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_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:27,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:27,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:27,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:27,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:27,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:27,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:27,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:27,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:27,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:27,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:27,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:27,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:27,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:27,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:27,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:27,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:27,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:27,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:27,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:27,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:27,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:27,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:27,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:27,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:27,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:27,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:27,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:27,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:27,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:27,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:27,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:27,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:27,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:27,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:28,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:28,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:28,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:28,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:28,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:28,006 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 [2019-10-13 23:02:28,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:28,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:28,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:28,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:28,036 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:28,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:28,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:28,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:28,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:28,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:28,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:28,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:28,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:28,040 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:28,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:28,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:28,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:28,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:28,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:28,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:28,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:28,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:28,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:28,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:28,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:28,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:28,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:28,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:28,044 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 [2019-10-13 23:02:28,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:28,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:28,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:28,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:28,432 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:28,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-10-13 23:02:28,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd704a59/9e28a27b00294a7386c51d19d0eec51c/FLAG740a332ab [2019-10-13 23:02:29,136 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:29,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-10-13 23:02:29,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd704a59/9e28a27b00294a7386c51d19d0eec51c/FLAG740a332ab [2019-10-13 23:02:29,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd704a59/9e28a27b00294a7386c51d19d0eec51c [2019-10-13 23:02:29,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:29,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:29,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:29,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:29,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:29,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667357e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29, skipping insertion in model container [2019-10-13 23:02:29,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,398 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:29,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:30,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:30,216 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:30,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:30,440 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:30,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30 WrapperNode [2019-10-13 23:02:30,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:30,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:30,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:30,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (1/1) ... [2019-10-13 23:02:30,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:30,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:30,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:30,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:30,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (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 [2019-10-13 23:02:30,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:30,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:30,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,780 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:30,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:30,785 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:30,785 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:30,787 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:30,788 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:30,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:30,788 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:30,789 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:30,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:30,789 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:30,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:02:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:30,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:02:30,792 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:30,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:30,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:30,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:30,793 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:30,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:30,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:30,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:30,795 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:30,795 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:30,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:30,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:30,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:30,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:30,798 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:30,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:30,799 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:30,799 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:30,799 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:30,799 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:30,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:30,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:30,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:30,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:30,801 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:30,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:30,809 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:02:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:02:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:35,814 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:35,815 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:35,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35 BoogieIcfgContainer [2019-10-13 23:02:35,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:35,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:35,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:35,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:35,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:29" (1/3) ... [2019-10-13 23:02:35,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb058c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:30" (2/3) ... [2019-10-13 23:02:35,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb058c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:35, skipping insertion in model container [2019-10-13 23:02:35,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:35" (3/3) ... [2019-10-13 23:02:35,825 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2019-10-13 23:02:35,835 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:35,844 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:35,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:35,889 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:35,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:35,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:35,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:35,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:35,890 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:35,890 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:35,890 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-10-13 23:02:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:02:35,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:35,951 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:35,953 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash 314312242, now seen corresponding path program 1 times [2019-10-13 23:02:35,973 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:35,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974686965] [2019-10-13 23:02:35,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:36,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974686965] [2019-10-13 23:02:36,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:36,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:02:36,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784934502] [2019-10-13 23:02:36,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:02:36,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:02:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:02:36,851 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-10-13 23:02:36,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,949 INFO L93 Difference]: Finished difference