/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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:44,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:44,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:44,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:44,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:44,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:44,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:44,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:44,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:44,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:44,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:44,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:44,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:44,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:44,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:44,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:44,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:44,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:44,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:44,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:44,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:44,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:44,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:44,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:44,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:44,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:44,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:44,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:44,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:44,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:44,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:44,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:44,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:44,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:44,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:44,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:44,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:44,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:44,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:44,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:44,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:44,808 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 04:11:44,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:44,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:44,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:44,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:44,833 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:44,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:44,833 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:44,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:44,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:44,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:44,835 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:44,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:44,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:44,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:44,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:44,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:44,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:44,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:44,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:44,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:44,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:44,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:44,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:44,838 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 04:11:45,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:45,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:45,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:45,146 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:45,146 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:45,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-11-07 04:11:45,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d458275/633fd6f89d2b448591a08ac3c2924244/FLAGcdcc14b6b [2019-11-07 04:11:45,868 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:45,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-11-07 04:11:45,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d458275/633fd6f89d2b448591a08ac3c2924244/FLAGcdcc14b6b [2019-11-07 04:11:46,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d458275/633fd6f89d2b448591a08ac3c2924244 [2019-11-07 04:11:46,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:46,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:46,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:46,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:46,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:46,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:46" (1/1) ... [2019-11-07 04:11:46,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16eebeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:46, skipping insertion in model container [2019-11-07 04:11:46,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:46" (1/1) ... [2019-11-07 04:11:46,099 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:46,177 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:46,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:46,930 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:47,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:47,089 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:47,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47 WrapperNode [2019-11-07 04:11:47,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:47,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:47,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:47,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:47,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (1/1) ... [2019-11-07 04:11:47,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:47,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:47,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:47,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:47,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (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 04:11:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:47,354 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:47,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:47,354 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:47,354 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:11:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:11:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:11:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:11:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:52,428 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:52,428 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:52,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:52 BoogieIcfgContainer [2019-11-07 04:11:52,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:52,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:52,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:52,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:52,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:46" (1/3) ... [2019-11-07 04:11:52,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3b93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:52, skipping insertion in model container [2019-11-07 04:11:52,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:47" (2/3) ... [2019-11-07 04:11:52,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3b93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:52, skipping insertion in model container [2019-11-07 04:11:52,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:52" (3/3) ... [2019-11-07 04:11:52,438 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2019-11-07 04:11:52,448 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:52,457 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:52,469 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:52,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:52,501 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:52,501 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:52,501 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:52,501 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:52,501 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:52,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:52,502 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states. [2019-11-07 04:11:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:11:52,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:52,558 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:52,560 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash 581244493, now seen corresponding path program 1 times [2019-11-07 04:11:52,575 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:52,575 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149381894] [2019-11-07 04:11:52,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:53,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149381894] [2019-11-07 04:11:53,463 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344757495] [2019-11-07 04:11:53,463 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 04:11:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:54,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:54,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:54,253 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:54,387 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:54,388 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:54,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206811793] [2019-11-07 04:11:54,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:54,395 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:54,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:54,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:54,414 INFO L87 Difference]: Start difference. First operand 593 states. Second operand 3 states. [2019-11-07 04:11:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:54,637 INFO L93 Difference]: Finished difference Result 1301 states and 1989 transitions. [2019-11-07 04:11:54,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:54,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-11-07 04:11:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:54,666 INFO L225 Difference]: With dead ends: 1301 [2019-11-07 04:11:54,666 INFO L226 Difference]: Without dead ends: 840 [2019-11-07 04:11:54,675 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-11-07 04:11:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 827. [2019-11-07 04:11:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-11-07 04:11:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1248 transitions. [2019-11-07 04:11:54,837 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1248 transitions. Word has length 118 [2019-11-07 04:11:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:54,838 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1248 transitions. [2019-11-07 04:11:54,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1248 transitions. [2019-11-07 04:11:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:54,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:54,849 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:55,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:55,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1987402003, now seen corresponding path program 1 times [2019-11-07 04:11:55,060 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:55,060 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310621026] [2019-11-07 04:11:55,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:55,381 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310621026] [2019-11-07 04:11:55,382 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:55,382 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:11:55,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598398106] [2019-11-07 04:11:55,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:55,385 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:55,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:55,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:11:55,385 INFO L87 Difference]: Start difference. First operand 827 states and 1248 transitions. Second operand 7 states. [2019-11-07 04:11:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:58,554 INFO L93 Difference]: Finished difference Result 3152 states and 4892 transitions. [2019-11-07 04:11:58,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:11:58,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-11-07 04:11:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:58,576 INFO L225 