/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_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:41,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:41,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:41,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:41,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:41,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:41,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:41,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:41,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:41,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:41,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:41,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:41,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:41,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:41,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:41,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:41,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:41,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:41,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:41,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:41,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:41,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:41,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:41,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:41,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:41,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:41,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:41,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:41,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:41,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:41,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:41,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:41,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:41,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:41,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:41,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:41,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:41,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:41,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:41,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:41,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:41,669 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 04:11:41,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:41,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:41,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:41,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:41,707 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:41,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:41,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:41,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:41,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:41,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:41,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:41,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:41,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:41,712 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:41,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:41,712 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:41,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:41,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:41,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:41,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:41,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:41,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:41,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:41,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:41,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:41,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:41,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:41,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:41,718 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 04:11:41,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:42,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:42,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:42,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:42,009 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:42,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-11-07 04:11:42,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9ceb732/fcab91253ab84803adb8f434a7380e29/FLAGa8cf1a405 [2019-11-07 04:11:42,712 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:42,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-11-07 04:11:42,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9ceb732/fcab91253ab84803adb8f434a7380e29/FLAGa8cf1a405 [2019-11-07 04:11:42,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9ceb732/fcab91253ab84803adb8f434a7380e29 [2019-11-07 04:11:42,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:42,909 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:42,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:42,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:42,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:42,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:42" (1/1) ... [2019-11-07 04:11:42,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9639fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:42, skipping insertion in model container [2019-11-07 04:11:42,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:42" (1/1) ... [2019-11-07 04:11:42,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:43,019 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:43,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:43,765 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:43,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:44,004 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:44,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44 WrapperNode [2019-11-07 04:11:44,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:44,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:44,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:44,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:44,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (1/1) ... [2019-11-07 04:11:44,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:44,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:44,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:44,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:44,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (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 04:11:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-11-07 04:11:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-11-07 04:11:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:49,246 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:49,247 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:49,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:49 BoogieIcfgContainer [2019-11-07 04:11:49,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:49,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:49,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:49,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:49,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:42" (1/3) ... [2019-11-07 04:11:49,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693360e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:49, skipping insertion in model container [2019-11-07 04:11:49,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:44" (2/3) ... [2019-11-07 04:11:49,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693360e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:49, skipping insertion in model container [2019-11-07 04:11:49,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:49" (3/3) ... [2019-11-07 04:11:49,259 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2019-11-07 04:11:49,270 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:49,282 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:49,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:49,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:49,333 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:49,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:49,334 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:49,334 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:49,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:49,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:49,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2019-11-07 04:11:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-07 04:11:49,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:49,390 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:49,392 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1732124610, now seen corresponding path program 1 times [2019-11-07 04:11:49,408 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:49,409 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819384133] [2019-11-07 04:11:49,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:11:50,219 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819384133] [2019-11-07 04:11:50,219 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:50,220 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:11:50,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276410392] [2019-11-07 04:11:50,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:11:50,226 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:11:50,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:11:50,244 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 8 states. [2019-11-07 04:11:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:54,243 INFO L93 Difference]: Finished difference Result 1630 states and 2514 transitions. [2019-11-07 04:11:54,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:11:54,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-11-07 04:11:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:54,294 INFO L225 Difference]: With dead ends: 1630 [2019-11-07 04:11:54,294 INFO L226 Difference]: Without dead ends: 1175 [2019-11-07 04:11:54,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:11:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-11-07 04:11:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1165. [2019-11-07 04:11:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-11-07 04:11:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1750 transitions. [2019-11-07 04:11:54,500 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1750 transitions. Word has length 80 [2019-11-07 04:11:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:54,502 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1750 transitions. [2019-11-07 04:11:54,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:11:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1750 transitions. [2019-11-07 04:11:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:11:54,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:54,514 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:54,514 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:54,514 INFO L82 PathProgramCache]: Analyzing trace with hash -320565942, now seen corresponding path program 1 times [2019-11-07 04:11:54,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:54,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737360626] [2019-11-07 04:11:54,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:11:54,819 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737360626] [2019-11-07 04:11:54,820 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:54,820 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:11:54,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574471337] [2019-11-07 04:11:54,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:54,822 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:11:54,823 INFO L87 Difference]: Start difference. First operand 1165 states and 1750 transitions. Second operand 3 states. [2019-11-07 04:11:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:55,028 INFO L93 Difference]: Finished difference Result 3423 states and 5209 transitions. [2019-11-07 04:11:55,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:55,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-11-07 