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_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:58,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:58,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:58,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:58,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:58,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:58,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:58,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:58,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:58,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:58,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:58,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:58,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:58,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:58,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:58,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:58,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:58,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:58,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:58,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:58,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:58,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:58,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:58,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:58,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:58,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:58,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:58,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:58,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:58,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:58,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:58,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:58,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:58,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:58,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:58,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:58,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:58,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:58,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:58,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:58,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:58,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:58,798 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:58,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:58,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:58,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:58,801 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:58,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:58,802 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:58,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:58,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:58,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:58,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:58,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:58,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:58,804 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:58,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:58,805 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:58,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:58,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:58,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:58,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:58,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:58,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:58,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:58,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:58,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:58,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:58,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:58,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:58,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:59,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:59,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:59,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:59,178 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:59,178 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:59,179 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-15 03:09:59,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be93e91cc/f1f7f94e8fab4dec9ddbbd8fe7ebb8cc/FLAGbfaacb571 [2019-10-15 03:10:00,058 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:10:00,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-15 03:10:00,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be93e91cc/f1f7f94e8fab4dec9ddbbd8fe7ebb8cc/FLAGbfaacb571 [2019-10-15 03:10:00,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be93e91cc/f1f7f94e8fab4dec9ddbbd8fe7ebb8cc [2019-10-15 03:10:00,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:10:00,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:10:00,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:00,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:10:00,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:10:00,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:00" (1/1) ... [2019-10-15 03:10:00,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c0ec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:00, skipping insertion in model container [2019-10-15 03:10:00,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:00" (1/1) ... [2019-10-15 03:10:00,250 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:10:00,325 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:10:01,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:01,217 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:10:01,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:01,457 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:10:01,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01 WrapperNode [2019-10-15 03:10:01,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:01,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:10:01,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:10:01,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:10:01,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (1/1) ... [2019-10-15 03:10:01,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:10:01,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:10:01,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:10:01,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:10:01,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (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 03:10:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:10:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:10:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:10:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:10:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:10:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:10:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:10:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:10:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:10:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:10:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:10:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:10:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:10:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:10:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:10:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:10:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:10:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:10:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:10:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:10:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:10:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:10:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:10:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:10:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:10:01,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:10:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:10:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:10:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:10:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:10:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:10:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:10:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:10:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:10:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:10:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:10:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:10:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:10:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:10:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:10:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:10:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:10:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:10:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:10:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:10:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:10:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:10:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:10:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:10:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:10:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:10:01,812 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:10:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:10:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:10:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:10:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:10:01,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:10:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:10:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:10:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:10:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:10:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:10:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:10:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:10:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:10:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:10:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:10:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:10:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:10:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:10:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:10:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:10:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:10:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:10:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:10:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:10:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:10:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:10:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:10:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:07,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:07,655 