/usr/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:35:41,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:35:41,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:35:41,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:35:41,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:35:41,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:35:41,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:35:41,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:35:41,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:35:41,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:35:41,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:35:41,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:35:41,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:35:41,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:35:41,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:35:41,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:35:41,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:35:41,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:35:41,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:35:41,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:35:41,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:35:41,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:35:41,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:35:41,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:35:41,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:35:41,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:35:41,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:35:41,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:35:41,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:35:41,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:35:41,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:35:41,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:35:41,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:35:41,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:35:41,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:35:41,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:35:41,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:35:41,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:35:41,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:35:41,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:35:41,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:35:41,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:35:42,028 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:35:42,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:35:42,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:35:42,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:35:42,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:35:42,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:35:42,031 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:35:42,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:35:42,031 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:35:42,032 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:35:42,032 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:35:42,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:35:42,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:35:42,033 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:35:42,033 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:35:42,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:35:42,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:35:42,033 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:35:42,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:35:42,034 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:35:42,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:35:42,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:35:42,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:35:42,036 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:35:42,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:35:42,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:35:42,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:35:42,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:35:42,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:35:42,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:35:42,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:35:42,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:35:42,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:35:42,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:35:42,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:35:42,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:35:42,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:35:42,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:35:42,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:35:42,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:35:42,294 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:35:42,295 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:35:42,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2023-04-01 05:35:43,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:35:43,802 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:35:43,802 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2023-04-01 05:35:43,828 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03bf02f5c/566ea7f6f7e94e90814a062c56f2bf2d/FLAGb8adbdc48 [2023-04-01 05:35:43,848 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03bf02f5c/566ea7f6f7e94e90814a062c56f2bf2d [2023-04-01 05:35:43,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:35:43,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:35:43,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:35:43,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:35:43,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:35:43,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:35:43" (1/1) ... [2023-04-01 05:35:43,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585f64e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:43, skipping insertion in model container [2023-04-01 05:35:43,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:35:43" (1/1) ... [2023-04-01 05:35:43,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:35:43,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:35:44,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2023-04-01 05:35:44,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:35:44,419 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:35:44,463 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2023-04-01 05:35:44,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:35:44,521 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:35:44,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44 WrapperNode [2023-04-01 05:35:44,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:35:44,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:35:44,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:35:44,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:35:44,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:35:44,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:35:44,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:35:44,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:35:44,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (1/1) ... [2023-04-01 05:35:44,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:35:44,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:35:44,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:35:44,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:35:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:35:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:35:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:35:44,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 05:35:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 05:35:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-01 05:35:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 05:35:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 05:35:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:35:44,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-04-01 05:35:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-04-01 05:35:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2023-04-01 05:35:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2023-04-01 05:35:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 05:35:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 05:35:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 05:35:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 05:35:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 05:35:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 05:35:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 05:35:44,789 