/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_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:54:23,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:54:23,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:54:23,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:54:23,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:54:23,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:54:23,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:54:23,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:54:23,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:54:23,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:54:23,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:54:23,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:54:23,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:54:23,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:54:23,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:54:23,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:54:23,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:54:23,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:54:23,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:54:23,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:54:23,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:54:23,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:54:23,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:54:23,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:54:23,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:54:23,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:54:23,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:54:23,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:54:23,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:54:23,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:54:23,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:54:23,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:54:23,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:54:23,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:54:23,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:54:23,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:54:23,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:54:23,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:54:23,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:54:23,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:54:23,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:54:23,345 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 23:54:23,358 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:54:23,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:54:23,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:54:23,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:54:23,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:54:23,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:54:23,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:54:23,360 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:54:23,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:54:23,365 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:54:23,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:54:23,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:54:23,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:54:23,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:54:23,366 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:54:23,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:54:23,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:54:23,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:54:23,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:54:23,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:54:23,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:54:23,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:54:23,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:54:23,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:54:23,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:54:23,554 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:54:23,554 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:54:23,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2023-04-02 23:54:24,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:54:24,757 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:54:24,757 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2023-04-02 23:54:24,769 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fb3673c/4e79cc5dcfd34458bed3397581a380e1/FLAGded579551 [2023-04-02 23:54:24,779 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fb3673c/4e79cc5dcfd34458bed3397581a380e1 [2023-04-02 23:54:24,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:54:24,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:54:24,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:54:24,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:54:24,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:54:24,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:54:24" (1/1) ... [2023-04-02 23:54:24,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b67945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:24, skipping insertion in model container [2023-04-02 23:54:24,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:54:24" (1/1) ... [2023-04-02 23:54:24,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:54:24,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:54:24,969 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_spec3_product32.cil.c[3233,3246] [2023-04-02 23:54:25,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:54:25,189 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:54:25,209 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_spec3_product32.cil.c[3233,3246] [2023-04-02 23:54:25,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:54:25,330 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:54:25,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25 WrapperNode [2023-04-02 23:54:25,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:54:25,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:54:25,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:54:25,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:54:25,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:54:25,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:54:25,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:54:25,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:54:25,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (1/1) ... [2023-04-02 23:54:25,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:54:25,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:25,514 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 23:54:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:54:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:54:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:54:25,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:54:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:54:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:54:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:54:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:54:25,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:54:25,544 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 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:54:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:54:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:54:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:54:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:54:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:54:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:54:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:54:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:54:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:54:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:54:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:54:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:54:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:54:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:54:25,805 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:54:25,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:54:26,718 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:54:27,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:54:27,288 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:54:27,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:54:27 BoogieIcfgContainer [2023-04-02 23:54:27,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:54:27,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:54:27,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:54:27,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:54:27,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:54:24" (1/3) ... [2023-04-02 23:54:27,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:54:27, skipping insertion in model container [2023-04-02 23:54:27,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:54:25" (2/3) ... [2023-04-02 23:54:27,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56a0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:54:27, skipping insertion in model container [2023-04-02 23:54:27,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:54:27" (3/3) ... [2023-04-02 23:54:27,301 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2023-04-02 23:54:27,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:54:27,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:54:27,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:54:27,363 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;@2fd2f717, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:54:27,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:54:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 642 states, 374 states have (on average 1.4598930481283423) internal successors, (546), 399 states have internal predecessors, (546), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 189 states have call predecessors, (196), 196 states have call successors, (196) [2023-04-02 23:54:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 23:54:27,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:27,376 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:54:27,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:27,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1920679424, now