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:07,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:07 BoogieIcfgContainer [2019-10-15 03:10:07,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:07,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:07,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:07,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:07,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:10:00" (1/3) ... [2019-10-15 03:10:07,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc64c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:07, skipping insertion in model container [2019-10-15 03:10:07,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:01" (2/3) ... [2019-10-15 03:10:07,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc64c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:07, skipping insertion in model container [2019-10-15 03:10:07,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:07" (3/3) ... [2019-10-15 03:10:07,670 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2019-10-15 03:10:07,681 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:07,692 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:07,706 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:07,739 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:07,739 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:07,739 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:07,739 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:07,739 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:07,739 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:07,740 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:07,740 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2019-10-15 03:10:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:10:07,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:07,786 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:07,788 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:07,794 INFO L82 PathProgramCache]: Analyzing trace with hash -142911324, now seen corresponding path program 1 times [2019-10-15 03:10:07,805 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:07,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035118803] [2019-10-15 03:10:07,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:08,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035118803] [2019-10-15 03:10:08,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:08,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:10:08,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359981812] [2019-10-15 03:10:08,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:10:08,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:10:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:08,587 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 2 states. [2019-10-15 03:10:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:08,747 INFO L93 Difference]: Finished difference Result 479 states and 707 transitions. [2019-10-15 03:10:08,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:10:08,749 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:10:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:08,793 INFO L225 Difference]: With dead ends: 479 [2019-10-15 03:10:08,793 INFO L226 Difference]: Without dead ends: 445 [2019-10-15 03:10:08,800 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 03:10:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-15 03:10:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-15 03:10:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-15 03:10:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 656 transitions. [2019-10-15 03:10:08,937 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 656 transitions. Word has length 74 [2019-10-15 03:10:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:08,939 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 656 transitions. [2019-10-15 03:10:08,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:10:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 656 transitions. [2019-10-15 03:10:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:10:08,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:08,947 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:08,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1370699530, now seen corresponding path program 1 times [2019-10-15 03:10:08,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:08,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874599758] [2019-10-15 03:10:08,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:08,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:08,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:09,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874599758] [2019-10-15 03:10:09,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:09,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:09,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089765354] [2019-10-15 03:10:09,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:09,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:09,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:09,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:09,370 INFO L87 Difference]: Start difference. First operand 445 states and 656 transitions. Second operand 6 states. [2019-10-15 03:10:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:14,320 INFO L93 Difference]: Finished difference Result 1350 states and 2056 transitions. [2019-10-15 03:10:14,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:14,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-15 03:10:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:14,333 INFO L225 Difference]: With dead ends: 1350 [2019-10-15 03:10:14,334 INFO L226 Difference]: Without dead ends: 947 [2019-10-15 03:10:14,345 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 03:10:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-10-15 03:10:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 852. [2019-10-15 03:10:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-15 03:10:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1298 transitions. [2019-10-15 03:10:14,472 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1298 transitions. Word has length 75 [2019-10-15 03:10:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:14,475 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1298 transitions. [2019-10-15 03:10:14,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1298 transitions. [2019-10-15 03:10:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:10:14,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:14,495 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:14,495 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1887671256, now seen corresponding path program 1 times [2019-10-15 03:10:14,497 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:14,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245686460] [2019-10-15 03:10:14,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:14,964 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 03:10:14,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245686460] [2019-10-15 03:10:14,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:14,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:10:14,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081918859] [2019-10-15 03:10:14,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:10:14,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:14,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:10:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:14,970 INFO L87 Difference]: Start difference. First operand 852 states and 1298 transitions. Second operand 12 states. [2019-10-15 03:10:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:26,540 INFO L93 Difference]: Finished difference Result 2573 states and 3928 transitions. [2019-10-15 03:10:26,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:10:26,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-15 03:10:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:26,589 INFO L225 Difference]: With dead ends: 2573 [2019-10-15 03:10:26,590 INFO L226 Difference]: Without dead ends: 1763 [2019-10-15 03:10:26,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:10:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2019-10-15 03:10:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1704. [2019-10-15 03:10:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2019-10-15 03:10:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2577 transitions. [2019-10-15 03:10:26,862 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2577 transitions. Word has length 122 [2019-10-15 03:10:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:26,863 INFO L462 AbstractCegarLoop]: Abstraction has 1704 states and 2577 transitions. [2019-10-15 03:10:26,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:10:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2577 transitions. [2019-10-15 03:10:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 03:10:26,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:26,868 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:26,869 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 525588367, now seen corresponding path program 1 times [2019-10-15 03:10:26,870 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:26,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706449455] [2019-10-15 03:10:26,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:26,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:26,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:27,371 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 03:10:27,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706449455] [2019-10-15 03:10:27,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:27,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:27,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563206890] [2019-10-15 03:10:27,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:27,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:27,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:27,375 