/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:43:55,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:43:55,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:43:55,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:43:55,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:43:55,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:43:55,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:43:55,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:43:55,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:43:55,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:43:55,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:43:55,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:43:55,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:43:55,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:43:55,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:43:55,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:43:55,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:43:55,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:43:55,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:43:55,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:43:55,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:43:55,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:43:55,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:43:55,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:43:55,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:43:55,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:43:55,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:43:55,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:43:55,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:43:55,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:43:55,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:43:55,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:43:55,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:43:55,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:43:55,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:43:55,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:43:55,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:43:55,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:43:55,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:43:55,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:43:55,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:43:55,374 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 23:43:55,402 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:43:55,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:43:55,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:43:55,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:43:55,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:43:55,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:43:55,404 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:43:55,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:43:55,404 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:43:55,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:43:55,405 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:43:55,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:43:55,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:43:55,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:43:55,405 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:43:55,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:43:55,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:43:55,406 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:43:55,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:43:55,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:43:55,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:43:55,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:43:55,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:43:55,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:43:55,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:43:55,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:43:55,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:43:55,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:43:55,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:43:55,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:43:55,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:43:55,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:43:55,650 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:43:55,650 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:43:55,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2023-04-02 23:43:56,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:43:57,075 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:43:57,076 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2023-04-02 23:43:57,104 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef33c0fc/b3356884e1cc4bcbbf83f323e1d13933/FLAGf681a9780 [2023-04-02 23:43:57,120 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef33c0fc/b3356884e1cc4bcbbf83f323e1d13933 [2023-04-02 23:43:57,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:43:57,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:43:57,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:43:57,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:43:57,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:43:57,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2c7f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57, skipping insertion in model container [2023-04-02 23:43:57,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:43:57,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:43:57,538 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2023-04-02 23:43:57,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:43:57,642 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:43:57,704 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2023-04-02 23:43:57,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:43:57,765 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:43:57,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57 WrapperNode [2023-04-02 23:43:57,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:43:57,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:43:57,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:43:57,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:43:57,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:43:57,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:43:57,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:43:57,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:43:57,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (1/1) ... [2023-04-02 23:43:57,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:43:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:57,943 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 23:43:57,967 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 23:43:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:43:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:43:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:43:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:43:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:43:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:43:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:43:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:43:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:43:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:43:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:43:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:43:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:43:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:43:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:43:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:43:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:43:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:43:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:43:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:43:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:43:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:43:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:43:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:43:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:43:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:43:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:43:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:43:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:43:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:43:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:43:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:43:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:43:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:43:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:43:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:43:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:43:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:43:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:43:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:43:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:43:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:43:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:43:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:43:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:43:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:43:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:43:58,324 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:43:58,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:43:59,574 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:44:00,372 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:44:00,373 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:44:00,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:44:00 BoogieIcfgContainer [2023-04-02 23:44:00,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:44:00,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:44:00,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:44:00,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:44:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:43:57" (1/3) ... [2023-04-02 23:44:00,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ec83b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:44:00, skipping insertion in model container [2023-04-02 23:44:00,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:57" (2/3) ... [2023-04-02 23:44:00,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ec83b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:44:00, skipping insertion in model container [2023-04-02 