/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_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:42:48,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:42:48,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:42:48,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:42:48,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:42:48,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:42:48,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:42:48,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:42:48,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:42:48,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:42:48,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:42:48,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:42:48,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:42:48,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:42:48,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:42:48,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:42:48,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:42:48,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:42:48,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:42:48,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:42:48,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:42:48,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:42:48,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:42:48,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:42:48,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:42:48,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:42:48,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:42:48,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:42:48,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:42:48,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:42:48,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:42:48,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:42:48,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:42:48,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:42:48,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:42:48,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:42:48,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:42:48,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:42:48,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:42:48,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:42:48,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:42:48,450 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 23:42:48,469 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:42:48,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:42:48,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:42:48,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:42:48,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:42:48,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:42:48,471 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:42:48,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:42:48,471 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:42:48,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:42:48,471 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:42:48,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:42:48,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:42:48,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:42:48,472 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:42:48,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:42:48,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:42:48,473 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:42:48,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:42:48,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:42:48,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:42:48,475 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:42:48,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:42:48,475 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:42:48,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:42:48,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:42:48,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:42:48,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:42:48,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:42:48,476 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:42:48,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:42:48,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:42:48,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:42:48,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:42:48,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:42:48,705 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:42:48,706 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:42:48,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-04-02 23:42:49,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:42:50,147 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:42:50,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-04-02 23:42:50,172 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dca1a6a8/ba0c724e6b5649119664a032a9e24a43/FLAGa9e9368ff [2023-04-02 23:42:50,186 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dca1a6a8/ba0c724e6b5649119664a032a9e24a43 [2023-04-02 23:42:50,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:42:50,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:42:50,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:42:50,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:42:50,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:42:50,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5e3b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50, skipping insertion in model container [2023-04-02 23:42:50,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:42:50,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:42:50,456 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_spec1_product24.cil.c[11232,11245] [2023-04-02 23:42:50,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:42:50,741 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:42:50,764 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_spec1_product24.cil.c[11232,11245] [2023-04-02 23:42:50,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:42:50,851 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:42:50,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50 WrapperNode [2023-04-02 23:42:50,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:42:50,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:42:50,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:42:50,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:42:50,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:50,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:51,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:51,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:42:51,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:42:51,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:42:51,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:42:51,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (1/1) ... [2023-04-02 23:42:51,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:42:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:42:51,051 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 23:42:51,071 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 23:42:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:42:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:42:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:42:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:42:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:42:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:42:51,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:42:51,103 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:42:51,104 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:42:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:42:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:42:51,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:42:51,107 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:42:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-02 23:42:51,109 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:42:51,109 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:42:51,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:42:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:42:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-02 23:42:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:42:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:42:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:42:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:42:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:42:51,114 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:42:51,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:42:51,116 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:42:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:42:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:42:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:42:51,117 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:42:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:42:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:42:51,118 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:42:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:42:51,119 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:42:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:42:51,121 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:42:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:42:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:42:51,125 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:42:51,126 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:42:51,127 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:42:51,128 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:42:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:42:51,423 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:42:51,427 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:42:52,907 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:42:53,859 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:42:53,859 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:42:53,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:42:53 BoogieIcfgContainer [2023-04-02 23:42:53,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:42:53,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:42:53,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:42:53,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:42:53,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:42:50" (1/3) ... [2023-04-02 23:42:53,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6520bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:42:53, skipping insertion in model container [2023-04-02 23:42:53,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:50" (2/3) ... [2023-04-02 23:42:53,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6520bdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:42:53, skipping insertion in model container [2023-04-02 