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_spec13_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:56:03,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:56:03,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:56:03,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:56:03,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:56:03,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:56:03,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:56:03,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:56:03,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:56:03,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:56:03,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:56:03,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:56:03,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:56:03,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:56:03,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:56:03,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:56:03,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:56:03,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:56:03,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:56:03,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:56:03,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:56:03,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:56:03,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:56:03,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:56:03,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:56:03,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:56:03,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:56:03,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:56:03,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:56:03,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:56:03,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:56:03,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:56:03,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:56:03,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:56:03,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:56:03,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:56:03,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:56:03,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:56:03,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:56:03,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:56:03,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:56:03,961 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 [2019-10-07 13:56:03,988 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:56:03,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:56:03,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:56:03,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:56:03,991 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:56:03,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:56:03,991 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:56:03,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:56:03,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:56:03,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:56:03,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:56:03,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:56:03,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:56:03,993 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:56:03,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:56:03,994 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:56:03,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:56:03,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:56:03,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:56:03,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:56:03,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:56:03,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:56:03,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:56:03,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:56:03,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:56:03,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:56:03,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:56:03,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:56:03,996 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 [2019-10-07 13:56:04,302 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:56:04,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:56:04,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:56:04,328 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:56:04,329 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:56:04,329 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-07 13:56:04,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb52bdf3/73e2f3ef81674639ba5b4481469309cc/FLAG23410dfa3 [2019-10-07 13:56:05,031 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:56:05,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-07 13:56:05,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb52bdf3/73e2f3ef81674639ba5b4481469309cc/FLAG23410dfa3 [2019-10-07 13:56:05,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb52bdf3/73e2f3ef81674639ba5b4481469309cc [2019-10-07 13:56:05,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:56:05,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:56:05,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:56:05,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:56:05,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:56:05,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:56:05" (1/1) ... [2019-10-07 13:56:05,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52986215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:05, skipping insertion in model container [2019-10-07 13:56:05,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:56:05" (1/1) ... [2019-10-07 13:56:05,276 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:56:05,362 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:56:06,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:56:06,057 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:56:06,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:56:06,317 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:56:06,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06 WrapperNode [2019-10-07 13:56:06,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:56:06,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:56:06,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:56:06,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:56:06,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (1/1) ... [2019-10-07 13:56:06,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:56:06,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:56:06,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:56:06,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:56:06,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (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 [2019-10-07 13:56:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:56:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:56:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:56:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:56:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:56:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:56:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:56:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:56:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:56:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:56:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:56:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:56:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:56:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 13:56:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:56:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 13:56:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:56:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:56:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:56:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:56:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:56:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:56:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:56:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 13:56:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:56:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:56:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:56:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:56:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-07 