23:44:00,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:44:00" (3/3) ... [2023-04-02 23:44:00,386 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2023-04-02 23:44:00,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:44:00,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:44:00,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:44:00,475 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;@45d67c0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:44:00,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:44:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 336 states have (on average 1.4851190476190477) internal successors, (499), 363 states have internal predecessors, (499), 176 states have call successors, (176), 52 states have call predecessors, (176), 52 states have return successors, (176), 167 states have call predecessors, (176), 176 states have call successors, (176) [2023-04-02 23:44:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 23:44:00,512 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:00,514 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:00,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:00,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 522126886, now seen corresponding path program 1 times [2023-04-02 23:44:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:00,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555757077] [2023-04-02 23:44:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:00,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:44:01,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:01,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555757077] [2023-04-02 23:44:01,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555757077] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:44:01,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:44:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 23:44:01,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589289913] [2023-04-02 23:44:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:44:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 23:44:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:44:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 23:44:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:44:01,137 INFO L87 Difference]: Start difference. First operand has 577 states, 336 states have (on average 1.4851190476190477) internal successors, (499), 363 states have internal predecessors, (499), 176 states have call successors, (176), 52 states have call predecessors, (176), 52 states have return successors, (176), 167 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-02 23:44:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:44:01,299 INFO L93 Difference]: Finished difference Result 486 states and 719 transitions. [2023-04-02 23:44:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 23:44:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 135 [2023-04-02 23:44:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:44:01,322 INFO L225 Difference]: With dead ends: 486 [2023-04-02 23:44:01,322 INFO L226 Difference]: Without dead ends: 452 [2023-04-02 23:44:01,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:44:01,328 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:44:01,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:44:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-04-02 23:44:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2023-04-02 23:44:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 283 states have (on average 1.519434628975265) internal successors, (430), 302 states have internal predecessors, (430), 123 states have call successors, (123), 49 states have call predecessors, (123), 45 states have return successors, (115), 112 states have call predecessors, (115), 115 states have call successors, (115) [2023-04-02 23:44:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 668 transitions. [2023-04-02 23:44:01,427 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 668 transitions. Word has length 135 [2023-04-02 23:44:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:44:01,429 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 668 transitions. [2023-04-02 23:44:01,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-02 23:44:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 668 transitions. [2023-04-02 23:44:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 23:44:01,433 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:01,433 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:01,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:44:01,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:01,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:01,434 INFO L85 PathProgramCache]: Analyzing trace with hash 408610067, now seen corresponding path program 1 times [2023-04-02 23:44:01,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:01,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394015867] [2023-04-02 23:44:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:01,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:44:02,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:02,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394015867] [2023-04-02 23:44:02,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394015867] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:44:02,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:44:02,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:44:02,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338607343] [2023-04-02 23:44:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:44:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:44:02,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:44:02,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:44:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:44:02,262 INFO L87 Difference]: Start difference. First operand 452 states and 668 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 23:44:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:44:04,660 INFO L93 Difference]: Finished difference Result 1261 states and 1915 transitions. [2023-04-02 23:44:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:44:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 136 [2023-04-02 23:44:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:44:04,667 INFO L225 Difference]: With dead ends: 1261 [2023-04-02 23:44:04,667 INFO L226 Difference]: Without dead ends: 862 [2023-04-02 23:44:04,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:44:04,671 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1234 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:44:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 504 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 23:44:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-04-02 23:44:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 837. [2023-04-02 23:44:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 538 states have (on average 1.5390334572490707) internal successors, (828), 571 states have internal predecessors, (828), 220 states have call successors, (220), 81 states have call predecessors, (220), 78 states have return successors, (218), 208 states have call predecessors, (218), 212 states have call successors, (218) [2023-04-02 23:44:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1266 transitions. [2023-04-02 23:44:04,750 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1266 transitions. Word has length 136 [2023-04-02 23:44:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:44:04,751 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1266 transitions. [2023-04-02 23:44:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 23:44:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1266 transitions. [2023-04-02 23:44:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 23:44:04,754 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:04,754 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:44:04,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:04,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1774907341, now seen corresponding path program 1 times [2023-04-02 23:44:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009542700] [2023-04-02 23:44:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:44:05,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:05,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009542700] [2023-04-02 23:44:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009542700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:44:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:44:05,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:44:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326572394] [2023-04-02 23:44:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:44:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:44:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:44:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:44:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:44:05,168 INFO L87 Difference]: Start difference. First operand 837 states and 1266 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:44:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:44:05,773 INFO L93 Difference]: Finished difference Result 876 states and 1322 transitions. [2023-04-02 23:44:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:44:05,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2023-04-02 23:44:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:44:05,782 INFO L225 Difference]: With dead ends: 876 [2023-04-02 23:44:05,782 INFO L226 Difference]: Without dead ends: 859 [2023-04-02 23:44:05,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:44:05,787 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 685 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:44:05,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2030 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:44:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-04-02 23:44:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 841. [2023-04-02 23:44:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 542 states have (on average 1.5350553505535056) internal successors, (832), 575 states have internal predecessors, (832), 220 states have call successors, (220), 81 states have call predecessors, (220), 78 states have return successors, (218), 208 states have call predecessors, (218), 212 states have call successors, (218) [2023-04-02 23:44:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1270 transitions. [2023-04-02 23:44:05,850 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1270 transitions. Word has length 140 [2023-04-02 23:44:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:44:05,852 