04:11:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:55,054 INFO L225 Difference]: With dead ends: 3423 [2019-11-07 04:11:55,055 INFO L226 Difference]: Without dead ends: 2291 [2019-11-07 04:11:55,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:11:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-11-07 04:11:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2167. [2019-11-07 04:11:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2019-11-07 04:11:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3304 transitions. [2019-11-07 04:11:55,253 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3304 transitions. Word has length 81 [2019-11-07 04:11:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:55,256 INFO L462 AbstractCegarLoop]: Abstraction has 2167 states and 3304 transitions. [2019-11-07 04:11:55,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3304 transitions. [2019-11-07 04:11:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:11:55,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:55,278 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:55,278 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash -636058728, now seen corresponding path program 1 times [2019-11-07 04:11:55,280 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:55,280 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074236735] [2019-11-07 04:11:55,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:11:55,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074236735] [2019-11-07 04:11:55,578 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:55,579 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:11:55,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275160014] [2019-11-07 04:11:55,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:11:55,581 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:11:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:55,583 INFO L87 Difference]: Start difference. First operand 2167 states and 3304 transitions. Second operand 10 states. [2019-11-07 04:11:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:57,750 INFO L93 Difference]: Finished difference Result 4893 states and 7479 transitions. [2019-11-07 04:11:57,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 04:11:57,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2019-11-07 04:11:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:57,782 INFO L225 Difference]: With dead ends: 4893 [2019-11-07 04:11:57,782 INFO L226 Difference]: Without dead ends: 2757 [2019-11-07 04:11:57,795 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:11:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2019-11-07 04:11:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2745. [2019-11-07 04:11:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2019-11-07 04:11:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4139 transitions. [2019-11-07 04:11:57,956 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4139 transitions. Word has length 112 [2019-11-07 04:11:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:57,957 INFO L462 AbstractCegarLoop]: Abstraction has 2745 states and 4139 transitions. [2019-11-07 04:11:57,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:11:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4139 transitions. [2019-11-07 04:11:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:11:57,959 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:57,960 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:57,960 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1453420152, now seen corresponding path program 1 times [2019-11-07 04:11:57,961 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:57,961 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153229207] [2019-11-07 04:11:57,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:11:58,291 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153229207] [2019-11-07 04:11:58,291 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:58,291 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:11:58,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424797022] [2019-11-07 04:11:58,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:58,292 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:58,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:58,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:11:58,293 INFO L87 Difference]: Start difference. First operand 2745 states and 4139 transitions. Second operand 7 states. [2019-11-07 04:12:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:01,265 INFO L93 Difference]: Finished difference Result 8108 states and 12664 transitions. [2019-11-07 04:12:01,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:12:01,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:12:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:01,324 INFO L225 Difference]: With dead ends: 8108 [2019-11-07 04:12:01,325 INFO L226 Difference]: Without dead ends: 5394 [2019-11-07 04:12:01,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:01,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2019-11-07 04:12:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 5287. [2019-11-07 04:12:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2019-11-07 04:12:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 8095 transitions. [2019-11-07 04:12:01,717 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 8095 transitions. Word has length 113 [2019-11-07 04:12:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:01,717 INFO L462 AbstractCegarLoop]: Abstraction has 5287 states and 8095 transitions. [2019-11-07 04:12:01,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:12:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 8095 transitions. [2019-11-07 04:12:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:12:01,720 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:01,720 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:01,721 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:01,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1698191104, now seen corresponding path program 1 times [2019-11-07 04:12:01,721 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:01,722 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959603502] [2019-11-07 04:12:01,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:01,943 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959603502] [2019-11-07 04:12:01,944 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602506393] [2019-11-07 04:12:01,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:02,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:02,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:02,810 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:02,984 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:02,984 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:02,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663567490] [2019-11-07 04:12:02,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:02,986 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:02,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:02,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:02,987 INFO L87 Difference]: Start difference. First operand 5287 states and 8095 transitions. Second operand 3 states. [2019-11-07 04:12:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:03,520 INFO L93 Difference]: Finished difference Result 14687 states and 23998 transitions. [2019-11-07 04:12:03,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:03,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-11-07 04:12:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:03,628 INFO L225 Difference]: With dead ends: 14687 [2019-11-07 04:12:03,628 INFO L226 Difference]: Without dead ends: 9431 [2019-11-07 04:12:03,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2019-11-07 04:12:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 8931. [2019-11-07 04:12:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8931 states. [2019-11-07 04:12:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8931 states to 8931 states and 13895 transitions. [2019-11-07 04:12:04,520 INFO L78 Accepts]: Start accepts. Automaton has 8931 states and 13895 transitions. Word has length 112 [2019-11-07 04:12:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:04,521 INFO L462 AbstractCegarLoop]: Abstraction has 8931 states and 13895 transitions. [2019-11-07 04:12:04,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8931 states and 13895 transitions. [2019-11-07 04:12:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:12:04,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:04,525 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:04,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:04,738 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1601228581, now seen corresponding path program 1 times [2019-11-07 04:12:04,739 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:04,739 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648597263] [2019-11-07 04:12:04,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:05,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648597263] [2019-11-07 04:12:05,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386517685] [2019-11-07 04:12:05,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:05,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:05,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:06,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:06,255 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:06,255 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:06,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092977030] [2019-11-07 04:12:06,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:06,258 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:06,259 INFO L87 Difference]: Start difference. First operand 8931 states and 13895 transitions. Second operand 3 states. [2019-11-07 04:12:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:06,816 INFO L93 Difference]: Finished difference Result 19685 states and 31776 transitions. [2019-11-07 04:12:06,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:06,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-11-07 04:12:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:06,916 INFO L225 Difference]: With dead ends: 19685 [2019-11-07 04:12:06,916 INFO L226 Difference]: Without dead ends: 10785 [2019-11-07 04:12:06,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10785 states. [2019-11-07 04:12:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10785 to 10513. [2019-11-07 04:12:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-11-07 04:12:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16373 transitions. [2019-11-07 04:12:08,515 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16373 transitions. Word has length 113 [2019-11-07 04:12:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:08,516 INFO L462 AbstractCegarLoop]: Abstraction has 10513 states and 16373 transitions. [2019-11-07 04:12:08,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16373 transitions. [2019-11-07 04:12:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:12:08,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:08,520 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:08,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:08,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1834686710, now seen corresponding path program 1 times [2019-11-07 04:12:08,740 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:08,740 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485742590] [2019-11-07 04:12:08,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 04:12:09,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485742590] [2019-11-07 04:12:09,093 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:09,094 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:09,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069595990] [2019-11-07 04:12:09,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:09,096 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:09,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:09,097 INFO L87 Difference]: Start difference. First operand 10513 states and 16373 transitions. Second operand 10 states.