13:56:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:56:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:56:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:56:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:56:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:56:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:56:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:56:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:56:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:56:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:56:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:56:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:56:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:56:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:56:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:56:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:56:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:56:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:56:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:56:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:56:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:56:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:56:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:56:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:56:06,611 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:56:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:56:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:56:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:56:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:56:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:56:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:56:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:56:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:56:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:56:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:56:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:56:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:56:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:56:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:56:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:56:06,623 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:56:06,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:56:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:56:06,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:56:06,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:56:06,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:56:06,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:56:10,979 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:56:10,979 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:56:10,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:56:10 BoogieIcfgContainer [2019-10-07 13:56:10,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:56:10,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:56:10,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:56:10,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:56:10,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:56:05" (1/3) ... [2019-10-07 13:56:10,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22123d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:56:10, skipping insertion in model container [2019-10-07 13:56:10,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:56:06" (2/3) ... [2019-10-07 13:56:10,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22123d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:56:10, skipping insertion in model container [2019-10-07 13:56:10,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:56:10" (3/3) ... [2019-10-07 13:56:10,989 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2019-10-07 13:56:10,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:56:11,006 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:56:11,017 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:56:11,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:56:11,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:56:11,051 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:56:11,051 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:56:11,051 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:56:11,051 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:56:11,051 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:56:11,051 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:56:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states. [2019-10-07 13:56:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-07 13:56:11,099 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:11,100 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:56:11,102 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1771794574, now seen corresponding path program 1 times [2019-10-07 13:56:11,118 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:11,118 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:11,118 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:11,119 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:56:11,789 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:11,789 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:11,789 INFO L95 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 [2019-10-07 13:56:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:12,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-07 13:56:12,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:56:12,530 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:56:12,654 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:12,654 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-07 13:56:12,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:56:12,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:56:12,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:56:12,676 INFO L87 Difference]: Start difference. First operand 631 states. Second operand 2 states. [2019-10-07 13:56:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:12,777 INFO L93 Difference]: Finished difference Result 1000 states and 1512 transitions. [2019-10-07 13:56:12,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:56:12,779 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 95 [2019-10-07 13:56:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:12,813 INFO L225 Difference]: With dead ends: 1000 [2019-10-07 13:56:12,813 INFO L226 Difference]: Without dead ends: 508 [2019-10-07 13:56:12,825 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:56:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-07 13:56:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2019-10-07 13:56:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-10-07 13:56:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 752 transitions. [2019-10-07 13:56:12,950 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 752 transitions. Word has length 95 [2019-10-07 13:56:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:12,952 INFO L462 AbstractCegarLoop]: Abstraction has 508 states and 752 transitions. [2019-10-07 13:56:12,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:56:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 752 transitions. [2019-10-07 13:56:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-07 13:56:12,966 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:12,966 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:56:13,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:13,177 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:13,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1084400178, now seen corresponding path program 1 times [2019-10-07 13:56:13,178 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:13,178 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:13,179 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:13,179 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:56:13,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:13,499 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:13,499 INFO L95 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 [2019-10-07 13:56:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:14,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 13:56:14,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:56:14,226 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:14,364 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:56:14,364 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-07 13:56:14,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:56:14,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:56:14,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:14,366 INFO L87 Difference]: Start difference. First operand 508 states and 752 transitions. Second operand 4 states. [2019-10-07 13:56:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:15,306 INFO L93 Difference]: Finished difference Result 1915 states and 2904 transitions. [2019-10-07 13:56:15,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:56:15,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-07 13:56:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:15,318 INFO L225 Difference]: With dead ends: 1915 [2019-10-07 13:56:15,319 INFO L226 Difference]: Without dead ends: 1444 [2019-10-07 13:56:15,322 