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1270 transitions. [2023-04-02 23:44:05,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:44:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1270 transitions. [2023-04-02 23:44:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:44:05,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:05,858 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:05,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:44:05,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:05,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 382317064, now seen corresponding path program 1 times [2023-04-02 23:44:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:05,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832646963] [2023-04-02 23:44:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:05,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:44:06,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:06,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832646963] [2023-04-02 23:44:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832646963] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:44:06,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:44:06,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:44:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919983427] [2023-04-02 23:44:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:44:06,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:44:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:44:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:44:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:44:06,310 INFO L87 Difference]: Start difference. First operand 841 states and 1270 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:44:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:44:06,516 INFO L93 Difference]: Finished difference Result 862 states and 1296 transitions. [2023-04-02 23:44:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:44:06,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) Word has length 145 [2023-04-02 23:44:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:44:06,521 INFO L225 Difference]: With dead ends: 862 [2023-04-02 23:44:06,522 INFO L226 Difference]: Without dead ends: 845 [2023-04-02 23:44:06,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:44:06,523 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 10 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:44:06,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4377 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:44:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-04-02 23:44:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 841. [2023-04-02 23:44:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 542 states have (on average 1.5313653136531364) internal successors, (830), 575 states have internal predecessors, (830), 220 states have call successors, (220), 81 states have call predecessors, (220), 78 states have return successors, (218), 208 states have call predecessors, (218), 212 states have call successors, (218) [2023-04-02 23:44:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1268 transitions. [2023-04-02 23:44:06,572 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1268 transitions. Word has length 145 [2023-04-02 23:44:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:44:06,575 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1268 transitions. [2023-04-02 23:44:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:44:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1268 transitions. [2023-04-02 23:44:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:44:06,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:06,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:06,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:44:06,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:06,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -247413462, now seen corresponding path program 1 times [2023-04-02 23:44:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:06,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049703202] [2023-04-02 23:44:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 23:44:09,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049703202] [2023-04-02 23:44:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049703202] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:44:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603830092] [2023-04-02 23:44:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:44:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:44:09,917 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 23:44:09,942 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 23:44:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:10,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 23:44:10,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:44:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:44:10,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:44:10,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603830092] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:44:10,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:44:10,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 27 [2023-04-02 23:44:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050597275] [2023-04-02 23:44:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:44:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:44:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:44:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:44:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2023-04-02 23:44:10,675 INFO L87 Difference]: Start difference. First operand 841 states and 1268 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) [2023-04-02 23:44:10,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:44:10,883 INFO L93 Difference]: Finished difference Result 884 states and 1322 transitions. [2023-04-02 23:44:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:44:10,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) Word has length 160 [2023-04-02 23:44:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:44:10,890 INFO L225 Difference]: With dead ends: 884 [2023-04-02 23:44:10,891 INFO L226 Difference]: Without dead ends: 867 [2023-04-02 23:44:10,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 23:44:10,893 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 8 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:44:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3802 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:44:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-04-02 23:44:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 853. [2023-04-02 23:44:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 550 states have (on average 1.5236363636363637) internal successors, (838), 583 states have internal predecessors, (838), 220 states have call successors, (220), 81 states have call predecessors, (220), 82 states have return successors, (222), 212 states have call predecessors, (222), 212 states have call successors, (222) [2023-04-02 23:44:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1280 transitions. [2023-04-02 23:44:10,942 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1280 transitions. Word has length 160 [2023-04-02 23:44:10,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:44:10,942 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1280 transitions. [2023-04-02 23:44:10,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) [2023-04-02 23:44:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1280 transitions. [2023-04-02 23:44:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-04-02 23:44:10,946 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:44:10,946 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:44:10,957 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 23:44:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:44:11,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:44:11,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:44:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1159627942, now seen corresponding path program 1 times [2023-04-02 23:44:11,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:44:11,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482162026] [2023-04-02 23:44:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:44:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 23:44:13,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:44:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482162026] [2023-04-02 23:44:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482162026] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:44:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001155736] [2023-04-02 23:44:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:44:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:44:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:44:13,364 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 23:44:13,367 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 23:44:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:44:13,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 3045 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 23:44:13,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:44:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 23:44:14,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:44:56,138 WARN L223 SmtUtils]: Spent 40.79s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:45:39,036 WARN L223 SmtUtils]: Spent 40.10s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:46:20,374 WARN L223 SmtUtils]: Spent 40.76s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:47:01,777 WARN L223 SmtUtils]: Spent 40.75s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:47:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-02 23:47:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001155736] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:47:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777760395] [2023-04-02 23:47:02,452 INFO L159 IcfgInterpreter]: Started Sifa with 152 locations of interest [2023-04-02 23:47:02,452 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:47:02,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:47:02,461 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:47:02,461 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:47:04,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2023-04-02 23:47:05,208 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 242 for LOIs [2023-04-02 23:47:07,890 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 242 for LOIs [2023-04-02 23:47:12,054 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...