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:35:44,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:35:44,791 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:35:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:35:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:35:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:35:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:35:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:35:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:35:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 05:35:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 05:35:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-01 05:35:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 05:35:44,796 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 05:35:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:35:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 05:35:44,797 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 05:35:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:35:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 05:35:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 05:35:44,799 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 05:35:44,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2023-04-01 05:35:44,801 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 05:35:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-04-01 05:35:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 05:35:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:35:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:35:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:35:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:35:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:35:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:35:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:35:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:35:45,098 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:35:45,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:35:46,474 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:35:47,264 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:35:47,265 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 05:35:47,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:35:47 BoogieIcfgContainer [2023-04-01 05:35:47,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:35:47,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:35:47,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:35:47,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:35:47,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:35:43" (1/3) ... [2023-04-01 05:35:47,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea41ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:35:47, skipping insertion in model container [2023-04-01 05:35:47,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:44" (2/3) ... [2023-04-01 05:35:47,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea41ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:35:47, skipping insertion in model container [2023-04-01 05:35:47,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:35:47" (3/3) ... [2023-04-01 05:35:47,280 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2023-04-01 05:35:47,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:35:47,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:35:47,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:35:47,370 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@21baadea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:35:47,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:35:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 333 states have (on average 1.4894894894894894) internal successors, (496), 360 states have internal predecessors, (496), 173 states have call successors, (173), 50 states have call predecessors, (173), 50 states have return successors, (173), 164 states have call predecessors, (173), 173 states have call successors, (173) [2023-04-01 05:35:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 05:35:47,397 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:47,397 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:47,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:47,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 669960280, now seen corresponding path program 1 times [2023-04-01 05:35:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825340566] [2023-04-01 05:35:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:47,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:47,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:47,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825340566] [2023-04-01 05:35:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825340566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:35:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700630033] [2023-04-01 05:35:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:47,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:35:47,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:35:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:35:48,018 INFO L87 Difference]: Start difference. First operand has 569 states, 333 states have (on average 1.4894894894894894) internal successors, (496), 360 states have internal predecessors, (496), 173 states have call successors, (173), 50 states have call predecessors, (173), 50 states have return successors, (173), 164 states have call predecessors, (173), 173 states have call successors, (173) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-01 05:35:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:48,199 INFO L93 Difference]: Finished difference Result 472 states and 703 transitions. [2023-04-01 05:35:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:35:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 112 [2023-04-01 05:35:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:48,223 INFO L225 Difference]: With dead ends: 472 [2023-04-01 05:35:48,223 INFO L226 Difference]: Without dead ends: 438 [2023-04-01 05:35:48,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:35:48,230 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:48,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:35:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-04-01 05:35:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2023-04-01 05:35:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 277 states have (on average 1.5306859205776173) internal successors, (424), 296 states have internal predecessors, (424), 118 states have call successors, (118), 46 states have call predecessors, (118), 42 states have return successors, (110), 107 states have call predecessors, (110), 110 states have call successors, (110) [2023-04-01 05:35:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 652 transitions. [2023-04-01 05:35:48,320 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 652 transitions. Word has length 112 [2023-04-01 05:35:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:48,321 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 652 transitions. [2023-04-01 05:35:48,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-01 05:35:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 652 transitions. [2023-04-01 05:35:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-01 05:35:48,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:48,335 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:48,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:35:48,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:48,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1493189183, now seen corresponding path program 1 times [2023-04-01 05:35:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488517016] [2023-04-01 05:35:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:49,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488517016] [2023-04-01 05:35:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488517016] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:49,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:35:49,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760491053] [2023-04-01 05:35:49,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:49,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:35:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:35:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:35:49,156 INFO L87 Difference]: Start difference. First operand 438 states and 652 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-04-01 05:35:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:51,687 INFO L93 Difference]: Finished difference Result 1241 states and 1893 transitions. [2023-04-01 05:35:51,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:35:51,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 113 [2023-04-01 05:35:51,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:51,695 