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2019-10-07 13:56:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1356. [2019-10-07 13:56:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2019-10-07 13:56:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2062 transitions. [2019-10-07 13:56:15,448 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2062 transitions. Word has length 95 [2019-10-07 13:56:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:15,448 INFO L462 AbstractCegarLoop]: Abstraction has 1356 states and 2062 transitions. [2019-10-07 13:56:15,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:56:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2062 transitions. [2019-10-07 13:56:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-07 13:56:15,456 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:15,457 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:15,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:15,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:15,673 INFO L82 PathProgramCache]: Analyzing trace with hash 440506225, now seen corresponding path program 1 times [2019-10-07 13:56:15,674 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:15,674 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:15,674 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:15,674 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 13:56:15,978 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:15,978 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:56:15,978 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:56:15,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:56:15,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:56:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:56:15,980 INFO L87 Difference]: Start difference. First operand 1356 states and 2062 transitions. Second operand 7 states. [2019-10-07 13:56:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:20,188 INFO L93 Difference]: Finished difference Result 4103 states and 6335 transitions. [2019-10-07 13:56:20,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:56:20,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-07 13:56:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:20,215 INFO L225 Difference]: With dead ends: 4103 [2019-10-07 13:56:20,215 INFO L226 Difference]: Without dead ends: 2785 [2019-10-07 13:56:20,223 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:56:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2019-10-07 13:56:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2690. [2019-10-07 13:56:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2690 states. [2019-10-07 13:56:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4134 transitions. [2019-10-07 13:56:20,373 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4134 transitions. Word has length 143 [2019-10-07 13:56:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:20,374 INFO L462 AbstractCegarLoop]: Abstraction has 2690 states and 4134 transitions. [2019-10-07 13:56:20,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:56:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4134 transitions. [2019-10-07 13:56:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-07 13:56:20,380 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:20,380 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:20,380 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1565643477, now seen corresponding path program 1 times [2019-10-07 13:56:20,381 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:20,381 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:20,381 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:20,381 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 13:56:20,619 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:20,619 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:56:20,619 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 13:56:20,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 13:56:20,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 13:56:20,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:56:20,621 INFO L87 Difference]: Start difference. First operand 2690 states and 4134 transitions. Second operand 10 states. [2019-10-07 13:56:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:21,909 INFO L93 Difference]: Finished difference Result 5375 states and 8288 transitions. [2019-10-07 13:56:21,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:56:21,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2019-10-07 13:56:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:21,929 INFO L225 Difference]: With dead ends: 5375 [2019-10-07 13:56:21,929 INFO L226 Difference]: Without dead ends: 2722 [2019-10-07 13:56:21,942 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:56:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2019-10-07 13:56:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2708. [2019-10-07 13:56:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2019-10-07 13:56:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 4114 transitions. [2019-10-07 13:56:22,072 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 4114 transitions. Word has length 146 [2019-10-07 13:56:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:22,073 INFO L462 AbstractCegarLoop]: Abstraction has 2708 states and 4114 transitions. [2019-10-07 13:56:22,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 13:56:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 4114 transitions. [2019-10-07 13:56:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-07 13:56:22,078 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:22,078 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:22,078 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:22,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1838617235, now seen corresponding path program 1 times [2019-10-07 13:56:22,079 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:22,079 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:22,079 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:22,080 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:56:22,245 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:22,245 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:22,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:56:22,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:22,802 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:56:23,031 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:23,032 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:56:23,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:56:23,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:56:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:56:23,033 INFO L87 Difference]: Start difference. First operand 2708 states and 4114 transitions. Second operand 4 states. [2019-10-07 13:56:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:23,153 INFO L93 Difference]: Finished difference Result 5427 states and 8404 transitions. [2019-10-07 13:56:23,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:56:23,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-07 13:56:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:23,175 INFO L225 Difference]: With dead ends: 5427 [2019-10-07 13:56:23,179 INFO L226 Difference]: Without dead ends: 2756 [2019-10-07 13:56:23,194 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2019-10-07 13:56:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2019-10-07 13:56:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2019-10-07 13:56:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4162 transitions. [2019-10-07 13:56:23,329 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4162 transitions. Word has length 147 [2019-10-07 13:56:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:23,331 INFO L462 AbstractCegarLoop]: Abstraction has 2756 states and 4162 transitions. [2019-10-07 13:56:23,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:56:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4162 transitions. [2019-10-07 13:56:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 13:56:23,337 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:23,338 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:23,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:23,546 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 159192644, now seen corresponding path program 1 times [2019-10-07 13:56:23,548 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:23,548 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:23,548 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:23,549 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:23,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:23,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:24,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:56:24,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 13:56:24,381 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:56:24,554 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:56:24,554 