Difference]: With dead ends: 3152 [2019-11-07 04:11:58,576 INFO L226 Difference]: Without dead ends: 2356 [2019-11-07 04:11:58,583 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 04:11:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-11-07 04:11:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2281. [2019-11-07 04:11:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2019-11-07 04:11:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3530 transitions. [2019-11-07 04:11:58,757 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3530 transitions. Word has length 119 [2019-11-07 04:11:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:58,765 INFO L462 AbstractCegarLoop]: Abstraction has 2281 states and 3530 transitions. [2019-11-07 04:11:58,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3530 transitions. [2019-11-07 04:11:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:58,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:58,776 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:58,776 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:58,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1359031422, now seen corresponding path program 1 times [2019-11-07 04:11:58,777 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:58,777 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424615682] [2019-11-07 04:11:58,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:59,083 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424615682] [2019-11-07 04:11:59,083 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361434808] [2019-11-07 04:11:59,084 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 04:11:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:59,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:59,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:59,846 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:11:59,999 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:59,999 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:59,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374990896] [2019-11-07 04:12:00,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:00,003 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:00,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:00,003 INFO L87 Difference]: Start difference. First operand 2281 states and 3530 transitions. Second operand 3 states. [2019-11-07 04:12:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:00,198 INFO L93 Difference]: Finished difference Result 5605 states and 8810 transitions. [2019-11-07 04:12:00,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:00,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:12:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:00,230 INFO L225 Difference]: With dead ends: 5605 [2019-11-07 04:12:00,231 INFO L226 Difference]: Without dead ends: 3355 [2019-11-07 04:12:00,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2019-11-07 04:12:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3270. [2019-11-07 04:12:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2019-11-07 04:12:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5073 transitions. [2019-11-07 04:12:00,513 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5073 transitions. Word has length 119 [2019-11-07 04:12:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:00,513 INFO L462 AbstractCegarLoop]: Abstraction has 3270 states and 5073 transitions. [2019-11-07 04:12:00,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5073 transitions. [2019-11-07 04:12:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:12:00,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:00,519 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:00,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:00,727 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1260805577, now seen corresponding path program 1 times [2019-11-07 04:12:00,728 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:00,728 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533895894] [2019-11-07 04:12:00,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:00,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533895894] [2019-11-07 04:12:00,964 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005382827] [2019-11-07 04:12:00,964 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 [2019-11-07 04:12:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:01,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:01,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:12:01,557 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:12:01,685 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:01,686 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 04:12:01,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297354833] [2019-11-07 04:12:01,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:12:01,687 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:01,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:12:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:01,688 INFO L87 Difference]: Start difference. First operand 3270 states and 5073 transitions. Second operand 4 states. [2019-11-07 04:12:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:01,917 INFO L93 Difference]: Finished difference Result 6357 states and 9958 transitions. [2019-11-07 04:12:01,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:12:01,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:12:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:02,089 INFO L225 Difference]: With dead ends: 6357 [2019-11-07 04:12:02,089 INFO L226 Difference]: Without dead ends: 3118 [2019-11-07 04:12:02,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2019-11-07 04:12:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3062. [2019-11-07 04:12:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2019-11-07 04:12:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4718 transitions. [2019-11-07 04:12:02,323 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4718 transitions. Word has length 120 [2019-11-07 04:12:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:02,323 INFO L462 AbstractCegarLoop]: Abstraction has 3062 states and 4718 transitions. [2019-11-07 04:12:02,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:12:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4718 transitions. [2019-11-07 04:12:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:12:02,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:02,329 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:02,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:02,539 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:02,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1128355594, now seen corresponding path program 1 times [2019-11-07 04:12:02,540 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:02,541 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982272514] [2019-11-07 04:12:02,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:12:02,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982272514] [2019-11-07 04:12:02,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611416606] [2019-11-07 04:12:02,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:03,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:12:03,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:12:03,617 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:03,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:04,099 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:12:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:04,158 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:04,158 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 04:12:04,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606952038] [2019-11-07 04:12:04,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:12:04,160 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:04,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:12:04,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:04,161 INFO L87 Difference]: Start difference. First operand 3062 states and 4718 transitions. Second operand 6 states. [2019-11-07 04:12:05,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:05,495 INFO L93 Difference]: Finished difference Result 8030 states and 12587 transitions. [2019-11-07 04:12:05,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:12:05,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 04:12:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:05,540 INFO L225 Difference]: With dead ends: 8030 [2019-11-07 04:12:05,540 INFO L226 Difference]: Without dead ends: 4999 [2019-11-07 04:12:05,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2019-11-07 04:12:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4963. [2019-11-07 04:12:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4963 states. [2019-11-07 04:12:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7520 transitions. [2019-11-07 04:12:05,841 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7520 transitions. Word has length 120 [2019-11-07 04:12:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:05,842 INFO L462 AbstractCegarLoop]: Abstraction has 4963 states and 7520 transitions. [2019-11-07 04:12:05,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:12:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7520 transitions. [2019-11-07 04:12:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:12:05,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:05,847 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:06,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:06,055 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1968729867, now seen corresponding path program 1 times [2019-11-07 04:12:06,056 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:06,056 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839710372] [2019-11-07 04:12:06,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:12:06,309 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839710372] [2019-11-07 04:12:06,309 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:06,309 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:06,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695427714] [2019-11-07 04:12:06,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:06,310 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:06,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:06,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:06,311 INFO L87 Difference]: Start difference. First operand 4963 states and 7520 transitions. Second operand 10 states. [2019-11-07 04:12:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:09,782 INFO L93 Difference]: Finished difference Result 17484 states and 27189 transitions. [2019-11-07 04:12:09,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:12:09,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-11-07 04:12:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:09,894 INFO L225 Difference]: With dead ends: 17484 [2019-11-07 04:12:09,894 INFO L226 Difference]: Without dead ends: 12552 [2019-11-07 04:12:09,939 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:12:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2019-11-07 04:12:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12397. [2019-11-07 04:12:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12397 states. [2019-11-07 04:12:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 19082 transitions. [2019-11-07 04:12:10,542 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 19082 transitions. Word has length 125 [2019-11-07 04:12:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:10,542 INFO L462 AbstractCegarLoop]: Abstraction has 12397 states and 19082 transitions. [2019-11-07 04:12:10,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 19082 transitions. [2019-11-07 04:12:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:12:10,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:10,546 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:10,547 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash -722498573, now seen corresponding path program 1 times [2019-11-07 04:12:10,547 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:10,547 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944730366] [2019-11-07 04:12:10,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 04:12:10,919 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944730366] [2019-11-07 04:12:10,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:10,919 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:12:10,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890726833] [2019-11-07 04:12:10,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:12:10,920 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:12:10,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:12:10,921 INFO L87 Difference]: Start difference. First operand 12397 states and 19082 transitions. Second operand 14 states.