INFO L225 Difference]: With dead ends: 1241 [2023-04-01 05:35:51,696 INFO L226 Difference]: Without dead ends: 845 [2023-04-01 05:35:51,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:35:51,700 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1220 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:51,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 502 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 05:35:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-04-01 05:35:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 820. [2023-04-01 05:35:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 531 states have (on average 1.5461393596986817) internal successors, (821), 564 states have internal predecessors, (821), 214 states have call successors, (214), 77 states have call predecessors, (214), 74 states have return successors, (212), 202 states have call predecessors, (212), 206 states have call successors, (212) [2023-04-01 05:35:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1247 transitions. [2023-04-01 05:35:51,773 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1247 transitions. Word has length 113 [2023-04-01 05:35:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:51,773 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1247 transitions. [2023-04-01 05:35:51,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-04-01 05:35:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1247 transitions. [2023-04-01 05:35:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-01 05:35:51,778 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:51,778 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:35:51,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:51,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -867764656, now seen corresponding path program 1 times [2023-04-01 05:35:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:51,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653226039] [2023-04-01 05:35:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:51,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:52,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653226039] [2023-04-01 05:35:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653226039] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:52,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:35:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209211854] [2023-04-01 05:35:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:52,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:35:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:35:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:35:52,127 INFO L87 Difference]: Start difference. First operand 820 states and 1247 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 05:35:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:52,695 INFO L93 Difference]: Finished difference Result 859 states and 1303 transitions. [2023-04-01 05:35:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:52,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 117 [2023-04-01 05:35:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:52,708 INFO L225 Difference]: With dead ends: 859 [2023-04-01 05:35:52,708 INFO L226 Difference]: Without dead ends: 842 [2023-04-01 05:35:52,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:52,715 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 669 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:52,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1994 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 05:35:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-04-01 05:35:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 824. [2023-04-01 05:35:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 535 states have (on average 1.5420560747663552) internal successors, (825), 568 states have internal predecessors, (825), 214 states have call successors, (214), 77 states have call predecessors, (214), 74 states have return successors, (212), 202 states have call predecessors, (212), 206 states have call successors, (212) [2023-04-01 05:35:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1251 transitions. [2023-04-01 05:35:52,787 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1251 transitions. Word has length 117 [2023-04-01 05:35:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:52,790 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1251 transitions. [2023-04-01 05:35:52,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 05:35:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1251 transitions. [2023-04-01 05:35:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-01 05:35:52,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:52,798 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:52,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:35:52,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:52,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1004962158, now seen corresponding path program 1 times [2023-04-01 05:35:52,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:52,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87340586] [2023-04-01 05:35:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:53,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:53,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87340586] [2023-04-01 05:35:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87340586] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:53,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 05:35:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014296468] [2023-04-01 05:35:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:35:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:35:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:53,242 INFO L87 Difference]: Start difference. First operand 824 states and 1251 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) [2023-04-01 05:35:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:53,465 INFO L93 Difference]: Finished difference Result 845 states and 1277 transitions. [2023-04-01 05:35:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:35:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) Word has length 122 [2023-04-01 05:35:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:53,471 INFO L225 Difference]: With dead ends: 845 [2023-04-01 05:35:53,471 INFO L226 Difference]: Without dead ends: 828 [2023-04-01 05:35:53,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:35:53,472 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 10 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:53,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4279 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:35:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-04-01 05:35:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 824. [2023-04-01 05:35:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 535 states have (on average 1.5383177570093458) internal successors, (823), 568 states have internal predecessors, (823), 214 states have call successors, (214), 77 states have call predecessors, (214), 74 states have return successors, (212), 202 states have call predecessors, (212), 206 states have call successors, (212) [2023-04-01 05:35:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1249 transitions. [2023-04-01 05:35:53,523 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1249 transitions. Word has length 122 [2023-04-01 05:35:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:53,524 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1249 transitions. [2023-04-01 05:35:53,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) [2023-04-01 05:35:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1249 transitions. [2023-04-01 05:35:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-01 05:35:53,527 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:53,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:35:53,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:53,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1765562646, now seen corresponding path program 1 times [2023-04-01 05:35:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392449896] [2023-04-01 05:35:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:53,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:53,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392449896] [2023-04-01 05:35:53,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392449896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:53,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955335598] [2023-04-01 05:35:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:53,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:53,892 INFO L87 Difference]: Start difference. First operand 824 states and 1249 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:55,347 