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:56:24,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:56:24,556 INFO L87 Difference]: Start difference. First operand 2756 states and 4162 transitions. Second operand 5 states. [2019-10-07 13:56:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:24,711 INFO L93 Difference]: Finished difference Result 5499 states and 8444 transitions. [2019-10-07 13:56:24,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:56:24,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-07 13:56:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:24,737 INFO L225 Difference]: With dead ends: 5499 [2019-10-07 13:56:24,738 INFO L226 Difference]: Without dead ends: 2748 [2019-10-07 13:56:24,756 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:56:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2019-10-07 13:56:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2748. [2019-10-07 13:56:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2748 states. [2019-10-07 13:56:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 4130 transitions. [2019-10-07 13:56:24,963 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 4130 transitions. Word has length 149 [2019-10-07 13:56:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:24,964 INFO L462 AbstractCegarLoop]: Abstraction has 2748 states and 4130 transitions. [2019-10-07 13:56:24,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 4130 transitions. [2019-10-07 13:56:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-07 13:56:24,969 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:24,970 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:25,179 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:25,181 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash 546800277, now seen corresponding path program 1 times [2019-10-07 13:56:25,182 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:25,183 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:25,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:25,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:56:25,360 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:25,360 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:26,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 3223 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:26,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:26,177 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:26,403 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:26,404 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:56:26,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:26,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:26,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:56:26,405 INFO L87 Difference]: Start difference. First operand 2748 states and 4130 transitions. Second operand 5 states. [2019-10-07 13:56:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:27,936 INFO L93 Difference]: Finished difference Result 6956 states and 10897 transitions. [2019-10-07 13:56:27,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:56:27,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-07 13:56:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:27,977 INFO L225 Difference]: With dead ends: 6956 [2019-10-07 13:56:27,978 INFO L226 Difference]: Without dead ends: 4245 [2019-10-07 13:56:28,003 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:56:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2019-10-07 13:56:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 4184. [2019-10-07 13:56:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2019-10-07 13:56:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 6343 transitions. [2019-10-07 13:56:28,246 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 6343 transitions. Word has length 150 [2019-10-07 13:56:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:28,246 INFO L462 AbstractCegarLoop]: Abstraction has 4184 states and 6343 transitions. [2019-10-07 13:56:28,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 6343 transitions. [2019-10-07 13:56:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-07 13:56:28,252 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:28,252 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:28,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:28,461 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1184688602, now seen corresponding path program 1 times [2019-10-07 13:56:28,462 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:28,462 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:28,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:28,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:28,647 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:28,647 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:29,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:56:29,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:56:29,649 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:30,059 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:30,062 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:56:30,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:56:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:56:30,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:56:30,064 INFO L87 Difference]: Start difference. First operand 4184 states and 6343 transitions. Second operand 7 states. [2019-10-07 13:56:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:31,828 INFO L93 Difference]: Finished difference Result 9473 states and 14880 transitions. [2019-10-07 13:56:31,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:56:31,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2019-10-07 13:56:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:31,871 INFO L225 Difference]: With dead ends: 9473 [2019-10-07 13:56:31,871 INFO L226 Difference]: Without dead ends: 5326 [2019-10-07 13:56:31,895 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 291 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:56:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2019-10-07 13:56:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 5280. [2019-10-07 13:56:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5280 states. [2019-10-07 13:56:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 8354 transitions. [2019-10-07 13:56:32,192 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 8354 transitions. Word has length 151 [2019-10-07 13:56:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:32,193 INFO L462 AbstractCegarLoop]: Abstraction has 5280 states and 8354 transitions. [2019-10-07 13:56:32,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:56:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 8354 transitions. [2019-10-07 13:56:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-07 13:56:32,197 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:32,197 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:32,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:32,406 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash -19027897, now seen corresponding path program 1 times [2019-10-07 13:56:32,406 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:32,406 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:32,407 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:32,407 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:32,569 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:32,569 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:33,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:56:33,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:56:33,409 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:33,624 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:56:33,624 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:56:33,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:33,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:33,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:56:33,629 INFO L87 Difference]: Start difference. First operand 5280 states and 8354 transitions. Second operand 5 states. [2019-10-07 13:56:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:33,904 INFO L93 Difference]: Finished difference Result 10642 states and 17417 transitions. [2019-10-07 13:56:33,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:56:33,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-07 13:56:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:33,961 INFO L225 Difference]: With dead ends: 10642 [2019-10-07 13:56:33,961 INFO L226 Difference]: Without dead ends: 5412 [2019-10-07 13:56:33,995 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:56:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2019-10-07 13:56:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 5332. [2019-10-07 13:56:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2019-10-07 13:56:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 8406 transitions. [2019-10-07 13:56:34,355 