/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_spec14_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:38:59,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:38:59,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:38:59,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:38:59,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:38:59,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:38:59,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:38:59,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:38:59,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:38:59,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:38:59,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:38:59,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:38:59,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:38:59,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:38:59,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:38:59,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:38:59,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:38:59,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:38:59,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:38:59,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:38:59,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:38:59,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:38:59,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:38:59,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:38:59,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:38:59,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:38:59,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:38:59,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:38:59,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:38:59,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:38:59,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:38:59,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:38:59,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:38:59,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:38:59,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:38:59,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:38:59,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:38:59,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:38:59,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:38:59,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:38:59,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:38:59,457 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 [2023-04-02 23:38:59,483 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:38:59,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:38:59,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:38:59,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:38:59,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:38:59,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:38:59,484 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:38:59,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:38:59,484 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:38:59,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:38:59,485 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:38:59,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:38:59,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:38:59,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:38:59,486 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:38:59,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:38:59,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:38:59,486 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:38:59,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:38:59,486 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:38:59,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:38:59,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:38:59,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:38:59,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:38:59,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:38:59,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:38:59,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:38:59,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:38:59,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:38:59,704 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:38:59,704 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:38:59,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c [2023-04-02 23:39:00,713 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:39:00,932 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:39:00,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c [2023-04-02 23:39:00,944 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0534fb68c/7979017b44244a9da76c44948ea5dd5f/FLAGe4a993dc3 [2023-04-02 23:39:01,273 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0534fb68c/7979017b44244a9da76c44948ea5dd5f [2023-04-02 23:39:01,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:39:01,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:39:01,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:39:01,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:39:01,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:39:01,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afd92af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01, skipping insertion in model container [2023-04-02 23:39:01,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:39:01,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:39:01,428 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_spec14_product27.cil.c[1546,1559] [2023-04-02 23:39:01,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:39:01,659 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:39:01,668 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_spec14_product27.cil.c[1546,1559] [2023-04-02 23:39:01,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:39:01,781 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:39:01,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01 WrapperNode [2023-04-02 23:39:01,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:39:01,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:39:01,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:39:01,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:39:01,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:39:01,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:39:01,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:39:01,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:39:01,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (1/1) ... [2023-04-02 23:39:01,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:39:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:01,994 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) [2023-04-02 23:39:02,041 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 [2023-04-02 23:39:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:39:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:39:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:39:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:39:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:39:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:39:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:39:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:39:02,072 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:39:02,073 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:39:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:39:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:39:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:39:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:39:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:39:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:39:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:39:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:39:02,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:39:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:39:02,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:39:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:39:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:39:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:39:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:39:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:39:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:39:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:39:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:39:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:39:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:39:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:39:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:39:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:39:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:39:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2023-04-02 23:39:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:39:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:39:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:39:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:39:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:39:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:39:02,259 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:39:02,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:39:03,293 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:39:03,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:39:03,905 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:39:03,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:39:03 BoogieIcfgContainer [2023-04-02 23:39:03,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:39:03,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:39:03,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:39:03,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:39:03,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:39:01" (1/3) ... [2023-04-02 