INFO L93 Difference]: Finished difference Result 2454 states and 3816 transitions. [2023-04-01 05:35:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:55,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 137 [2023-04-01 05:35:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:55,359 INFO L225 Difference]: With dead ends: 2454 [2023-04-01 05:35:55,360 INFO L226 Difference]: Without dead ends: 1672 [2023-04-01 05:35:55,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:55,366 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1223 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:55,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 507 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:35:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2023-04-01 05:35:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1574. [2023-04-01 05:35:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1044 states have (on average 1.553639846743295) internal successors, (1622), 1108 states have internal predecessors, (1622), 392 states have call successors, (392), 131 states have call predecessors, (392), 137 states have return successors, (421), 368 states have call predecessors, (421), 383 states have call successors, (421) [2023-04-01 05:35:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2435 transitions. [2023-04-01 05:35:55,490 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2435 transitions. Word has length 137 [2023-04-01 05:35:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:55,491 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2435 transitions. [2023-04-01 05:35:55,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2435 transitions. [2023-04-01 05:35:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 05:35:55,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:55,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:35:55,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:55,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1100549136, now seen corresponding path program 1 times [2023-04-01 05:35:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311023437] [2023-04-01 05:35:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:55,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:55,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311023437] [2023-04-01 05:35:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311023437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:55,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:55,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405864460] [2023-04-01 05:35:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:55,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:55,892 INFO L87 Difference]: Start difference. First operand 1574 states and 2435 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:57,493 INFO L93 Difference]: Finished difference Result 4649 states and 7352 transitions. [2023-04-01 05:35:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:57,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 138 [2023-04-01 05:35:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:57,514 INFO L225 Difference]: With dead ends: 4649 [2023-04-01 05:35:57,514 INFO L226 Difference]: Without dead ends: 3120 [2023-04-01 05:35:57,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:57,523 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1219 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:57,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 512 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 05:35:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-04-01 05:35:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2999. [2023-04-01 05:35:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2020 states have (on average 1.561881188118812) internal successors, (3155), 2148 states have internal predecessors, (3155), 714 states have call successors, (714), 239 states have call predecessors, (714), 264 states have return successors, (839), 669 states have call predecessors, (839), 703 states have call successors, (839) [2023-04-01 05:35:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4708 transitions. [2023-04-01 05:35:57,763 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4708 transitions. Word has length 138 [2023-04-01 05:35:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:57,763 INFO L495 AbstractCegarLoop]: Abstraction has 2999 states and 4708 transitions. [2023-04-01 05:35:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4708 transitions. [2023-04-01 05:35:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-01 05:35:57,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:57,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:57,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 05:35:57,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:57,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash -244294932, now seen corresponding path program 1 times [2023-04-01 05:35:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:57,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483254] [2023-04-01 05:35:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:58,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483254] [2023-04-01 05:35:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483254] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:58,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:58,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358298597] [2023-04-01 05:35:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:58,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:58,166 INFO L87 Difference]: Start difference. First operand 2999 states and 4708 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:59,916 INFO L93 Difference]: Finished difference Result 8972 states and 14500 transitions. [2023-04-01 05:35:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 139 [2023-04-01 05:35:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:59,959 INFO L225 Difference]: With dead ends: 8972 [2023-04-01 05:35:59,959 INFO L226 Difference]: Without dead ends: 6024 [2023-04-01 05:35:59,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:59,976 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1216 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:59,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 517 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 05:35:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2023-04-01 05:36:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 5858. [2023-04-01 05:36:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 3975 states have (on average 1.5640251572327044) internal successors, (6217), 4235 states have internal predecessors, (6217), 1354 states have call successors, (1354), 455 states have call predecessors, (1354), 528 states have return successors, (1799), 1273 states have call predecessors, (1799), 1339 states have call successors, (1799) [2023-04-01 05:36:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 9370 transitions. [2023-04-01 05:36:00,503 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 9370 transitions. Word has length 139 [2023-04-01 05:36:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:00,503 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 9370 transitions. [2023-04-01 05:36:00,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 9370 transitions. [2023-04-01 05:36:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 05:36:00,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:00,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:36:00,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 05:36:00,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:00,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1015215826, now seen corresponding path program 1 times [2023-04-01 05:36:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:00,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157366115] [2023-04-01 05:36:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:36:00,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:00,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157366115] [2023-04-01 05:36:00,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157366115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:00,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:36:00,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:36:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016166176] [2023-04-01 05:36:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:36:00,816 INFO L87 Difference]: Start difference. First operand 5858 states and 9370 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:02,901 INFO L93 Difference]: Finished difference Result 17643 states and 29527 transitions. [2023-04-01 05:36:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 140 [2023-04-01 05:36:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:03,024 