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 8406 transitions. Word has length 151 [2019-10-07 13:56:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:34,358 INFO L462 AbstractCegarLoop]: Abstraction has 5332 states and 8406 transitions. [2019-10-07 13:56:34,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 8406 transitions. [2019-10-07 13:56:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-07 13:56:34,364 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:34,365 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:34,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:34,582 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash 665583345, now seen corresponding path program 1 times [2019-10-07 13:56:34,583 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:34,583 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:34,583 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:34,584 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:34,763 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:34,763 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:35,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 3230 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:35,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:56:35,408 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:35,674 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:35,674 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2019-10-07 13:56:35,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:56:35,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:56:35,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:56:35,675 INFO L87 Difference]: Start difference. First operand 5332 states and 8406 transitions. Second operand 4 states. [2019-10-07 13:56:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:36,127 INFO L93 Difference]: Finished difference Result 10894 states and 17823 transitions. [2019-10-07 13:56:36,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:56:36,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-07 13:56:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:36,171 INFO L225 Difference]: With dead ends: 10894 [2019-10-07 13:56:36,171 INFO L226 Difference]: Without dead ends: 5613 [2019-10-07 13:56:36,191 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:56:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5613 states. [2019-10-07 13:56:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5613 to 5547. [2019-10-07 13:56:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2019-10-07 13:56:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 8757 transitions. [2019-10-07 13:56:36,468 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 8757 transitions. Word has length 153 [2019-10-07 13:56:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:36,469 INFO L462 AbstractCegarLoop]: Abstraction has 5547 states and 8757 transitions. [2019-10-07 13:56:36,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:56:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 8757 transitions. [2019-10-07 13:56:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:56:36,474 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:36,474 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:36,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:36,682 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:36,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1847181209, now seen corresponding path program 1 times [2019-10-07 13:56:36,682 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:36,682 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:36,682 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:36,682 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:36,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:36,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:37,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:37,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:37,512 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:37,719 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:37,719 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 11 [2019-10-07 13:56:37,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:56:37,720 INFO L87 Difference]: Start difference. First operand 5547 states and 8757 transitions. Second operand 5 states. [2019-10-07 13:56:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:39,639 INFO L93 Difference]: Finished difference Result 13327 states and 22899 transitions. [2019-10-07 13:56:39,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:56:39,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2019-10-07 13:56:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:39,686 INFO L225 Difference]: With dead ends: 13327 [2019-10-07 13:56:39,686 INFO L226 Difference]: Without dead ends: 9013 [2019-10-07 13:56:39,707 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 308 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:56:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9013 states. [2019-10-07 13:56:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9013 to 8800. [2019-10-07 13:56:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8800 states. [2019-10-07 13:56:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8800 states to 8800 states and 14676 transitions. [2019-10-07 13:56:40,151 INFO L78 Accepts]: Start accepts. Automaton has 8800 states and 14676 transitions. Word has length 155 [2019-10-07 13:56:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:40,152 INFO L462 AbstractCegarLoop]: Abstraction has 8800 states and 14676 transitions. [2019-10-07 13:56:40,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8800 states and 14676 transitions. [2019-10-07 13:56:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:56:40,156 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:40,157 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:40,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:40,364 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash 182480977, now seen corresponding path program 1 times [2019-10-07 13:56:40,365 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:40,365 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:40,365 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:40,365 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:40,520 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:40,521 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:41,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 3231 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:56:41,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:56:41,178 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:41,356 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-07 13:56:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:41,460 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:41,460 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 13:56:41,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:56:41,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:56:41,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:41,462 INFO L87 Difference]: Start difference. First operand 8800 states and 14676 transitions. Second operand 4 states. [2019-10-07 13:56:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:41,687 INFO L93 Difference]: Finished difference Result 17239 states and 30110 transitions. [2019-10-07 13:56:41,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:56:41,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-07 13:56:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:41,729 INFO L225 Difference]: With dead ends: 17239 [2019-10-07 13:56:41,729 INFO L226 Difference]: Without dead ends: 8490 [2019-10-07 13:56:41,768 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2019-10-07 13:56:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 8207. [2019-10-07 13:56:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8207 states. [2019-10-07 13:56:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8207 states to 8207 states and 13255 transitions. [2019-10-07 13:56:42,174 INFO L78 Accepts]: Start accepts. Automaton has 8207 states and 13255 transitions. Word has length 155 [2019-10-07 13:56:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:42,175 INFO L462 AbstractCegarLoop]: Abstraction has 8207 states and 13255 transitions. [2019-10-07 13:56:42,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:56:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 8207 states and 13255 transitions. [2019-10-07 13:56:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 13:56:42,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:42,180 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:42,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:42,388 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash 512976687, now seen corresponding path program 1 times [2019-10-07 13:56:42,390 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:42,390 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:42,390 