seen corresponding path program 1 times [2023-04-02 23:54:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128710677] [2023-04-02 23:54:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:54:28,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128710677] [2023-04-02 23:54:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128710677] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545712214] [2023-04-02 23:54:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:28,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:28,244 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 23:54:28,275 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 23:54:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:28,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:54:28,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:54:28,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:54:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545712214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:54:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-02 23:54:28,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736469006] [2023-04-02 23:54:28,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:28,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:54:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:54:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:28,780 INFO L87 Difference]: Start difference. First operand has 642 states, 374 states have (on average 1.4598930481283423) internal successors, (546), 399 states have internal predecessors, (546), 196 states have call successors, (196), 58 states have call predecessors, (196), 58 states have return successors, (196), 189 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:54:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:29,066 INFO L93 Difference]: Finished difference Result 1430 states and 2148 transitions. [2023-04-02 23:54:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:54:29,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 81 [2023-04-02 23:54:29,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:29,086 INFO L225 Difference]: With dead ends: 1430 [2023-04-02 23:54:29,086 INFO L226 Difference]: Without dead ends: 926 [2023-04-02 23:54:29,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:29,096 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 632 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:29,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1482 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:54:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-04-02 23:54:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 913. [2023-04-02 23:54:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 576 states have (on average 1.4965277777777777) internal successors, (862), 611 states have internal predecessors, (862), 245 states have call successors, (245), 93 states have call predecessors, (245), 91 states have return successors, (247), 234 states have call predecessors, (247), 239 states have call successors, (247) [2023-04-02 23:54:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1354 transitions. [2023-04-02 23:54:29,188 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1354 transitions. Word has length 81 [2023-04-02 23:54:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:29,189 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1354 transitions. [2023-04-02 23:54:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:54:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1354 transitions. [2023-04-02 23:54:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 23:54:29,192 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:29,192 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:54:29,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:54:29,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 23:54:29,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:29,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2081336420, now seen corresponding path program 1 times [2023-04-02 23:54:29,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:29,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776946972] [2023-04-02 23:54:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:54:29,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776946972] [2023-04-02 23:54:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776946972] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331817774] [2023-04-02 23:54:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:29,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:29,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:29,836 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 23:54:29,838 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 23:54:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:30,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:54:30,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:54:30,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:54:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331817774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:54:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-02 23:54:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818224847] [2023-04-02 23:54:30,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:54:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:54:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:30,336 INFO L87 Difference]: Start difference. First operand 913 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 23:54:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:30,520 INFO L93 Difference]: Finished difference Result 2217 states and 3334 transitions. [2023-04-02 23:54:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:54:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 80 [2023-04-02 23:54:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:30,528 INFO L225 Difference]: With dead ends: 2217 [2023-04-02 23:54:30,528 INFO L226 Difference]: Without dead ends: 1335 [2023-04-02 23:54:30,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:30,532 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 701 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:30,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1343 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:54:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2023-04-02 23:54:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1305. [2023-04-02 23:54:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 830 states have (on average 1.5036144578313253) internal successors, (1248), 882 states have internal predecessors, (1248), 346 states have call successors, (346), 128 states have call predecessors, (346), 128 states have return successors, (355), 333 states have call predecessors, (355), 340 states have call successors, (355) [2023-04-02 23:54:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1949 transitions. [2023-04-02 23:54:30,588 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1949 transitions. Word has length 80 [2023-04-02 23:54:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:30,588 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1949 transitions. [2023-04-02 23:54:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 23:54:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1949 transitions. [2023-04-02 23:54:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 23:54:30,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:30,591 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:54:30,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 23:54:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 23:54:30,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:30,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash -505777772, now seen corresponding path program 1 times [2023-04-02 23:54:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541374429] [2023-04-02 23:54:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:54:31,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541374429] [2023-04-02 23:54:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541374429] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:31,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:54:31,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:54:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494511634] [2023-04-02 23:54:31,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:31,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:54:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:54:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:54:31,157 INFO L87 Difference]: Start difference. First operand 1305 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:54:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:31,402 INFO L93 Difference]: Finished difference Result 3832 states and 5804 transitions. [2023-04-02 23:54:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:54:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 81 [2023-04-02 23:54:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:31,416 INFO L225 Difference]: With dead ends: 3832 [2023-04-02 23:54:31,417 INFO L226 Difference]: Without dead ends: 2558 [2023-04-02 23:54:31,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:54:31,423 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 700 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1409 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:54:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2023-04-02 23:54:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2411. [2023-04-02 23:54:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1589 states have (on average 1.524229074889868) internal successors, (2422), 1670 states have internal predecessors, (2422), 601 states have call successors, (601), 216 states have call predecessors, (601), 220 states have return successors, (646), 563 states have call predecessors, (646), 594 states have call successors, (646) [2023-04-02 23:54:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3669 transitions. [2023-04-02 23:54:31,527 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3669 transitions. Word has length 81 [2023-04-02 23:54:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:31,527 INFO L495 AbstractCegarLoop]: Abstraction has 2411 states and 3669 transitions. [2023-04-02 