INFO L225 Difference]: With dead ends: 17643 [2023-04-01 05:36:03,024 INFO L226 Difference]: Without dead ends: 11848 [2023-04-01 05:36:03,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:36:03,065 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1213 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 522 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 05:36:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2023-04-01 05:36:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11593. [2023-04-01 05:36:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 7890 states have (on average 1.5628643852978454) internal successors, (12331), 8422 states have internal predecessors, (12331), 2626 states have call successors, (2626), 887 states have call predecessors, (2626), 1076 states have return successors, (4147), 2485 states have call predecessors, (4147), 2603 states have call successors, (4147) [2023-04-01 05:36:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 19104 transitions. [2023-04-01 05:36:04,121 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 19104 transitions. Word has length 140 [2023-04-01 05:36:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:04,121 INFO L495 AbstractCegarLoop]: Abstraction has 11593 states and 19104 transitions. [2023-04-01 05:36:04,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 19104 transitions. [2023-04-01 05:36:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 05:36:04,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:04,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:36:04,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 05:36:04,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:04,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1405347566, now seen corresponding path program 1 times [2023-04-01 05:36:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:04,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330501398] [2023-04-01 05:36:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:36:04,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:04,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330501398] [2023-04-01 05:36:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330501398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:36:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:36:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325697548] [2023-04-01 05:36:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:36:04,491 INFO L87 Difference]: Start difference. First operand 11593 states and 19104 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:07,178 INFO L93 Difference]: Finished difference Result 35062 states and 62223 transitions. [2023-04-01 05:36:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 141 [2023-04-01 05:36:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:07,451 INFO L225 Difference]: With dead ends: 35062 [2023-04-01 05:36:07,451 INFO L226 Difference]: Without dead ends: 23544 [2023-04-01 05:36:07,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:36:07,514 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1210 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:07,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 528 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:36:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23544 states. [2023-04-01 05:36:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23544 to 22958. [2023-04-01 05:36:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22958 states, 15672 states have (on average 1.563552833078101) internal successors, (24504), 16734 states have internal predecessors, (24504), 5153 states have call successors, (5153), 1748 states have call predecessors, (5153), 2132 states have return successors, (9816), 4869 states have call predecessors, (9816), 5115 states have call successors, (9816) [2023-04-01 05:36:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22958 states to 22958 states and 39473 transitions. [2023-04-01 05:36:09,938 INFO L78 Accepts]: Start accepts. Automaton has 22958 states and 39473 transitions. Word has length 141 [2023-04-01 05:36:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:09,940 INFO L495 AbstractCegarLoop]: Abstraction has 22958 states and 39473 transitions. [2023-04-01 05:36:09,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:09,940 INFO L276 IsEmpty]: Start isEmpty. Operand 22958 states and 39473 transitions. [2023-04-01 05:36:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-04-01 05:36:09,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:09,952 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 05:36:09,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:09,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -816516229, now seen corresponding path program 1 times [2023-04-01 05:36:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330475555] [2023-04-01 05:36:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 05:36:10,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:10,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330475555] [2023-04-01 05:36:10,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330475555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:10,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:36:10,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:36:10,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886755202] [2023-04-01 05:36:10,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:36:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:36:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:36:10,287 INFO L87 Difference]: Start difference. First operand 22958 states and 39473 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2023-04-01 05:36:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:12,549 INFO L93 Difference]: Finished difference Result 46295 states and 82637 transitions. [2023-04-01 05:36:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 201 [2023-04-01 05:36:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:12,727 INFO L225 Difference]: With dead ends: 46295 [2023-04-01 05:36:12,727 INFO L226 Difference]: Without dead ends: 23380 [2023-04-01 05:36:12,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:36:12,809 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 10 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:12,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2435 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:36:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23380 states. [2023-04-01 05:36:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23380 to 23230. [2023-04-01 05:36:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23230 states, 15864 states have (on average 1.5567322239031771) internal successors, (24696), 16926 states have internal predecessors, (24696), 5169 states have call successors, (5169), 1748 states have call predecessors, (5169), 2196 states have return successors, (10123), 4949 states have call predecessors, (10123), 5131 states have call successors, (10123) [2023-04-01 05:36:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23230 states to 23230 states and 39988 transitions. [2023-04-01 05:36:14,917 INFO L78 Accepts]: Start accepts. Automaton has 23230 states and 39988 transitions. Word has length 201 [2023-04-01 05:36:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:14,918 INFO L495 AbstractCegarLoop]: Abstraction has 23230 states and 39988 transitions. [2023-04-01 05:36:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2023-04-01 05:36:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23230 states and 39988 transitions. [2023-04-01 05:36:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-04-01 05:36:14,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:14,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:14,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 05:36:14,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:14,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1082430890, now seen corresponding path program 1 times [2023-04-01 05:36:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:14,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497263282] [2023-04-01 05:36:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-01 05:36:15,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497263282] [2023-04-01 05:36:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497263282] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943482064] [2023-04-01 05:36:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:15,343 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) [2023-04-01 05:36:15,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:36:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:15,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:15,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 