23:39:03,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618504e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:39:03, skipping insertion in model container [2023-04-02 23:39:03,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:39:01" (2/3) ... [2023-04-02 23:39:03,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618504e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:39:03, skipping insertion in model container [2023-04-02 23:39:03,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:39:03" (3/3) ... [2023-04-02 23:39:03,915 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2023-04-02 23:39:03,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:39:03,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:39:03,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:39:03,990 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;@786a174f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:39:03,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:39:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 547 states, 315 states have (on average 1.4666666666666666) internal successors, (462), 338 states have internal predecessors, (462), 169 states have call successors, (169), 51 states have call predecessors, (169), 51 states have return successors, (169), 164 states have call predecessors, (169), 169 states have call successors, (169) [2023-04-02 23:39:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 23:39:04,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:04,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:39:04,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:04,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -562060019, now seen corresponding path program 1 times [2023-04-02 23:39:04,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:04,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186141581] [2023-04-02 23:39:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:39:04,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186141581] [2023-04-02 23:39:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186141581] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:04,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:39:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:39:04,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524881327] [2023-04-02 23:39:04,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:04,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:39:04,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:39:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:39:04,933 INFO L87 Difference]: Start difference. First operand has 547 states, 315 states have (on average 1.4666666666666666) internal successors, (462), 338 states have internal predecessors, (462), 169 states have call successors, (169), 51 states have call predecessors, (169), 51 states have return successors, (169), 164 states have call predecessors, (169), 169 states have call successors, (169) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 23:39:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:05,584 INFO L93 Difference]: Finished difference Result 1243 states and 1870 transitions. [2023-04-02 23:39:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:39:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 110 [2023-04-02 23:39:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:05,598 INFO L225 Difference]: With dead ends: 1243 [2023-04-02 23:39:05,598 INFO L226 Difference]: Without dead ends: 818 [2023-04-02 23:39:05,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:39:05,605 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 606 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:39:05,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 2435 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:39:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-04-02 23:39:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 811. [2023-04-02 23:39:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 510 states have (on average 1.503921568627451) internal successors, (767), 539 states have internal predecessors, (767), 220 states have call successors, (220), 85 states have call predecessors, (220), 80 states have return successors, (223), 210 states have call predecessors, (223), 214 states have call successors, (223) [2023-04-02 23:39:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1210 transitions. [2023-04-02 23:39:05,673 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1210 transitions. Word has length 110 [2023-04-02 23:39:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:05,674 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1210 transitions. [2023-04-02 23:39:05,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 23:39:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1210 transitions. [2023-04-02 23:39:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 23:39:05,677 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:05,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:39:05,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:39:05,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:05,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:05,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1657922370, now seen corresponding path program 1 times [2023-04-02 23:39:05,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:05,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773261001] [2023-04-02 23:39:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:05,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:39:06,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773261001] [2023-04-02 23:39:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773261001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:39:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:39:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768321396] [2023-04-02 23:39:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:39:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:39:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:39:06,196 INFO L87 Difference]: Start difference. First operand 811 states and 1210 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 23:39:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:06,880 INFO L93 Difference]: Finished difference Result 943 states and 1372 transitions. [2023-04-02 23:39:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:39:06,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 114 [2023-04-02 23:39:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:06,889 INFO L225 Difference]: With dead ends: 943 [2023-04-02 23:39:06,889 INFO L226 Difference]: Without dead ends: 940 [2023-04-02 23:39:06,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:39:06,894 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 737 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:39:06,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 3005 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 23:39:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-04-02 23:39:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 932. [2023-04-02 23:39:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 580 states have (on average 1.4655172413793103) internal successors, (850), 608 states have internal predecessors, (850), 250 states have call successors, (250), 106 states have call predecessors, (250), 101 states have return successors, (260), 241 states have call predecessors, (260), 243 states have call successors, (260) [2023-04-02 23:39:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1360 transitions. [2023-04-02 23:39:06,951 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1360 transitions. Word has length 114 [2023-04-02 23:39:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:06,951 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1360 transitions. [2023-04-02 23:39:06,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 23:39:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1360 transitions. [2023-04-02 23:39:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 23:39:06,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:06,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:39:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:39:06,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:06,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -925239132, now seen corresponding path program 1 times [2023-04-02 23:39:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118813659] [2023-04-02 23:39:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-02 23:39:07,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118813659] [2023-04-02 23:39:07,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118813659] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:39:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:39:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486328827] [2023-04-02 23:39:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:39:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:39:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:39:07,197 INFO L87 Difference]: Start difference. First operand 932 states and 1360 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:39:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:07,334 INFO L93 Difference]: Finished difference Result 1843 states and 2707 transitions. [2023-04-02 23:39:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:39:07,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 150 [2023-04-02 23:39:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:07,339 INFO L225 Difference]: With dead ends: 1843 [2023-04-02 23:39:07,339 INFO L226 Difference]: Without dead ends: 942 [2023-04-02 23:39:07,342 