23:54:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:54:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3669 transitions. [2023-04-02 23:54:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 23:54:31,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:31,534 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:54:31,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:54:31,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:31,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash -734815546, now seen corresponding path program 1 times [2023-04-02 23:54:31,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:31,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770038486] [2023-04-02 23:54:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:31,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:54:31,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:31,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770038486] [2023-04-02 23:54:31,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770038486] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:54:31,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:54:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252280900] [2023-04-02 23:54:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:54:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:54:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:54:31,934 INFO L87 Difference]: Start difference. First operand 2411 states and 3669 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-02 23:54:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:33,512 INFO L93 Difference]: Finished difference Result 7216 states and 11257 transitions. [2023-04-02 23:54:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 23:54:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 129 [2023-04-02 23:54:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:33,542 INFO L225 Difference]: With dead ends: 7216 [2023-04-02 23:54:33,542 INFO L226 Difference]: Without dead ends: 4836 [2023-04-02 23:54:33,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-02 23:54:33,554 INFO L413 NwaCegarLoop]: 1426 mSDtfsCounter, 1390 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:33,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 5564 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 23:54:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2023-04-02 23:54:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4748. [2023-04-02 23:54:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4748 states, 3124 states have (on average 1.5153649167733674) internal successors, (4734), 3308 states have internal predecessors, (4734), 1186 states have call successors, (1186), 425 states have call predecessors, (1186), 437 states have return successors, (1400), 1095 states have call predecessors, (1400), 1177 states have call successors, (1400) [2023-04-02 23:54:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 7320 transitions. [2023-04-02 23:54:33,777 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 7320 transitions. Word has length 129 [2023-04-02 23:54:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:33,777 INFO L495 AbstractCegarLoop]: Abstraction has 4748 states and 7320 transitions. [2023-04-02 23:54:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-02 23:54:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 7320 transitions. [2023-04-02 23:54:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 23:54:33,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:33,784 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-02 23:54:33,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:54:33,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:33,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1552939625, now seen corresponding path program 1 times [2023-04-02 23:54:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794896701] [2023-04-02 23:54:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:54:34,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794896701] [2023-04-02 23:54:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794896701] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626663298] [2023-04-02 23:54:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:34,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:54:34,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:54:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:34,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:54:34,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:54:34,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:54:34,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626663298] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:34,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:54:34,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-02 23:54:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412721425] [2023-04-02 23:54:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:54:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:54:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:54:34,611 INFO L87 Difference]: Start difference. First operand 4748 states and 7320 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:54:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:34,848 INFO L93 Difference]: Finished difference Result 9306 states and 14478 transitions. [2023-04-02 23:54:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:54:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 131 [2023-04-02 23:54:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:34,873 INFO L225 Difference]: With dead ends: 9306 [2023-04-02 23:54:34,873 INFO L226 Difference]: Without dead ends: 4589 [2023-04-02 23:54:34,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:54:34,893 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 21 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:34,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1388 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:54:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2023-04-02 23:54:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4565. [2023-04-02 23:54:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 3004 states have (on average 1.5076564580559255) internal successors, (4529), 3179 states have internal predecessors, (4529), 1140 states have call successors, (1140), 410 states have call predecessors, (1140), 420 states have return successors, (1335), 1054 states have call predecessors, (1335), 1131 states have call successors, (1335) [2023-04-02 23:54:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 7004 transitions. [2023-04-02 23:54:35,055 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 7004 transitions. Word has length 131 [2023-04-02 23:54:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:35,055 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 7004 transitions. [2023-04-02 23:54:35,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:54:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 7004 transitions. [2023-04-02 23:54:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-02 23:54:35,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:35,060 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-02 23:54:35,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 23:54:35,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:35,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:35,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1608261486, now seen corresponding path program 1 times [2023-04-02 23:54:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499812623] [2023-04-02 23:54:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:54:35,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499812623] [2023-04-02 23:54:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499812623] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605967857] [2023-04-02 23:54:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:35,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:35,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:35,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:54:35,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:54:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:36,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 23:54:36,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:54:36,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:54:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605967857] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:54:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-04-02 23:54:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363143294] [2023-04-02 23:54:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:54:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:54:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:54:36,292 INFO L87 Difference]: Start difference. First operand 4565 states and 7004 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:54:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:37,190 INFO L93 Difference]: Finished difference Result 12322 states and 19361 transitions. [2023-04-02 23:54:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:54:37,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 130 [2023-04-02 23:54:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:37,236 INFO L225 Difference]: With dead ends: 12322 [2023-04-02 23:54:37,236 INFO L226 Difference]: Without dead ends: 7788 [2023-04-02 23:54:37,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:54:37,262 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 603 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:37,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2242 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 23:54:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2023-04-02 23:54:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7745. [2023-04-02 23:54:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 5073 states have (on average 1.4533806426177804) internal successors, (7373), 5368 states have internal predecessors, (7373), 1926 states have call successors, (1926), 733 states have call predecessors, (1926), 745 states have return successors, (2432), 1772 states have call predecessors, (2432), 1913 states have call successors, (2432) [2023-04-02 23:54:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 11731 transitions. [2023-04-02 