05:36:16,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:16,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943482064] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:16,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:16,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-04-01 05:36:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357763488] [2023-04-01 05:36:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:36:16,079 INFO L87 Difference]: Start difference. First operand 23230 states and 39988 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 05:36:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:17,890 INFO L93 Difference]: Finished difference Result 48913 states and 87664 transitions. [2023-04-01 05:36:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 206 [2023-04-01 05:36:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:18,094 INFO L225 Difference]: With dead ends: 48913 [2023-04-01 05:36:18,094 INFO L226 Difference]: Without dead ends: 25726 [2023-04-01 05:36:18,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:36:18,180 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 213 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:18,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1620 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25726 states. [2023-04-01 05:36:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25726 to 25726. [2023-04-01 05:36:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25726 states, 18296 states have (on average 1.605159597726279) internal successors, (29368), 19358 states have internal predecessors, (29368), 5169 states have call successors, (5169), 1812 states have call predecessors, (5169), 2260 states have return successors, (10123), 4949 states have call predecessors, (10123), 5131 states have call successors, (10123) [2023-04-01 05:36:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25726 states to 25726 states and 44660 transitions. [2023-04-01 05:36:20,348 INFO L78 Accepts]: Start accepts. Automaton has 25726 states and 44660 transitions. Word has length 206 [2023-04-01 05:36:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:20,349 INFO L495 AbstractCegarLoop]: Abstraction has 25726 states and 44660 transitions. [2023-04-01 05:36:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 05:36:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 25726 states and 44660 transitions. [2023-04-01 05:36:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-04-01 05:36:20,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:20,361 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:20,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:36:20,573 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,SelfDestructingSolverStorable10 [2023-04-01 05:36:20,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:20,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1608678158, now seen corresponding path program 1 times [2023-04-01 05:36:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326344594] [2023-04-01 05:36:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 05:36:20,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326344594] [2023-04-01 05:36:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326344594] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659331704] [2023-04-01 05:36:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:20,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:20,821 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) [2023-04-01 05:36:20,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:36:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:21,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:21,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-01 05:36:21,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:21,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659331704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:21,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:21,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-01 05:36:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765707582] [2023-04-01 05:36:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:21,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:21,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:36:21,492 INFO L87 Difference]: Start difference. First operand 25726 states and 44660 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 05:36:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:23,083 INFO L93 Difference]: Finished difference Result 53905 states and 96942 transitions. [2023-04-01 05:36:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 211 [2023-04-01 05:36:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:23,250 INFO L225 Difference]: With dead ends: 53905 [2023-04-01 05:36:23,250 INFO L226 Difference]: Without dead ends: 28222 [2023-04-01 05:36:23,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:36:23,328 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 211 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:23,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1620 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28222 states. [2023-04-01 05:36:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28222 to 28222. [2023-04-01 05:36:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28222 states, 20728 states have (on average 1.6422230798919337) internal successors, (34040), 21790 states have internal predecessors, (34040), 5169 states have call successors, (5169), 1876 states have call predecessors, (5169), 2324 states have return successors, (10123), 4949 states have call predecessors, (10123), 5131 states have call successors, (10123) [2023-04-01 05:36:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28222 states to 28222 states and 49332 transitions. [2023-04-01 05:36:25,319 INFO L78 Accepts]: Start accepts. Automaton has 28222 states and 49332 transitions. Word has length 211 [2023-04-01 05:36:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:25,320 INFO L495 AbstractCegarLoop]: Abstraction has 28222 states and 49332 transitions. [2023-04-01 05:36:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 05:36:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28222 states and 49332 transitions. [2023-04-01 05:36:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-04-01 05:36:25,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:25,332 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:25,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 05:36:25,544 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,SelfDestructingSolverStorable11 [2023-04-01 05:36:25,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:25,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1088281374, now seen corresponding path program 1 times [2023-04-01 05:36:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:25,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725136319] [2023-04-01 05:36:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 05:36:25,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725136319] [2023-04-01 05:36:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725136319] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074987334] [2023-04-01 05:36:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:25,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:36:25,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:36:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:26,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:26,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 05:36:26,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074987334] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:26,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:26,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-01 05:36:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650712786] [2023-04-01 05:36:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:36:26,469 INFO L87 Difference]: Start difference. First operand 28222 states and 49332 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-04-01 05:36:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:28,038 INFO L93 Difference]: Finished difference Result 58897 states and 106220 transitions. [2023-04-01 05:36:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:28,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 215 [2023-04-01 05:36:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:28,230 INFO L225 Difference]: With dead ends: 58897 [2023-04-01 05:36:28,230 INFO L226 Difference]: Without dead ends: 30718 [2023-04-01 05:36:28,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:36:28,316 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 209 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:28,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1620 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30718 states.