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_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:44,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:44,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:44,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:44,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:44,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:44,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:44,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:44,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:44,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:44,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:44,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:44,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:44,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:44,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:44,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:44,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:44,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:44,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:44,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:44,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:44,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:44,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:44,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:44,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:44,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:44,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:44,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:44,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:44,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:44,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:44,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:44,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:44,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:44,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:44,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:44,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:44,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:44,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:44,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:44,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:44,850 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 03:07:44,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:44,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:44,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:44,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:44,878 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:44,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:44,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:44,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:44,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:44,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:44,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:44,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:44,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:44,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:44,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:44,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:44,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:44,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:44,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:44,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:44,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:44,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:44,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:44,889 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 03:07:45,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:45,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:45,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:45,215 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:45,216 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:45,217 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-15 03:07:45,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26991f2e/b2673e13ac784f3087a346181d78a5e6/FLAG019073a9f [2019-10-15 03:07:45,929 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:45,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-15 03:07:45,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26991f2e/b2673e13ac784f3087a346181d78a5e6/FLAG019073a9f [2019-10-15 03:07:46,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26991f2e/b2673e13ac784f3087a346181d78a5e6 [2019-10-15 03:07:46,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:46,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:46,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:46,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:46,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:46,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:46" (1/1) ... [2019-10-15 03:07:46,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4255fbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:46, skipping insertion in model container [2019-10-15 03:07:46,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:46" (1/1) ... [2019-10-15 03:07:46,154 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:46,250 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:47,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:47,033 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:47,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:47,316 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:47,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47 WrapperNode [2019-10-15 03:07:47,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:47,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:47,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:47,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:47,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (1/1) ... [2019-10-15 03:07:47,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:47,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:47,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:47,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:47,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (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 [2019-10-15 03:07:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:07:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-15 03:07:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:07:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:54,725 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:54,725 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:54,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:54 BoogieIcfgContainer [2019-10-15 03:07:54,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:54,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:54,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:54,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:54,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:46" (1/3) ... [2019-10-15 03:07:54,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19149a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:54, skipping insertion in model container [2019-10-15 03:07:54,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:47" (2/3) ... [2019-10-15 03:07:54,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19149a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:54, skipping insertion in model container [2019-10-15 03:07:54,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:54" (3/3) ... [2019-10-15 03:07:54,737 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2019-10-15 03:07:54,748 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:54,761 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:54,774 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:54,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:54,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:54,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:54,808 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:54,808 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:54,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:54,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:54,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-10-15 03:07:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:07:54,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:54,858 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:54,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:54,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1200228914, now seen corresponding path program 1 times [2019-10-15 03:07:54,876 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:54,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774637120] [2019-10-15 03:07:54,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:54,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:54,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:55,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774637120] [2019-10-15 03:07:55,673 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:55,673 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:07:55,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175932918] [2019-10-15 03:07:55,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:07:55,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:07:55,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:55,707 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 2 states. [2019-10-15 03:07:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:55,797 INFO L93 Difference]: Finished difference Result 493 states and 729 transitions. [2019-10-15 03:07:55,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:07:55,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-15 03:07:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:55,858 INFO L225 Difference]: With dead ends: 493 [2019-10-15 03:07:55,858 INFO L226 Difference]: Without dead ends: 459 [2019-10-15 03:07:55,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-10-15 03:07:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2019-10-15 03:07:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-15 03:07:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 678 transitions. [2019-10-15 03:07:56,004 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 678 transitions. Word has length 97 [2019-10-15 03:07:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:56,008 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 678 transitions. [2019-10-15 03:07:56,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:07:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 678 transitions. [2019-10-15 03:07:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:07:56,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:56,029 