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:42,390 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 13:56:42,555 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:42,556 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:43,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:43,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:56:43,256 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:43,397 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:56:43,397 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 13:56:43,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:56:43,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:56:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:56:43,398 INFO L87 Difference]: Start difference. First operand 8207 states and 13255 transitions. Second operand 4 states. [2019-10-07 13:56:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:43,790 INFO L93 Difference]: Finished difference Result 16729 states and 28855 transitions. [2019-10-07 13:56:43,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:56:43,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-07 13:56:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:43,833 INFO L225 Difference]: With dead ends: 16729 [2019-10-07 13:56:43,834 INFO L226 Difference]: Without dead ends: 8573 [2019-10-07 13:56:43,868 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:56:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8573 states. [2019-10-07 13:56:44,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8573 to 8384. [2019-10-07 13:56:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8384 states. [2019-10-07 13:56:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8384 states to 8384 states and 13522 transitions. [2019-10-07 13:56:44,271 INFO L78 Accepts]: Start accepts. Automaton has 8384 states and 13522 transitions. Word has length 158 [2019-10-07 13:56:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:44,271 INFO L462 AbstractCegarLoop]: Abstraction has 8384 states and 13522 transitions. [2019-10-07 13:56:44,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:56:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8384 states and 13522 transitions. [2019-10-07 13:56:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-07 13:56:44,277 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:44,277 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:44,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:44,487 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1506359553, now seen corresponding path program 1 times [2019-10-07 13:56:44,490 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:44,490 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:44,490 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:44,490 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:44,655 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:44,655 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:45,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 3244 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:45,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:45,338 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:45,536 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:45,536 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:56:45,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:45,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:45,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:56:45,537 INFO L87 Difference]: Start difference. First operand 8384 states and 13522 transitions. Second operand 5 states. [2019-10-07 13:56:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:47,021 INFO L93 Difference]: Finished difference Result 19180 states and 33212 transitions. [2019-10-07 13:56:47,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:56:47,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2019-10-07 13:56:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:47,073 INFO L225 Difference]: With dead ends: 19180 [2019-10-07 13:56:47,074 INFO L226 Difference]: Without dead ends: 12203 [2019-10-07 13:56:47,108 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:56:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2019-10-07 13:56:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 12053. [2019-10-07 13:56:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12053 states. [2019-10-07 13:56:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12053 states to 12053 states and 20444 transitions. [2019-10-07 13:56:47,625 INFO L78 Accepts]: Start accepts. Automaton has 12053 states and 20444 transitions. Word has length 164 [2019-10-07 13:56:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:47,625 INFO L462 AbstractCegarLoop]: Abstraction has 12053 states and 20444 transitions. [2019-10-07 13:56:47,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12053 states and 20444 transitions. [2019-10-07 13:56:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 13:56:47,631 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:47,632 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:47,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:47,840 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -176105403, now seen corresponding path program 1 times [2019-10-07 13:56:47,841 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:47,841 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:47,842 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:47,842 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:47,985 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:47,985 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:48,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:56:48,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:48,701 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:48,906 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:48,906 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 11 [2019-10-07 13:56:48,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:56:48,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:56:48,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:56:48,907 INFO L87 Difference]: Start difference. First operand 12053 states and 20444 transitions. Second operand 5 states. [2019-10-07 13:56:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:50,558 INFO L93 Difference]: Finished difference Result 26544 states and 47846 transitions. [2019-10-07 13:56:50,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:56:50,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2019-10-07 13:56:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:50,645 INFO L225 Difference]: With dead ends: 26544 [2019-10-07 13:56:50,646 INFO L226 Difference]: Without dead ends: 15904 [2019-10-07 13:56:50,703 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:56:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15904 states. [2019-10-07 13:56:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15904 to 15536. [2019-10-07 13:56:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15536 states. [2019-10-07 13:56:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15536 states to 15536 states and 27660 transitions. [2019-10-07 13:56:51,359 INFO L78 Accepts]: Start accepts. Automaton has 15536 states and 27660 transitions. Word has length 165 [2019-10-07 13:56:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:51,360 INFO L462 AbstractCegarLoop]: Abstraction has 15536 states and 27660 transitions. [2019-10-07 13:56:51,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:56:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 15536 states and 27660 transitions. [2019-10-07 13:56:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 13:56:51,365 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:51,365 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:51,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:51,574 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:51,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1620099657, now seen corresponding path program 1 times [2019-10-07 13:56:51,574 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:51,574 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:51,574 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:51,575 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:56:51,723 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:51,724 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:52,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:56:52,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:56:52,635 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:52,761 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:56:52,761 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 5 [2019-10-07 13:56:52,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:56:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:56:52,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:56:52,763 INFO L87 Difference]: Start difference. First