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 [2023-04-02 23:39:07,342 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 10 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2319 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 [2023-04-02 23:39:07,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2319 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:39:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-04-02 23:39:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2023-04-02 23:39:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 587 states have (on average 1.4599659284497444) internal successors, (857), 616 states have internal predecessors, (857), 250 states have call successors, (250), 106 states have call predecessors, (250), 104 states have return successors, (263), 243 states have call predecessors, (263), 243 states have call successors, (263) [2023-04-02 23:39:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1370 transitions. [2023-04-02 23:39:07,426 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1370 transitions. Word has length 150 [2023-04-02 23:39:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:07,426 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1370 transitions. [2023-04-02 23:39:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:39:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1370 transitions. [2023-04-02 23:39:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 23:39:07,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:07,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2023-04-02 23:39:07,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:39:07,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:07,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1650144274, now seen corresponding path program 1 times [2023-04-02 23:39:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904216958] [2023-04-02 23:39:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 23:39:07,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904216958] [2023-04-02 23:39:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904216958] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:39:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414516470] [2023-04-02 23:39:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:07,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:07,695 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) [2023-04-02 23:39:07,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:39:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:08,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:39:08,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:39:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 23:39:08,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:39:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414516470] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:08,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:39:08,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-04-02 23:39:08,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065625855] [2023-04-02 23:39:08,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:08,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:39:08,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:39:08,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:39:08,216 INFO L87 Difference]: Start difference. First operand 942 states and 1370 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:08,435 INFO L93 Difference]: Finished difference Result 1931 states and 2873 transitions. [2023-04-02 23:39:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:39:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 155 [2023-04-02 23:39:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:08,440 INFO L225 Difference]: With dead ends: 1931 [2023-04-02 23:39:08,440 INFO L226 Difference]: Without dead ends: 1020 [2023-04-02 23:39:08,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:39:08,444 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 213 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1533 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 [2023-04-02 23:39:08,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1533 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:39:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-04-02 23:39:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1020. [2023-04-02 23:39:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 663 states have (on average 1.5128205128205128) internal successors, (1003), 692 states have internal predecessors, (1003), 250 states have call successors, (250), 108 states have call predecessors, (250), 106 states have return successors, (263), 243 states have call predecessors, (263), 243 states have call successors, (263) [2023-04-02 23:39:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1516 transitions. [2023-04-02 23:39:08,483 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1516 transitions. Word has length 155 [2023-04-02 23:39:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:08,484 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1516 transitions. [2023-04-02 23:39:08,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1516 transitions. [2023-04-02 23:39:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:39:08,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:08,488 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2023-04-02 23:39:08,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:39:08,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:08,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:08,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1835077714, now seen corresponding path program 1 times [2023-04-02 23:39:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176679390] [2023-04-02 23:39:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-02 23:39:08,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176679390] [2023-04-02 23:39:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176679390] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:39:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781348343] [2023-04-02 23:39:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:08,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:08,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:08,880 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) [2023-04-02 23:39:08,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:39:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:09,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:39:09,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:39:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-02 23:39:09,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:39:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781348343] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:09,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:39:09,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:39:09,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87892951] [2023-04-02 23:39:09,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:09,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:39:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:39:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:39:09,364 INFO L87 Difference]: Start difference. First operand 1020 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:09,572 INFO L93 Difference]: Finished difference Result 2087 states and 3163 transitions. [2023-04-02 23:39:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:39:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 160 [2023-04-02 23:39:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:09,578 INFO L225 Difference]: With dead ends: 2087 [2023-04-02 23:39:09,578 INFO L226 Difference]: Without dead ends: 1098 [2023-04-02 23:39:09,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:39:09,584 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 211 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1533 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 [2023-04-02 23:39:09,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1533 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:39:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-04-02 23:39:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2023-04-02 23:39:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 739 states have (on average 1.5548037889039241) internal successors, (1149), 768 states have internal predecessors, (1149), 250 states have call successors, (250), 110 states have call predecessors, (250), 108 states have return successors, (263), 243 states have call predecessors, (263), 243 states have call successors, (263) [2023-04-02 23:39:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1662 transitions. [2023-04-02 23:39:09,620 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1662 transitions. Word has length 160 [2023-04-02 23:39:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:09,621 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1662 transitions. [2023-04-02 23:39:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1662 transitions. [2023-04-02 23:39:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-02 23:39:09,624 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:09,624 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2023-04-02 23:39:09,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 23:39:09,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:09,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:09,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1564625442, now seen corresponding path program 1 times [2023-04-02 23:39:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852821837] [2023-04-02 23:39:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-02 23:39:10,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852821837] [2023-04-02 