/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:10:32,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:10:32,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:10:32,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:10:32,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:10:32,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:10:32,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:10:32,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:10:32,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:10:32,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:10:32,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:10:32,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:10:32,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:10:32,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:10:32,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:10:32,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:10:32,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:10:32,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:10:32,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:10:32,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:10:32,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:10:32,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:10:32,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:10:32,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:10:32,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:10:32,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:10:32,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:10:32,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:10:32,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:10:32,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:10:32,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:10:32,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:10:32,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:10:32,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:10:32,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:10:32,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:10:32,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:10:32,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:10:32,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:10:32,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:10:32,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:10:32,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:10:32,935 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:10:32,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:10:32,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:10:32,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:10:32,937 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:10:32,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:10:32,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:10:32,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:10:32,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:10:32,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:10:32,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:10:32,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:10:32,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:10:32,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:10:32,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:10:32,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:10:32,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:32,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:10:32,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:10:32,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:10:32,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:10:32,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:10:32,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:10:32,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:10:33,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:10:33,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:10:33,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:10:33,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:10:33,281 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:10:33,282 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-11-07 04:10:33,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f24909d/2a5fd035983241b882cf1c915ebd9079/FLAG220811c6e [2019-11-07 04:10:34,071 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:10:34,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-11-07 04:10:34,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f24909d/2a5fd035983241b882cf1c915ebd9079/FLAG220811c6e [2019-11-07 04:10:34,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f24909d/2a5fd035983241b882cf1c915ebd9079 [2019-11-07 04:10:34,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:10:34,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:10:34,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:34,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:10:34,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:10:34,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:34" (1/1) ... [2019-11-07 04:10:34,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42ad2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:34, skipping insertion in model container [2019-11-07 04:10:34,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:34" (1/1) ... [2019-11-07 04:10:34,302 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:10:34,392 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:10:35,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:35,147 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:10:35,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:35,378 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:10:35,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35 WrapperNode [2019-11-07 04:10:35,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:35,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:10:35,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:10:35,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:10:35,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... [2019-11-07 04:10:35,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:35,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:35,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:35,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:35,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:35,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:35,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:35,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:35,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:35,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:35,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:10:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:10:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:10:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:10:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:35,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:35,677 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:35,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:10:35,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:10:35,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:35,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:10:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:10:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:10:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:10:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:40,633 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:40,634 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:40,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:40 BoogieIcfgContainer [2019-11-07 04:10:40,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:40,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:40,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:40,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:40,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:34" (1/3) ... [2019-11-07 04:10:40,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:40, skipping insertion in model container [2019-11-07 04:10:40,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:35" (2/3) ... [2019-11-07 04:10:40,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:40, skipping insertion in model container [2019-11-07 04:10:40,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:40" (3/3) ... [2019-11-07 04:10:40,647 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2019-11-07 04:10:40,657 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:40,669 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:40,681 