operand 15536 states and 27660 transitions. Second operand 3 states. [2019-10-07 13:56:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:53,702 INFO L93 Difference]: Finished difference Result 43951 states and 93738 transitions. [2019-10-07 13:56:53,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:56:53,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-07 13:56:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:53,851 INFO L225 Difference]: With dead ends: 43951 [2019-10-07 13:56:53,852 INFO L226 Difference]: Without dead ends: 28473 [2019-10-07 13:56:53,976 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:56:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28473 states. [2019-10-07 13:56:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28473 to 25212. [2019-10-07 13:56:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25212 states. [2019-10-07 13:56:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25212 states to 25212 states and 52070 transitions. [2019-10-07 13:56:56,673 INFO L78 Accepts]: Start accepts. Automaton has 25212 states and 52070 transitions. Word has length 166 [2019-10-07 13:56:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:56,673 INFO L462 AbstractCegarLoop]: Abstraction has 25212 states and 52070 transitions. [2019-10-07 13:56:56,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:56:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 25212 states and 52070 transitions. [2019-10-07 13:56:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 13:56:56,680 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:56,680 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:56:56,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:56,889 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:56,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:56,889 INFO L82 PathProgramCache]: Analyzing trace with hash -866860745, now seen corresponding path program 1 times [2019-10-07 13:56:56,889 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:56,889 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:56,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:56,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 13:56:57,020 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:57,020 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:57,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 3244 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:56:57,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:56:57,756 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:56:57,925 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:56:57,955 INFO L162 IcfgInterpreter]: Started Sifa with 135 locations of interest [2019-10-07 13:56:57,955 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:56:57,961 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:56:57,968 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:56:57,968 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:57:47,683 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 769 [2019-10-07 13:57:53,087 WARN L191 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 13:57:53,403 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 13:57:53,627 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 13:57:53,853 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 13:57:55,381 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:55,892 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:56,370 WARN L191 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:56,898 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:57,790 WARN L191 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 1050 DAG size of output: 1048 [2019-10-07 13:57:58,250 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:58,777 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:59,260 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:57:59,725 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:58:00,232 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 13:58:00,251 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 388 for LOIs [2019-10-07 13:58:00,454 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 737 [2019-10-07 13:58:00,560 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 737 [2019-10-07 13:58:00,899 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 923 [2019-10-07 13:58:00,901 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1094 for LOIs [2019-10-07 13:58:01,392 WARN L191 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:01,849 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:01,965 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:02,704 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:03,169 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:03,625 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:03,873 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:04,750 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:05,225 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:05,674 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:05,880 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:06,698 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:07,548 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1094 [2019-10-07 13:58:07,996 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:08,120 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:08,860 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:09,336 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:09,784 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:09,899 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:10,635 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:11,082 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:11,531 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:11,670 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:12,421 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:12,868 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:13,320 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:13,432 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:14,169 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:14,625 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:15,076 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:15,188 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:15,925 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:16,370 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:16,817 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:16,935 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:17,694 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:18,142 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:18,589 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:18,701 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:19,428 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:19,884 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:20,334 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:20,447 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:21,187 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:21,636 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:22,084 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:22,198 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:22,952 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:23,399 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:23,847 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 13:58:23,959 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:24,708 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:25,635 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:26,372 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:26,493 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:27,232 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:28,780 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:58:29,521 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:29,643 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:30,388 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:31,138 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:31,884 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:31,995 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:32,730 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:33,513 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:34,271 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:34,392 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:35,142 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:36,308 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:37,048 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:37,173 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:37,922 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:39,188 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 13:58:39,927 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:40,052 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:40,809 