23:39:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852821837] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:39:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341798327] [2023-04-02 23:39:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:10,018 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) [2023-04-02 23:39:10,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:39:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:10,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:39:10,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:39:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:39:10,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:39:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341798327] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:39:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:39:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885340409] [2023-04-02 23:39:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:39:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:39:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:39:10,529 INFO L87 Difference]: Start difference. First operand 1098 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:10,739 INFO L93 Difference]: Finished difference Result 2243 states and 3453 transitions. [2023-04-02 23:39:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:39:10,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 164 [2023-04-02 23:39:10,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:10,744 INFO L225 Difference]: With dead ends: 2243 [2023-04-02 23:39:10,745 INFO L226 Difference]: Without dead ends: 1176 [2023-04-02 23:39:10,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:39:10,748 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 209 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1533 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 [2023-04-02 23:39:10,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1533 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:39:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-04-02 23:39:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2023-04-02 23:39:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 815 states have (on average 1.5889570552147239) internal successors, (1295), 844 states have internal predecessors, (1295), 250 states have call successors, (250), 112 states have call predecessors, (250), 110 states have return successors, (263), 243 states have call predecessors, (263), 243 states have call successors, (263) [2023-04-02 23:39:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1808 transitions. [2023-04-02 23:39:10,780 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1808 transitions. Word has length 164 [2023-04-02 23:39:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:10,781 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1808 transitions. [2023-04-02 23:39:10,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1808 transitions. [2023-04-02 23:39:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 23:39:10,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:10,784 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2023-04-02 23:39:10,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 23:39:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:10,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:10,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 861838386, now seen corresponding path program 1 times [2023-04-02 23:39:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916149604] [2023-04-02 23:39:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-02 23:39:11,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916149604] [2023-04-02 23:39:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916149604] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:39:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86793303] [2023-04-02 23:39:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:11,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:39:11,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:39:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:11,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:39:11,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:39:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 23:39:11,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:39:11,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86793303] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:39:11,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:39:11,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:39:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950549291] [2023-04-02 23:39:11,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:39:11,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:39:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:39:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:39:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:39:11,635 INFO L87 Difference]: Start difference. First operand 1176 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:39:11,863 INFO L93 Difference]: Finished difference Result 2399 states and 3743 transitions. [2023-04-02 23:39:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:39:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 167 [2023-04-02 23:39:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:39:11,871 INFO L225 Difference]: With dead ends: 2399 [2023-04-02 23:39:11,872 INFO L226 Difference]: Without dead ends: 1254 [2023-04-02 23:39:11,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:39:11,875 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 207 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:39:11,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1533 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:39:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2023-04-02 23:39:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2023-04-02 23:39:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 891 states have (on average 1.617283950617284) internal successors, (1441), 920 states have internal predecessors, (1441), 250 states have call successors, (250), 114 states have call predecessors, (250), 112 states have return successors, (263), 243 states have call predecessors, (263), 243 states have call successors, (263) [2023-04-02 23:39:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1954 transitions. [2023-04-02 23:39:11,906 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1954 transitions. Word has length 167 [2023-04-02 23:39:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:39:11,906 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 1954 transitions. [2023-04-02 23:39:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:39:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1954 transitions. [2023-04-02 23:39:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-04-02 23:39:11,910 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:39:11,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:39:11,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 23:39:12,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:12,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:39:12,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:39:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1439035232, now seen corresponding path program 1 times [2023-04-02 23:39:12,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:39:12,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297896102] [2023-04-02 23:39:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:12,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:39:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 23:39:12,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:39:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297896102] [2023-04-02 23:39:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297896102] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:39:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962517783] [2023-04-02 23:39:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:39:12,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:39:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:39:12,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:39:12,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:39:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:39:12,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 23:39:12,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:39:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-04-02 23:39:13,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:39:54,502 WARN L223 SmtUtils]: Spent 38.30s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:40:29,740 WARN L223 SmtUtils]: Spent 34.32s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:40:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-04-02 23:40:31,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962517783] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:40:31,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610691309] [2023-04-02 23:40:31,473 INFO L159 IcfgInterpreter]: Started Sifa with 131 locations of interest [2023-04-02 23:40:31,473 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:40:31,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:40:31,479 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:40:31,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:40:33,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 172 for LOIs [2023-04-02 23:40:33,539 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 222 for LOIs [2023-04-02 23:40:35,715 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 222 for LOIs [2023-04-02 23:40:36,040 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 222 for LOIs [2023-04-02 23:40:39,271 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...