Result 467 states and 699 transitions. [2019-10-13 23:02:36,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:02:36,951 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-10-13 23:02:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:36,980 INFO L225 Difference]: With dead ends: 467 [2019-10-13 23:02:36,981 INFO L226 Difference]: Without dead ends: 433 [2019-10-13 23:02:36,988 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 [2019-10-13 23:02:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-13 23:02:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-10-13 23:02:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-13 23:02:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 648 transitions. [2019-10-13 23:02:37,114 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 648 transitions. Word has length 135 [2019-10-13 23:02:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,117 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 648 transitions. [2019-10-13 23:02:37,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:02:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 648 transitions. [2019-10-13 23:02:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:02:37,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,126 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:37,126 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1290537219, now seen corresponding path program 1 times [2019-10-13 23:02:37,127 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97019929] [2019-10-13 23:02:37,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:37,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97019929] [2019-10-13 23:02:37,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:37,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:37,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197495600] [2019-10-13 23:02:37,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:37,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:37,462 INFO L87 Difference]: Start difference. First operand 433 states and 648 transitions. Second operand 7 states. [2019-10-13 23:02:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,186 INFO L93 Difference]: Finished difference Result 1204 states and 1855 transitions. [2019-10-13 23:02:41,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:41,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-13 23:02:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,195 INFO L225 Difference]: With dead ends: 1204 [2019-10-13 23:02:41,195 INFO L226 Difference]: Without dead ends: 824 [2019-10-13 23:02:41,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-10-13 23:02:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 799. [2019-10-13 23:02:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-13 23:02:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1226 transitions. [2019-10-13 23:02:41,277 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1226 transitions. Word has length 136 [2019-10-13 23:02:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,278 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1226 transitions. [2019-10-13 23:02:41,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1226 transitions. [2019-10-13 23:02:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:02:41,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,284 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:41,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,285 INFO L82 PathProgramCache]: Analyzing trace with hash -153028224, now seen corresponding path program 1 times [2019-10-13 23:02:41,285 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828078939] [2019-10-13 23:02:41,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:41,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828078939] [2019-10-13 23:02:41,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:41,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:02:41,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81259393] [2019-10-13 23:02:41,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:02:41,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:02:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:41,580 INFO L87 Difference]: Start difference. First operand 799 states and 1226 transitions. Second operand 6 states. [2019-10-13 23:02:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:42,228 INFO L93 Difference]: Finished difference Result 838 states and 1282 transitions. [2019-10-13 23:02:42,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:42,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-13 23:02:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:42,237 INFO L225 Difference]: With dead ends: 838 [2019-10-13 23:02:42,237 INFO L226 Difference]: Without dead ends: 821 [2019-10-13 23:02:42,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2019-10-13 23:02:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 803. [2019-10-13 23:02:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-13 23:02:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1230 transitions. [2019-10-13 23:02:42,303 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1230 transitions. Word has length 140 [2019-10-13 23:02:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:42,308 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1230 transitions. [2019-10-13 23:02:42,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:02:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1230 transitions. [2019-10-13 23:02:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:02:42,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:42,316 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:42,316 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash -918915006, now seen corresponding path program 1 times [2019-10-13 23:02:42,317 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:42,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929692679] [2019-10-13 23:02:42,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:42,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929692679] [2019-10-13 23:02:42,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:42,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:02:42,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914125216] [2019-10-13 23:02:42,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:02:42,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:02:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:42,742 INFO L87 Difference]: Start difference. First operand 803 states and 1230 transitions. Second operand 8 states. [2019-10-13 23:02:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:42,824 INFO L93 Difference]: Finished difference Result 824 states and 1256 transitions. [2019-10-13 23:02:42,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:42,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-13 23:02:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:42,832 INFO L225 Difference]: With dead ends: 824 [2019-10-13 23:02:42,832 INFO L226 Difference]: Without dead ends: 807 [2019-10-13 23:02:42,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2019-10-13 23:02:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2019-10-13 23:02:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-13 23:02:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1228 transitions. [2019-10-13 23:02:42,880 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1228 transitions. Word has length 145 [2019-10-13 23:02:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:42,881 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1228 transitions. [2019-10-13 23:02:42,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:02:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1228 transitions. [2019-10-13 23:02:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:02:42,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:42,885 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:42,886 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash 117301949, now seen corresponding path program 1 times [2019-10-13 23:02:42,886 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:42,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248259067] [2019-10-13 23:02:42,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:43,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248259067] [2019-10-13 23:02:43,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840450912] [2019-10-13 23:02:43,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:44,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:02:44,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:44,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:02:44,908 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:45,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:02:45,548 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:45,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-10-13 23:02:45,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138683970] [2019-10-13 23:02:45,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:45,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 23:02:45,551 INFO L87 Difference]: Start difference. First operand 803 states and 1228 transitions. Second operand 7 states. [2019-10-13 23:02:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:45,691 INFO L93 Difference]: Finished difference Result 846 states and 1282 transitions. [2019-10-13 23:02:45,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:45,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:02:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:45,698 INFO L225 Difference]: With dead ends: 846 [2019-10-13 23:02:45,698 INFO L226 Difference]: Without dead ends: 829 [2019-10-13 23:02:45,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:02:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-10-13 23:02:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2019-10-13 23:02:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2019-10-13 23:02:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1240 transitions. [2019-10-13 23:02:45,751 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1240 transitions. Word has length 160 [2019-10-13 23:02:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:45,752 INFO L462 AbstractCegarLoop]: Abstraction has 815 states and 1240 transitions. [2019-10-13 23:02:45,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1240 transitions. [2019-10-13 23:02:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:02:45,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:45,756 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:45,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:45,969 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:45,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1951000831, now seen corresponding path program 1 times [2019-10-13 23:02:45,970 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:45,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123661444] [2019-10-13 23:02:45,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:02:46,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123661444] [2019-10-13 23:02:46,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853154464] [2019-10-13 23:02:46,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:47,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 114 conjunts are in the unsatisfiable core [2019-10-13 23:02:47,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:47,406 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-13 23:02:48,144 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-10-13 23:02:48,432 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-10-13 23:02:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:02:48,654 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:48,810 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-10-13 23:02:49,096 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 12