INFO L87 Difference]: Start difference. First operand 1704 states and 2577 transitions. Second operand 3 states. [2019-10-15 03:10:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:27,603 INFO L93 Difference]: Finished difference Result 4294 states and 6600 transitions. [2019-10-15 03:10:27,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:27,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-15 03:10:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:27,627 INFO L225 Difference]: With dead ends: 4294 [2019-10-15 03:10:27,627 INFO L226 Difference]: Without dead ends: 2632 [2019-10-15 03:10:27,638 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 03:10:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2019-10-15 03:10:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2615. [2019-10-15 03:10:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2019-10-15 03:10:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3997 transitions. [2019-10-15 03:10:27,803 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3997 transitions. Word has length 123 [2019-10-15 03:10:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:27,804 INFO L462 AbstractCegarLoop]: Abstraction has 2615 states and 3997 transitions. [2019-10-15 03:10:27,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3997 transitions. [2019-10-15 03:10:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:10:27,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:27,808 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:27,809 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash -888024506, now seen corresponding path program 1 times [2019-10-15 03:10:27,809 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:27,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93434000] [2019-10-15 03:10:27,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:27,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:27,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:27,979 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 03:10:27,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93434000] [2019-10-15 03:10:27,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:27,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:27,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352003153] [2019-10-15 03:10:27,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:27,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:27,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:27,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:27,982 INFO L87 Difference]: Start difference. First operand 2615 states and 3997 transitions. Second operand 3 states. [2019-10-15 03:10:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:28,205 INFO L93 Difference]: Finished difference Result 7028 states and 10970 transitions. [2019-10-15 03:10:28,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:28,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-15 03:10:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:28,243 INFO L225 Difference]: With dead ends: 7028 [2019-10-15 03:10:28,243 INFO L226 Difference]: Without dead ends: 4456 [2019-10-15 03:10:28,258 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 03:10:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2019-10-15 03:10:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4438. [2019-10-15 03:10:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4438 states. [2019-10-15 03:10:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 6895 transitions. [2019-10-15 03:10:28,555 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 6895 transitions. Word has length 124 [2019-10-15 03:10:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:28,558 INFO L462 AbstractCegarLoop]: Abstraction has 4438 states and 6895 transitions. [2019-10-15 03:10:28,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 6895 transitions. [2019-10-15 03:10:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:10:28,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:28,565 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:28,574 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1760346703, now seen corresponding path program 1 times [2019-10-15 03:10:28,574 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:28,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64767210] [2019-10-15 03:10:28,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:28,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:28,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:28,805 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 03:10:28,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64767210] [2019-10-15 03:10:28,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:28,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:28,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283297384] [2019-10-15 03:10:28,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:28,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:28,810 INFO L87 Difference]: Start difference. First operand 4438 states and 6895 transitions. Second operand 3 states. [2019-10-15 03:10:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:29,399 INFO L93 Difference]: Finished difference Result 12497 states and 20026 transitions. [2019-10-15 03:10:29,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:29,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-10-15 03:10:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:29,483 INFO L225 Difference]: With dead ends: 12497 [2019-10-15 03:10:29,483 INFO L226 Difference]: Without dead ends: 8104 [2019-10-15 03:10:29,523 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 03:10:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2019-10-15 03:10:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 8085. [2019-10-15 03:10:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8085 states. [2019-10-15 03:10:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 12902 transitions. [2019-10-15 03:10:30,257 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 12902 transitions. Word has length 125 [2019-10-15 03:10:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:30,260 INFO L462 AbstractCegarLoop]: Abstraction has 8085 states and 12902 transitions. [2019-10-15 03:10:30,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 12902 transitions. [2019-10-15 03:10:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:10:30,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:30,268 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:30,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1262440168, now seen corresponding path program 1 times [2019-10-15 03:10:30,269 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:30,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487866378] [2019-10-15 03:10:30,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:30,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:30,477 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 03:10:30,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487866378] [2019-10-15 03:10:30,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:30,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:30,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483738166] [2019-10-15 03:10:30,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:30,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:30,479 INFO L87 Difference]: Start difference. First operand 8085 states and 12902 transitions. Second operand 3 states. [2019-10-15 03:10:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:31,445 INFO L93 Difference]: Finished difference Result 23436 states and 39221 transitions. [2019-10-15 03:10:31,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:31,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-15 03:10:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:31,640 INFO L225 Difference]: With dead ends: 23436 [2019-10-15 03:10:31,640 INFO L226 Difference]: Without dead ends: 15400 [2019-10-15 03:10:31,722 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 03:10:31,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15400 states. [2019-10-15 03:10:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15400 to 15380. [2019-10-15 03:10:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15380 states. [2019-10-15 03:10:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 25645 transitions. [2019-10-15 03:10:32,863 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 25645 transitions. Word has length 126 [2019-10-15 03:10:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:32,866 INFO L462 AbstractCegarLoop]: Abstraction has 15380 states and 25645 transitions. [2019-10-15 03:10:32,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 25645 transitions. [2019-10-15 03:10:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 03:10:32,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:32,871 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:32,871 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash 479556563, now seen corresponding path program 1 times [2019-10-15 03:10:32,872 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:32,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240224578] [2019-10-15 03:10:32,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:32,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:32,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:34,163 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 03:10:34,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240224578] [2019-10-15 03:10:34,163 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:34,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:34,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044785841] [2019-10-15 03:10:34,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:34,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:34,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:34,167 INFO L87 Difference]: Start difference. First operand 15380 states and 25645 transitions. Second operand 3 states. [2019-10-15 03:10:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:34,801 INFO L93 Difference]: Finished difference Result 16313 states and 27498 transitions. [2019-10-15 03:10:34,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:34,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-15 03:10:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:34,952 INFO L225 Difference]: With dead ends: 16313 [2019-10-15 03:10:34,952 INFO L226 Difference]: Without dead ends: 16300 [2019-10-15 03:10:34,972 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 03:10:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16300 states.