23:42:53,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:42:53" (3/3) ... [2023-04-02 23:42:53,875 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2023-04-02 23:42:53,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:42:53,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:42:53,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:42:53,972 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;@32150e51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:42:53,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:42:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 610 states, 356 states have (on average 1.4719101123595506) internal successors, (524), 385 states have internal predecessors, (524), 186 states have call successors, (186), 55 states have call predecessors, (186), 55 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-04-02 23:42:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 23:42:54,000 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:54,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:54,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:54,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1176915290, now seen corresponding path program 1 times [2023-04-02 23:42:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:54,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861087523] [2023-04-02 23:42:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:42:55,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:55,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861087523] [2023-04-02 23:42:55,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861087523] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:55,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:55,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:42:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024850995] [2023-04-02 23:42:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:55,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:42:55,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:42:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:42:55,358 INFO L87 Difference]: Start difference. First operand has 610 states, 356 states have (on average 1.4719101123595506) internal successors, (524), 385 states have internal predecessors, (524), 186 states have call successors, (186), 55 states have call predecessors, (186), 55 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:42:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:57,914 INFO L93 Difference]: Finished difference Result 1465 states and 2246 transitions. [2023-04-02 23:42:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:42:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-04-02 23:42:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:57,936 INFO L225 Difference]: With dead ends: 1465 [2023-04-02 23:42:57,936 INFO L226 Difference]: Without dead ends: 1014 [2023-04-02 23:42:57,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:42:57,947 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 2268 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:57,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 467 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 23:42:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-04-02 23:42:58,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 925. [2023-04-02 23:42:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 608 states have (on average 1.5394736842105263) internal successors, (936), 638 states have internal predecessors, (936), 236 states have call successors, (236), 81 states have call predecessors, (236), 80 states have return successors, (238), 215 states have call predecessors, (238), 228 states have call successors, (238) [2023-04-02 23:42:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1410 transitions. [2023-04-02 23:42:58,064 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1410 transitions. Word has length 97 [2023-04-02 23:42:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:58,064 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1410 transitions. [2023-04-02 23:42:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:42:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1410 transitions. [2023-04-02 23:42:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:42:58,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:58,073 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:42:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:42:58,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:58,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1421310172, now seen corresponding path program 1 times [2023-04-02 23:42:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542782056] [2023-04-02 23:42:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:58,978 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 23:42:58,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542782056] [2023-04-02 23:42:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542782056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:58,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:58,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 23:42:58,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457622937] [2023-04-02 23:42:58,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:58,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:42:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:42:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:42:58,982 INFO L87 Difference]: Start difference. First operand 925 states and 1410 transitions. Second operand has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-04-02 23:43:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:03,732 INFO L93 Difference]: Finished difference Result 2813 states and 4304 transitions. [2023-04-02 23:43:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 23:43:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) Word has length 145 [2023-04-02 23:43:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:03,748 INFO L225 Difference]: With dead ends: 2813 [2023-04-02 23:43:03,749 INFO L226 Difference]: Without dead ends: 1941 [2023-04-02 23:43:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:43:03,759 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1660 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 9112 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 10000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 9112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:03,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 1274 Invalid, 10000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [888 Valid, 9112 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 23:43:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2023-04-02 23:43:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1882. [2023-04-02 23:43:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1248 states have (on average 1.517628205128205) internal successors, (1894), 1295 states have internal predecessors, (1894), 464 states have call successors, (464), 157 states have call predecessors, (464), 169 states have return successors, (496), 449 states have call predecessors, (496), 456 states have call successors, (496) [2023-04-02 23:43:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2854 transitions. [2023-04-02 23:43:03,904 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2854 transitions. Word has length 145 [2023-04-02 23:43:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:03,905 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 2854 transitions. [2023-04-02 23:43:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-04-02 23:43:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2854 transitions. [2023-04-02 23:43:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 23:43:03,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:03,909 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:43:03,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:03,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1687542869, now seen corresponding path program 1 times [2023-04-02 23:43:03,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:03,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665946772] [2023-04-02 23:43:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:03,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:04,559 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 23:43:04,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665946772] [2023-04-02 23:43:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665946772] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:43:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188897455] [2023-04-02 23:43:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:04,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:04,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:43:04,563 INFO L87 Difference]: Start difference. First operand 1882 states and 2854 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:07,133 INFO L93 Difference]: Finished difference Result 4643 states and 7087 transitions. [2023-04-02 23:43:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:43:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 146 [2023-04-02 23:43:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:07,157 INFO L225 Difference]: With dead ends: 4643 [2023-04-02 23:43:07,157 INFO L226 Difference]: Without dead ends: 2816 [2023-04-02 23:43:07,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:43:07,174 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1296 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:07,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 551 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 3522 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 23:43:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2023-04-02 23:43:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2775. [2023-04-02 23:43:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 1848 states have (on average 1.524891774891775) internal successors, (2818), 1922 states have internal predecessors, (2818), 673 states have call successors, (673), 232 states have call predecessors, (673), 253 states have return successors, (737), 650 states have call predecessors, (737), 665 states have call successors, (737) [2023-04-02 23:43:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4228 transitions. [2023-04-02 23:43:07,366 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4228 transitions. Word has length 146 [2023-04-02 23:43:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:07,368 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4228 transitions. [2023-04-02 23:43:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4228 transitions. [2023-04-02 23:43:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 23:43:07,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:07,373 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:07,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:43:07,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:07,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1821347058, now seen corresponding path program 1 times [2023-04-02 23:43:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181088237] [2023-04-02 