23:54:37,605 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 11731 transitions. Word has length 130 [2023-04-02 23:54:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:37,605 INFO L495 AbstractCegarLoop]: Abstraction has 7745 states and 11731 transitions. [2023-04-02 23:54:37,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:54:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 11731 transitions. [2023-04-02 23:54:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 23:54:37,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:37,608 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:54:37,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 23:54:37,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:37,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:37,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1721177774, now seen corresponding path program 1 times [2023-04-02 23:54:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165783394] [2023-04-02 23:54:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:54:38,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165783394] [2023-04-02 23:54:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165783394] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127078903] [2023-04-02 23:54:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:38,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:38,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:38,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:54:38,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:54:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:38,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:54:38,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:54:38,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:54:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127078903] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:54:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-02 23:54:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591993828] [2023-04-02 23:54:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:54:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:54:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:38,745 INFO L87 Difference]: Start difference. First operand 7745 states and 11731 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:54:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:39,172 INFO L93 Difference]: Finished difference Result 17260 states and 26345 transitions. [2023-04-02 23:54:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:54:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 129 [2023-04-02 23:54:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:39,235 INFO L225 Difference]: With dead ends: 17260 [2023-04-02 23:54:39,235 INFO L226 Difference]: Without dead ends: 9546 [2023-04-02 23:54:39,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:54:39,271 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 659 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:39,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1405 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:54:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-04-02 23:54:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 7597. [2023-04-02 23:54:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7597 states, 4977 states have (on average 1.4546915812738597) internal successors, (7240), 5272 states have internal predecessors, (7240), 1898 states have call successors, (1898), 717 states have call predecessors, (1898), 721 states have return successors, (2319), 1736 states have call predecessors, (2319), 1885 states have call successors, (2319) [2023-04-02 23:54:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 11457 transitions. [2023-04-02 23:54:39,608 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 11457 transitions. Word has length 129 [2023-04-02 23:54:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:39,608 INFO L495 AbstractCegarLoop]: Abstraction has 7597 states and 11457 transitions. [2023-04-02 23:54:39,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:54:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 11457 transitions. [2023-04-02 23:54:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 23:54:39,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:39,611 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-02 23:54:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 23:54:39,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:39,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:39,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1489408649, now seen corresponding path program 1 times [2023-04-02 23:54:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306953463] [2023-04-02 23:54:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 23:54:40,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306953463] [2023-04-02 23:54:40,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306953463] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:54:40,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:54:40,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:54:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026835382] [2023-04-02 23:54:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:54:40,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:54:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:54:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:54:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:54:40,312 INFO L87 Difference]: Start difference. First operand 7597 states and 11457 transitions. Second operand has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 23:54:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:54:42,320 INFO L93 Difference]: Finished difference Result 24473 states and 38248 transitions. [2023-04-02 23:54:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 23:54:42,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 135 [2023-04-02 23:54:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:54:42,402 INFO L225 Difference]: With dead ends: 24473 [2023-04-02 23:54:42,403 INFO L226 Difference]: Without dead ends: 16907 [2023-04-02 23:54:42,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-04-02 23:54:42,434 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 1392 mSDsluCounter, 8558 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 9967 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:54:42,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 9967 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 23:54:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2023-04-02 23:54:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 16576. [2023-04-02 23:54:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16576 states, 11011 states have (on average 1.456815911361366) internal successors, (16041), 11641 states have internal predecessors, (16041), 4024 states have call successors, (4024), 1525 states have call predecessors, (4024), 1540 states have return successors, (5539), 3646 states have call predecessors, (5539), 4003 states have call successors, (5539) [2023-04-02 23:54:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16576 states to 16576 states and 25604 transitions. [2023-04-02 23:54:43,178 INFO L78 Accepts]: Start accepts. Automaton has 16576 states and 25604 transitions. Word has length 135 [2023-04-02 23:54:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:54:43,178 INFO L495 AbstractCegarLoop]: Abstraction has 16576 states and 25604 transitions. [2023-04-02 23:54:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 23:54:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 16576 states and 25604 transitions. [2023-04-02 23:54:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 23:54:43,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:54:43,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-02 23:54:43,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:54:43,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:54:43,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:54:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1913415554, now seen corresponding path program 1 times [2023-04-02 23:54:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:54:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36479897] [2023-04-02 23:54:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:54:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:54:43,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:54:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36479897] [2023-04-02 23:54:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36479897] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:54:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987248059] [2023-04-02 23:54:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:54:43,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:54:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:54:43,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:54:43,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 23:54:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:54:43,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 23:54:43,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:54:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:54:44,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:54:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:54:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987248059] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:54:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26161739] [2023-04-02 23:54:44,657 INFO L159 IcfgInterpreter]: Started Sifa with 126 locations of interest [2023-04-02 23:54:44,657 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:54:44,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:54:44,664 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:54:44,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:54:46,445 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 178 for LOIs [2023-04-02 23:54:46,839 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 230 for LOIs [2023-04-02 23:54:48,974 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 230 for LOIs [2023-04-02 23:54:49,318 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 230 for LOIs [2023-04-02 23:54:53,635 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...