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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:10,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:10,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:10,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:10,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:10,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:10,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:10,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:10,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:10,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:10,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:10,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:10,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:10,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:10,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:10,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:10,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:10,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:10,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:10,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:10,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:10,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:10,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:10,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:10,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:10,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:10,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:10,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:10,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:10,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:10,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:10,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:10,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:10,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:10,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:10,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:10,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:10,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:10,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:10,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:10,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:10,817 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 [2019-10-15 03:09:10,840 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:10,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:10,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:10,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:10,844 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:10,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:10,845 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:10,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:10,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:10,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:10,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:10,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:10,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:10,848 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:10,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:10,849 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:10,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:10,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:10,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:10,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:10,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:10,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:10,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:10,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:10,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:10,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:10,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:10,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:10,852 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 [2019-10-15 03:09:11,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:11,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:11,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:11,248 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:11,248 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:11,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-15 03:09:11,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe11fe1d6/00670d4e037b4fe3982495992bdfda59/FLAGcc72a0e39 [2019-10-15 03:09:12,040 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:12,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-15 03:09:12,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe11fe1d6/00670d4e037b4fe3982495992bdfda59/FLAGcc72a0e39 [2019-10-15 03:09:12,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe11fe1d6/00670d4e037b4fe3982495992bdfda59 [2019-10-15 03:09:12,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:12,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:12,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:12,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:12,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:12,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690905fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12, skipping insertion in model container [2019-10-15 03:09:12,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,272 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:12,370 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:13,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:13,169 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:13,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:13,440 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:13,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13 WrapperNode [2019-10-15 03:09:13,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:13,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:13,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:13,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:13,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:13,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:13,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:13,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:13,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (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 [2019-10-15 03:09:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:13,829 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:13,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:13,834 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:13,835 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:13,836 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:13,840 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:13,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:13,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:13,840 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:13,841 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:13,841 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:09:13,841 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:13,841 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:09:13,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:13,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:13,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:13,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:13,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:13,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:13,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:13,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:13,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:13,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:13,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:20,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:20,124 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:20,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:20 BoogieIcfgContainer [2019-10-15 03:09:20,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:20,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:20,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:20,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:20,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:12" (1/3) ... [2019-10-15 03:09:20,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:20, skipping insertion in model container [2019-10-15 03:09:20,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (2/3) ... [2019-10-15 03:09:20,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:20, skipping insertion in model container [2019-10-15 03:09:20,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:20" (3/3) ... [2019-10-15 03:09:20,137 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2019-10-15 03:09:20,149 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:20,162 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:20,176 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:20,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:20,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:20,216 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:20,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:20,216 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:20,216 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:20,216 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:20,216 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states. [2019-10-15 03:09:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:20,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:20,274 INFO L380 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] [2019-10-15 03:09:20,279 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:20,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1386920768, now seen corresponding path program 1 times [2019-10-15 03:09:20,300 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:20,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506145276] [2019-10-15 03:09:20,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:21,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506145276] [2019-10-15 03:09:21,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:21,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:21,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032042702] [2019-10-15 03:09:21,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:21,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:21,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:21,275 INFO L87 Difference]: Start difference. First operand 610 states. Second operand 8 states. [2019-10-15 03:09:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:26,210 INFO L93 Difference]: Finished difference Result 1738 states and 2656 transitions. [2019-10-15 03:09:26,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:26,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-15 03:09:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:26,248 INFO L225 Difference]: With dead ends: 1738 [2019-10-15 03:09:26,248 INFO L226 Difference]: Without dead ends: 1256 [2019-10-15 03:09:26,258 INFO L600 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 [2019-10-15 03:09:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2019-10-15 03:09:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1246. [2019-10-15 03:09:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2019-10-15 03:09:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1856 transitions. [2019-10-15 03:09:26,473 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1856 transitions. Word has length 80 [2019-10-15 03:09:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:26,475 INFO L462 AbstractCegarLoop]: Abstraction has 1246 states and 1856 transitions. [2019-10-15 03:09:26,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1856 transitions. [2019-10-15 03:09:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:26,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:26,480 