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:40,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:40,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:40,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:40,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:40,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:40,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:40,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:40,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-11-07 04:10:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:10:40,804 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:40,806 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:40,808 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:40,813 INFO L82 PathProgramCache]: Analyzing trace with hash -116246569, now seen corresponding path program 1 times [2019-11-07 04:10:40,820 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:40,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118202524] [2019-11-07 04:10:40,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:41,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118202524] [2019-11-07 04:10:41,446 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:41,446 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:41,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983348717] [2019-11-07 04:10:41,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:41,454 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:41,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:41,471 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-11-07 04:10:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:41,590 INFO L93 Difference]: Finished difference Result 497 states and 735 transitions. [2019-11-07 04:10:41,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:41,594 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-11-07 04:10:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:41,633 INFO L225 Difference]: With dead ends: 497 [2019-11-07 04:10:41,633 INFO L226 Difference]: Without dead ends: 463 [2019-11-07 04:10:41,638 INFO L630 BasicCegarLoop]: 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 [2019-11-07 04:10:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-11-07 04:10:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2019-11-07 04:10:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-11-07 04:10:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 684 transitions. [2019-11-07 04:10:41,728 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 684 transitions. Word has length 112 [2019-11-07 04:10:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:41,731 INFO L462 AbstractCegarLoop]: Abstraction has 463 states and 684 transitions. [2019-11-07 04:10:41,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 684 transitions. [2019-11-07 04:10:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:10:41,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:41,740 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:41,740 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash -207245627, now seen corresponding path program 1 times [2019-11-07 04:10:41,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:41,741 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992975321] [2019-11-07 04:10:41,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:42,057 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992975321] [2019-11-07 04:10:42,058 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:42,058 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:42,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686770273] [2019-11-07 04:10:42,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:42,060 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:42,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:42,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:42,061 INFO L87 Difference]: Start difference. First operand 463 states and 684 transitions. Second operand 7 states. [2019-11-07 04:10:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:46,176 INFO L93 Difference]: Finished difference Result 1316 states and 1989 transitions. [2019-11-07 04:10:46,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:10:46,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:10:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:46,184 INFO L225 Difference]: With dead ends: 1316 [2019-11-07 04:10:46,184 INFO L226 Difference]: Without dead ends: 895 [2019-11-07 04:10:46,190 INFO L630 BasicCegarLoop]: 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 [2019-11-07 04:10:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-11-07 04:10:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 870. [2019-11-07 04:10:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2019-11-07 04:10:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1311 transitions. [2019-11-07 04:10:46,294 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1311 transitions. Word has length 113 [2019-11-07 04:10:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:46,296 INFO L462 AbstractCegarLoop]: Abstraction has 870 states and 1311 transitions. [2019-11-07 04:10:46,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1311 transitions. [2019-11-07 04:10:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:10:46,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:46,305 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:46,305 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2005734008, now seen corresponding path program 1 times [2019-11-07 04:10:46,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:46,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022724187] [2019-11-07 04:10:46,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:46,617 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022724187] [2019-11-07 04:10:46,617 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:46,617 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:46,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239527745] [2019-11-07 04:10:46,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:46,620 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:46,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:46,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:46,621 INFO L87 Difference]: Start difference. First operand 870 states and 1311 transitions. Second operand 4 states. [2019-11-07 04:10:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:48,630 INFO L93 Difference]: Finished difference Result 2594 states and 4006 transitions. [2019-11-07 04:10:48,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:48,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-11-07 04:10:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:48,651 INFO L225 Difference]: With dead ends: 2594 [2019-11-07 04:10:48,651 INFO L226 Difference]: Without dead ends: 1766 [2019-11-07 04:10:48,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-11-07 04:10:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1668. [2019-11-07 04:10:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2019-11-07 04:10:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2561 transitions. [2019-11-07 04:10:48,855 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2561 transitions. Word has length 117 [2019-11-07 04:10:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:48,856 INFO L462 AbstractCegarLoop]: Abstraction has 1668 states and 2561 transitions. [2019-11-07 04:10:48,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2561 transitions. [2019-11-07 04:10:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:10:48,863 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:48,863 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:48,864 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:48,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2049808782, now seen corresponding path program 1 times [2019-11-07 04:10:48,865 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:48,865 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140508953] [2019-11-07 04:10:48,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:49,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140508953] [2019-11-07 04:10:49,169 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:49,169 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:49,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094202417] [2019-11-07 04:10:49,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:49,171 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:49,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:49,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:49,172 INFO L87 Difference]: Start difference. First operand 1668 states and 2561 transitions. Second operand 4 states. [2019-11-07 04:10:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:51,367 INFO L93 Difference]: Finished difference Result 4935 states and 7738 transitions. [2019-11-07 04:10:51,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:51,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-07 04:10:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:51,400 