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:56,030 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1372761545, now seen corresponding path program 1 times [2019-10-15 03:07:56,031 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:56,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127444707] [2019-10-15 03:07:56,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:56,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:56,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:56,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127444707] [2019-10-15 03:07:56,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:56,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:56,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376583975] [2019-10-15 03:07:56,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:56,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:56,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:56,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:56,647 INFO L87 Difference]: Start difference. First operand 459 states and 678 transitions. Second operand 9 states. [2019-10-15 03:08:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:05,933 INFO L93 Difference]: Finished difference Result 1238 states and 1874 transitions. [2019-10-15 03:08:05,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:08:05,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-15 03:08:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:05,973 INFO L225 Difference]: With dead ends: 1238 [2019-10-15 03:08:05,974 INFO L226 Difference]: Without dead ends: 832 [2019-10-15 03:08:05,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:08:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2019-10-15 03:08:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 801. [2019-10-15 03:08:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-10-15 03:08:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1172 transitions. [2019-10-15 03:08:06,192 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1172 transitions. Word has length 98 [2019-10-15 03:08:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:06,196 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1172 transitions. [2019-10-15 03:08:06,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:08:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1172 transitions. [2019-10-15 03:08:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:08:06,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:06,203 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:06,204 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:06,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1341462773, now seen corresponding path program 1 times [2019-10-15 03:08:06,204 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:06,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766598748] [2019-10-15 03:08:06,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:06,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766598748] [2019-10-15 03:08:06,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:06,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:08:06,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980864205] [2019-10-15 03:08:06,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:08:06,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:08:06,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:08:06,748 INFO L87 Difference]: Start difference. First operand 801 states and 1172 transitions. Second operand 3 states. [2019-10-15 03:08:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:06,926 INFO L93 Difference]: Finished difference Result 2289 states and 3399 transitions. [2019-10-15 03:08:06,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:08:06,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-15 03:08:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:06,949 INFO L225 Difference]: With dead ends: 2289 [2019-10-15 03:08:06,950 INFO L226 Difference]: Without dead ends: 1543 [2019-10-15 03:08:06,955 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 03:08:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2019-10-15 03:08:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1536. [2019-10-15 03:08:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2019-10-15 03:08:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2272 transitions. [2019-10-15 03:08:07,106 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2272 transitions. Word has length 100 [2019-10-15 03:08:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:07,107 INFO L462 AbstractCegarLoop]: Abstraction has 1536 states and 2272 transitions. [2019-10-15 03:08:07,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:08:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2272 transitions. [2019-10-15 03:08:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:08:07,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:07,110 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:07,111 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1364638279, now seen corresponding path program 1 times [2019-10-15 03:08:07,112 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:07,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088942710] [2019-10-15 03:08:07,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:07,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088942710] [2019-10-15 03:08:07,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:07,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:08:07,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513258988] [2019-10-15 03:08:07,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:08:07,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:07,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:08:07,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:08:07,508 INFO L87 Difference]: Start difference. First operand 1536 states and 2272 transitions. Second operand 6 states. [2019-10-15 03:08:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:12,181 INFO L93 Difference]: Finished difference Result 4869 states and 7365 transitions. [2019-10-15 03:08:12,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:08:12,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-15 03:08:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:12,220 INFO L225 Difference]: With dead ends: 4869 [2019-10-15 03:08:12,220 INFO L226 Difference]: Without dead ends: 3389 [2019-10-15 03:08:12,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2019-10-15 03:08:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3070. [2019-10-15 03:08:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2019-10-15 03:08:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 4643 transitions. [2019-10-15 03:08:12,695 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 4643 transitions. Word has length 101 [2019-10-15 03:08:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:12,698 INFO L462 AbstractCegarLoop]: Abstraction has 3070 states and 4643 transitions. [2019-10-15 03:08:12,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:08:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 4643 transitions. [2019-10-15 03:08:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 03:08:12,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:12,709 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:12,709 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash -744602622, now seen corresponding path program 1 times [2019-10-15 03:08:12,710 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:12,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232810571] [2019-10-15 03:08:12,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:12,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:12,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:13,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232810571] [2019-10-15 03:08:13,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:13,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:08:13,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700221373] [2019-10-15 03:08:13,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:08:13,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:08:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:13,136 INFO L87 Difference]: Start difference. First operand 3070 states and 4643 transitions. Second operand 12 states. [2019-10-15 03:08:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:23,118 INFO L93 Difference]: Finished difference Result 9200 states and 13920 transitions. [2019-10-15 03:08:23,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:08:23,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2019-10-15 03:08:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:23,177 INFO L225 Difference]: With dead ends: 9200 [2019-10-15 03:08:23,177 INFO L226 Difference]: Without dead ends: 6185 [2019-10-15 03:08:23,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:08:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2019-10-15 03:08:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6083. [2019-10-15 03:08:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2019-10-15 03:08:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 9110 transitions. [2019-10-15 03:08:23,674 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 9110 transitions. Word has length 139 [2019-10-15 03:08:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:23,679 INFO L462 AbstractCegarLoop]: Abstraction has 6083 states and 9110 transitions. [2019-10-15 03:08:23,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:08:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 9110 transitions. [2019-10-15 03:08:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:08:23,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:23,687 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:23,688 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1173946682, now seen corresponding path program 1 times [2019-10-15 03:08:23,690 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:23,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112946645] [2019-10-15 03:08:23,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:23,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:08:24,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112946645] [2019-10-15 03:08:24,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:24,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:08:24,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423502124] [2019-10-15 03:08:24,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:08:24,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:08:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:24,146 INFO L87 Difference]: Start difference. First operand 6083 states and 9110 transitions. Second operand 9 states.