23:43:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:07,840 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 23:43:07,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181088237] [2023-04-02 23:43:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181088237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:43:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47846729] [2023-04-02 23:43:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:07,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:43:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:43:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:43:07,843 INFO L87 Difference]: Start difference. First operand 2775 states and 4228 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:43:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:08,568 INFO L93 Difference]: Finished difference Result 2827 states and 4310 transitions. [2023-04-02 23:43:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:43:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 150 [2023-04-02 23:43:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:08,585 INFO L225 Difference]: With dead ends: 2827 [2023-04-02 23:43:08,586 INFO L226 Difference]: Without dead ends: 2810 [2023-04-02 23:43:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:08,593 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 714 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:08,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2154 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:43:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2023-04-02 23:43:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2781. [2023-04-02 23:43:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 1854 states have (on average 1.52319309600863) internal successors, (2824), 1928 states have internal predecessors, (2824), 673 states have call successors, (673), 232 states have call predecessors, (673), 253 states have return successors, (737), 650 states have call predecessors, (737), 665 states have call successors, (737) [2023-04-02 23:43:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4234 transitions. [2023-04-02 23:43:08,811 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4234 transitions. Word has length 150 [2023-04-02 23:43:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 2781 states and 4234 transitions. [2023-04-02 23:43:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:43:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4234 transitions. [2023-04-02 23:43:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 23:43:08,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:08,817 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:08,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:43:08,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:08,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 185191431, now seen corresponding path program 1 times [2023-04-02 23:43:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188060373] [2023-04-02 23:43:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:09,305 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 23:43:09,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188060373] [2023-04-02 23:43:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188060373] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:09,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:43:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349624715] [2023-04-02 23:43:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:43:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:43:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:09,307 INFO L87 Difference]: Start difference. First operand 2781 states and 4234 transitions. Second operand has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:43:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:10,039 INFO L93 Difference]: Finished difference Result 2952 states and 4466 transitions. [2023-04-02 23:43:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:43:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 155 [2023-04-02 23:43:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:10,059 INFO L225 Difference]: With dead ends: 2952 [2023-04-02 23:43:10,060 INFO L226 Difference]: Without dead ends: 2935 [2023-04-02 23:43:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:43:10,063 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 706 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:10,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 4523 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:43:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2023-04-02 23:43:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2873. [2023-04-02 23:43:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 1913 states have (on average 1.5154208050182958) internal successors, (2899), 1987 states have internal predecessors, (2899), 693 states have call successors, (693), 245 states have call predecessors, (693), 266 states have return successors, (766), 670 states have call predecessors, (766), 685 states have call successors, (766) [2023-04-02 23:43:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4358 transitions. [2023-04-02 23:43:10,255 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4358 transitions. Word has length 155 [2023-04-02 23:43:10,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:10,256 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4358 transitions. [2023-04-02 23:43:10,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:43:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4358 transitions. [2023-04-02 23:43:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-02 23:43:10,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:10,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:43:10,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:10,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1954387845, now seen corresponding path program 1 times [2023-04-02 23:43:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:10,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883675325] [2023-04-02 23:43:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:15,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883675325] [2023-04-02 23:43:15,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883675325] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:43:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819512636] [2023-04-02 23:43:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:43:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:15,595 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 23:43:15,627 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 23:43:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:16,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 23:43:16,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:43:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:43:16,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:43:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819512636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:16,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:43:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2023-04-02 23:43:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961301399] [2023-04-02 23:43:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:16,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 23:43:16,469 INFO L87 Difference]: Start difference. First operand 2873 states and 4358 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:43:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:16,872 INFO L93 Difference]: Finished difference Result 2964 states and 4470 transitions. [2023-04-02 23:43:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:43:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) Word has length 170 [2023-04-02 23:43:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:16,889 INFO L225 Difference]: With dead ends: 2964 [2023-04-02 23:43:16,889 INFO L226 Difference]: Without dead ends: 2947 [2023-04-02 23:43:16,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:43:16,893 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 9 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4030 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:43:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-04-02 23:43:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2927. [2023-04-02 23:43:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 1949 states have (on average 1.5059004617752694) internal successors, (2935), 2023 states have internal predecessors, (2935), 693 states have call successors, (693), 245 states have call predecessors, (693), 284 states have return successors, (784), 688 states have call predecessors, (784), 685 states have call successors, (784) [2023-04-02 23:43:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4412 transitions. [2023-04-02 23:43:17,093 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4412 transitions. Word has length 170 [2023-04-02 23:43:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:17,093 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 4412 transitions. [2023-04-02 23:43:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:43:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4412 transitions. [2023-04-02 23:43:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-02 23:43:17,098 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:17,098 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:17,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 23:43:17,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-02 23:43:17,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:17,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1510275438, now seen corresponding path program 1 times [2023-04-02 23:43:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984987077] [2023-04-02 23:43:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 23:43:19,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:19,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984987077] [2023-04-02 23:43:19,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984987077] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:43:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079990326] [2023-04-02 23:43:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:19,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:43:19,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:19,576 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 23:43:19,578 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 23:43:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:20,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-02 23:43:20,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:43:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 23:43:20,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:44:03,983 WARN L223 SmtUtils]: Spent 42.41s 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 23:44:48,900 WARN L223 SmtUtils]: Spent 41.95s 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 23:45:30,886 WARN L223 SmtUtils]: Spent 41.42s 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)