INFO L380 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] [2019-10-15 03:09:26,480 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:26,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1331562634, now seen corresponding path program 1 times [2019-10-15 03:09:26,481 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:26,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490653179] [2019-10-15 03:09:26,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:26,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:26,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:26,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490653179] [2019-10-15 03:09:26,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:26,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:26,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924886231] [2019-10-15 03:09:26,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:26,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:26,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:26,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:26,967 INFO L87 Difference]: Start difference. First operand 1246 states and 1856 transitions. Second operand 10 states. [2019-10-15 03:09:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:28,287 INFO L93 Difference]: Finished difference Result 1274 states and 1890 transitions. [2019-10-15 03:09:28,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:28,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-15 03:09:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:28,303 INFO L225 Difference]: With dead ends: 1274 [2019-10-15 03:09:28,303 INFO L226 Difference]: Without dead ends: 1271 [2019-10-15 03:09:28,306 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2019-10-15 03:09:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1248. [2019-10-15 03:09:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-10-15 03:09:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1856 transitions. [2019-10-15 03:09:28,395 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1856 transitions. Word has length 81 [2019-10-15 03:09:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:28,399 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1856 transitions. [2019-10-15 03:09:28,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1856 transitions. [2019-10-15 03:09:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:09:28,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:28,413 INFO L380 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] [2019-10-15 03:09:28,413 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:28,414 INFO L82 PathProgramCache]: Analyzing trace with hash 429486188, now seen corresponding path program 1 times [2019-10-15 03:09:28,414 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:28,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712405046] [2019-10-15 03:09:28,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:28,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:28,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:28,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712405046] [2019-10-15 03:09:28,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:28,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:09:28,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240988464] [2019-10-15 03:09:28,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:28,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:28,673 INFO L87 Difference]: Start difference. First operand 1248 states and 1856 transitions. Second operand 3 states. [2019-10-15 03:09:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:29,001 INFO L93 Difference]: Finished difference Result 3565 states and 5418 transitions. [2019-10-15 03:09:29,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:29,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-15 03:09:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:29,028 INFO L225 Difference]: With dead ends: 3565 [2019-10-15 03:09:29,029 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 03:09:29,039 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 03:09:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2280. [2019-10-15 03:09:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-10-15 03:09:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3419 transitions. [2019-10-15 03:09:29,205 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3419 transitions. Word has length 82 [2019-10-15 03:09:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:29,206 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3419 transitions. [2019-10-15 03:09:29,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3419 transitions. [2019-10-15 03:09:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:29,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:29,208 INFO L380 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] [2019-10-15 03:09:29,209 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1093732194, now seen corresponding path program 1 times [2019-10-15 03:09:29,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:29,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109782163] [2019-10-15 03:09:29,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:29,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109782163] [2019-10-15 03:09:29,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505878981] [2019-10-15 03:09:29,670 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 [2019-10-15 03:09:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:30,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:30,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:30,351 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:30,535 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:30,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:30,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146139413] [2019-10-15 03:09:30,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:30,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:30,539 INFO L87 Difference]: Start difference. First operand 2280 states and 3419 transitions. Second operand 3 states. [2019-10-15 03:09:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:30,837 INFO L93 Difference]: Finished difference Result 4991 states and 7565 transitions. [2019-10-15 03:09:30,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:30,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:09:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:30,868 INFO L225 Difference]: With dead ends: 4991 [2019-10-15 03:09:30,868 INFO L226 Difference]: Without dead ends: 2742 [2019-10-15 03:09:30,880 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2019-10-15 03:09:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2686. [2019-10-15 03:09:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2686 states. [2019-10-15 03:09:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4041 transitions. [2019-10-15 03:09:31,088 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4041 transitions. Word has length 81 [2019-10-15 03:09:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:31,089 INFO L462 AbstractCegarLoop]: Abstraction has 2686 states and 4041 transitions. [2019-10-15 03:09:31,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4041 transitions. [2019-10-15 03:09:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 03:09:31,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:31,094 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:31,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:31,303 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash -833005165, now seen corresponding path program 1 times [2019-10-15 03:09:31,304 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:31,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951518773] [2019-10-15 03:09:31,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:09:31,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951518773] [2019-10-15 03:09:31,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619312265] [2019-10-15 03:09:31,779 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 [2019-10-15 03:09:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:32,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:09:32,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:32,977 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:33,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:09:34,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:34,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-15 03:09:34,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685275311] [2019-10-15 03:09:34,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:09:34,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:09:34,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:09:34,092 INFO L87 Difference]: Start difference. First operand 2686 states and 4041 transitions. Second operand 9 states. [2019-10-15 03:09:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:45,606 INFO L93 Difference]: Finished difference Result 6900 states and 10501 transitions. [2019-10-15 03:09:45,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:09:45,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2019-10-15 03:09:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:45,645 INFO L225 Difference]: With dead ends: 6900 [2019-10-15 03:09:45,645 INFO L226 Difference]: Without dead ends: 4245 [2019-10-15 03:09:45,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 312 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:09:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2019-10-15 03:09:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 4142. [2019-10-15 03:09:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4142 states. [2019-10-15 03:09:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6308 transitions. [2019-10-15 03:09:45,917 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6308 transitions. Word has length 162 [2019-10-15 03:09:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:45,920 INFO L462 AbstractCegarLoop]: Abstraction has 4142 states and 6308 transitions. [2019-10-15 03:09:45,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:09:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6308 transitions. [2019-10-15 03:09:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-15 03:09:45,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:45,934 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:46,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:46,144 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1482876243, now seen corresponding path program 1 times [2019-10-15 03:09:46,145 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:46,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549875098] [2019-10-15 03:09:46,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:46,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:46,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-15 03:09:46,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549875098] [2019-10-15 03:09:46,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157895811] [2019-10-15 03:09:46,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:47,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 3901 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:09:47,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 03:09:47,695 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:48,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:48,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-15 03:09:48,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:48,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 5] total 17 [2019-10-15 03:09:48,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652352612] [2019-10-15 03:09:48,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:48,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:48,114 INFO L87 Difference]: Start difference. First operand 4142 states and 6308 transitions. Second operand 7 states.