, 2923 Invalid, 7296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2193 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-19 22:33:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38704 states. [2023-12-19 22:33:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38704 to 32140. [2023-12-19 22:33:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32140 states, 25275 states have (on average 1.559683481701286) internal successors, (39421), 25663 states have internal predecessors, (39421), 4942 states have call successors, (4942), 1375 states have call predecessors, (4942), 1922 states have return successors, (8800), 5277 states have call predecessors, (8800), 4937 states have call successors, (8800) [2023-12-19 22:33:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32140 states to 32140 states and 53163 transitions. [2023-12-19 22:33:38,711 INFO L78 Accepts]: Start accepts. Automaton has 32140 states and 53163 transitions. Word has length 125 [2023-12-19 22:33:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:33:38,711 INFO L495 AbstractCegarLoop]: Abstraction has 32140 states and 53163 transitions. [2023-12-19 22:33:38,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-19 22:33:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 32140 states and 53163 transitions. [2023-12-19 22:33:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:33:38,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:33:38,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:33:38,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 22:33:38,715 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:33:38,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:33:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1916313892, now seen corresponding path program 1 times [2023-12-19 22:33:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:33:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387706204] [2023-12-19 22:33:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:33:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:33:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:33:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:33:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:33:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:33:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:33:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:33:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 22:33:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:33:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:33:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:33:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:33:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:33:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:33:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387706204] [2023-12-19 22:33:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387706204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:33:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746310953] [2023-12-19 22:33:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:33:39,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:33:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:33:39,788 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 22:33:39,790 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 22:33:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:33:40,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 22:33:40,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:33:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:33:40,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:33:40,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746310953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:33:40,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:33:40,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 27 [2023-12-19 22:33:40,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712265331] [2023-12-19 22:33:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:33:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:33:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:33:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:33:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-12-19 22:33:40,633 INFO L87 Difference]: Start difference. First operand 32140 states and 53163 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:33:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:33:55,053 INFO L93 Difference]: Finished difference Result 84477 states and 141218 transitions. [2023-12-19 22:33:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:33:55,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 135 [2023-12-19 22:33:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:33:55,310 INFO L225 Difference]: With dead ends: 84477 [2023-12-19 22:33:55,310 INFO L226 Difference]: Without dead ends: 52408 [2023-12-19 22:33:55,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2023-12-19 22:33:55,413 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 4327 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 4869 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 5642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 4869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:33:55,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 1976 Invalid, 5642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 4869 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 22:33:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52408 states. [2023-12-19 22:34:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52408 to 50346. [2023-12-19 22:34:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50346 states, 39800 states have (on average 1.5608793969849246) internal successors, (62123), 40384 states have internal predecessors, (62123), 7514 states have call successors, (7514), 2156 states have call predecessors, (7514), 3031 states have return successors, (14468), 7981 states have call predecessors, (14468), 7509 states have call successors, (14468) [2023-12-19 22:34:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50346 states to 50346 states and 84105 transitions. [2023-12-19 22:34:06,134 INFO L78 Accepts]: Start accepts. Automaton has 50346 states and 84105 transitions. Word has length 135 [2023-12-19 22:34:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:34:06,134 INFO L495 AbstractCegarLoop]: Abstraction has 50346 states and 84105 transitions. [2023-12-19 22:34:06,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 22:34:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 50346 states and 84105 transitions. [2023-12-19 22:34:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 22:34:06,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:34:06,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:06,146 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 22:34:06,338 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,SelfDestructingSolverStorable28 [2023-12-19 22:34:06,338 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:34:06,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:34:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1018734641, now seen corresponding path program 1 times [2023-12-19 22:34:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:34:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489138358] [2023-12-19 22:34:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:34:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:34:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:34:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:34:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:34:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:34:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:34:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:34:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:34:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:34:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 22:34:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:34:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:34:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:34:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:34:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:34:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:34:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 22:34:07,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:34:07,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489138358] [2023-12-19 22:34:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489138358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:34:07,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:34:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 22:34:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126679583] [2023-12-19 22:34:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:34:07,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 22:34:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:34:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 22:34:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:34:07,446 INFO L87 Difference]: Start difference. First operand 50346 states and 84105 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:34:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:34:45,909 INFO L93 Difference]: Finished difference Result 157118 states and 298783 transitions. [2023-12-19 22:34:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 22:34:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2023-12-19 22:34:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:34:46,986 INFO L225 Difference]: With dead ends: 157118 [2023-12-19 22:34:46,987 INFO L226 Difference]: Without dead ends: 106843 [2023-12-19 22:34:47,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=392, Invalid=1678, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 22:34:47,290 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 4722 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 7299 mSolverCounterSat, 1419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 8718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 7299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:34:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 3487 Invalid, 8718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1419 Valid, 7299 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-19 22:34:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106843 states. [2023-12-19 22:35:06,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106843 to 90350. [2023-12-19 22:35:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90350 states, 71309 states have (on average 1.5467612783800082) internal successors, (110298), 72509 states have internal predecessors, (110298), 13399 states have call successors, (13399), 3903 states have call predecessors, (13399), 5641 states have return successors, (32974), 14289 states have call predecessors, (32974), 13394 states have call successors, (32974) [2023-12-19 22:35:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90350 states to 90350 states and 156671 transitions. [2023-12-19 22:35:07,587 INFO L78 Accepts]: Start accepts. Automaton has 90350 states and 156671 transitions. Word has length 140 [2023-12-19 22:35:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:35:07,588 INFO L495 AbstractCegarLoop]: Abstraction has 90350 states and 156671 transitions. [2023-12-19 22:35:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 22:35:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 90350 states and 156671 transitions. [2023-12-19 22:35:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-19 22:35:07,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:35:07,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:35:07,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 22:35:07,593 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:35:07,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:35:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 287493864, now seen corresponding path program 1 times [2023-12-19 22:35:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:35:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175144866] [2023-12-19 22:35:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:35:07,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:35:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:35:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 22:35:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:35:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:35:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:35:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:35:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:35:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:35:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:35:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:35:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 22:35:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:35:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:35:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:35:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:35:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:35:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:35:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:35:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 22:35:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:35:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175144866] [2023-12-19 22:35:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175144866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:35:08,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:35:08,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 22:35:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416943913] [2023-12-19 22:35:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:35:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 22:35:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:35:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 22:35:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:35:08,489 INFO L87 Difference]: Start difference. First operand 90350 states and 156671 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-12-19 22:36:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:36:18,952 INFO L93 Difference]: Finished difference Result 308082 states and 664811 transitions. [2023-12-19 22:36:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 22:36:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 157 [2023-12-19 22:36:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:36:21,981 INFO L225 Difference]: With dead ends: 308082 [2023-12-19 22:36:21,981 INFO L226 Difference]: Without dead ends: 217803 [2023-12-19 22:36:23,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2023-12-19 22:36:23,188 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 3923 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4006 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 4298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:36:23,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4006 Valid, 2454 Invalid, 4298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 22:36:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217803 states.