INFO L225 Difference]: With dead ends: 4935 [2019-11-07 04:10:51,400 INFO L226 Difference]: Without dead ends: 3310 [2019-11-07 04:10:51,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-11-07 04:10:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3189. [2019-11-07 04:10:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2019-11-07 04:10:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4962 transitions. [2019-11-07 04:10:51,616 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4962 transitions. Word has length 118 [2019-11-07 04:10:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:51,617 INFO L462 AbstractCegarLoop]: Abstraction has 3189 states and 4962 transitions. [2019-11-07 04:10:51,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4962 transitions. [2019-11-07 04:10:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:10:51,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:51,623 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:51,623 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 878844426, now seen corresponding path program 1 times [2019-11-07 04:10:51,624 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:51,624 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637522601] [2019-11-07 04:10:51,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:51,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637522601] [2019-11-07 04:10:51,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:51,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:51,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868596588] [2019-11-07 04:10:51,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:51,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:51,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:51,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:51,913 INFO L87 Difference]: Start difference. First operand 3189 states and 4962 transitions. Second operand 4 states. [2019-11-07 04:10:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:53,951 INFO L93 Difference]: Finished difference Result 9550 states and 15278 transitions. [2019-11-07 04:10:53,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:53,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:10:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:53,999 INFO L225 Difference]: With dead ends: 9550 [2019-11-07 04:10:53,999 INFO L226 Difference]: Without dead ends: 6406 [2019-11-07 04:10:54,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2019-11-07 04:10:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6240. [2019-11-07 04:10:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6240 states. [2019-11-07 04:10:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 9880 transitions. [2019-11-07 04:10:54,436 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 9880 transitions. Word has length 119 [2019-11-07 04:10:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:54,441 INFO L462 AbstractCegarLoop]: Abstraction has 6240 states and 9880 transitions. [2019-11-07 04:10:54,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 9880 transitions. [2019-11-07 04:10:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:10:54,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:54,449 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:54,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:54,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1472784564, now seen corresponding path program 1 times [2019-11-07 04:10:54,450 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:54,450 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410164987] [2019-11-07 04:10:54,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:54,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410164987] [2019-11-07 04:10:54,630 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:54,630 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:54,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620373397] [2019-11-07 04:10:54,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:54,632 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:54,633 INFO L87 Difference]: Start difference. First operand 6240 states and 9880 transitions. Second operand 4 states. [2019-11-07 04:10:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:56,796 INFO L93 Difference]: Finished difference Result 18805 states and 31089 transitions. [2019-11-07 04:10:56,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:56,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:10:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:56,903 INFO L225 Difference]: With dead ends: 18805 [2019-11-07 04:10:56,903 INFO L226 Difference]: Without dead ends: 12614 [2019-11-07 04:10:56,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2019-11-07 04:10:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12359. [2019-11-07 04:10:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12359 states. [2019-11-07 04:10:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12359 states to 12359 states and 20126 transitions. [2019-11-07 04:10:57,732 INFO L78 Accepts]: Start accepts. Automaton has 12359 states and 20126 transitions. Word has length 120 [2019-11-07 04:10:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:57,732 INFO L462 AbstractCegarLoop]: Abstraction has 12359 states and 20126 transitions. [2019-11-07 04:10:57,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12359 states and 20126 transitions. [2019-11-07 04:10:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:10:57,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:57,736 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:57,737 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1589903732, now seen corresponding path program 1 times [2019-11-07 04:10:57,737 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:57,738 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570698512] [2019-11-07 04:10:57,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:57,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570698512] [2019-11-07 04:10:57,887 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:57,888 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:57,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401956429] [2019-11-07 04:10:57,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:57,889 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:57,889 INFO L87 Difference]: Start difference. First operand 12359 states and 20126 transitions. Second operand 4 states. [2019-11-07 04:11:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:01,029 INFO L93 Difference]: Finished difference Result 37392 states and 65353 transitions. [2019-11-07 04:11:01,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:11:01,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:11:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:01,249 INFO L225 Difference]: With dead ends: 37392 [2019-11-07 04:11:01,249 INFO L226 Difference]: Without dead ends: 25078 [2019-11-07 04:11:01,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25078 states. [2019-11-07 04:11:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25078 to 24496. [2019-11-07 04:11:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24496 states. [2019-11-07 04:11:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24496 states to 24496 states and 41521 transitions. [2019-11-07 04:11:03,035 INFO L78 Accepts]: Start accepts. Automaton has 24496 states and 41521 transitions. Word has length 121 [2019-11-07 04:11:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:03,036 INFO L462 AbstractCegarLoop]: Abstraction has 24496 states and 41521 transitions. [2019-11-07 04:11:03,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 24496 states and 41521 transitions. [2019-11-07 04:11:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 04:11:03,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:03,045 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:03,046 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -856043766, now seen corresponding path program 1 times [2019-11-07 04:11:03,046 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:03,047 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930417678] [2019-11-07 04:11:03,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 04:11:03,213 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930417678] [2019-11-07 04:11:03,213 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:03,213 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:11:03,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223493520] [2019-11-07 04:11:03,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:11:03,214 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:03,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:11:03,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:11:03,215 INFO L87 Difference]: Start difference. First operand 24496 states and 41521 transitions. Second operand 5 states.