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:41,557 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:42,292 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:42,408 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:43,164 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:43,915 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:44,662 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:44,786 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:45,535 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:58:46,306 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:47,046 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:47,163 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:47,910 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:58:49,190 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 13:58:49,935 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:50,064 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:50,822 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:58:51,569 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:52,327 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:58:52,441 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:58:53,186 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:58:54,553 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:58:55,300 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:55,460 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:56,195 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:57,534 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:58:58,291 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:58,411 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:58:59,145 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:59,881 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:00,625 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:00,739 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:01,487 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:02,308 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:03,048 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:03,170 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:03,921 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:04,688 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:05,434 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:05,555 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:06,302 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:07,042 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:07,793 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:07,906 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:08,657 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:09,934 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 13:59:10,695 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:10,818 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:11,570 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:12,840 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 13:59:13,580 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:13,700 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:14,448 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:59:15,813 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:16,562 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:16,680 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:17,416 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:18,746 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:19,493 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:19,617 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:20,356 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:21,093 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:21,833 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:21,945 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:22,686 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:24,048 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:24,786 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:24,904 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:25,640 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:26,996 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:27,733 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:27,850 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:28,582 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:29,328 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:30,069 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:30,181 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:30,918 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:32,212 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 13:59:32,950 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:33,069 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:33,814 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:34,572 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:35,321 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:35,442 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:36,182 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:37,445 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 13:59:38,189 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:38,304 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:39,037 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:40,296 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 13:59:41,033 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:41,168 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:41,929 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:43,192 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 13:59:43,934 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:44,055 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:44,805 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 13:59:46,155 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:46,891 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:47,008 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:47,745 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:49,111 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:49,851 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:49,968 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:50,700 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:51,439 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:52,182 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:52,295 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 13:59:53,032 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:53,804 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:54,554 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:54,672 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:55,415 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:56,171 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:56,921 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:57,040 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 13:59:57,790 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:58,532 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:59,272 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 13:59:59,385 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:00,128 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:01,419 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1260 [2019-10-07 14:00:02,248 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:02,380 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:03,119 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:04,470 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:00:05,221 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:05,340 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:06,087 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:07,444 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:00:08,206 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:08,326 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:09,070 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:10,413 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:00:11,159 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:11,405 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:12,252 WARN L191 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:00:13,630 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:14,377 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:14,499 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:15,241 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:16,587 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:17,346 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:17,465 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:18,227 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:18,966 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:19,711 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:19,824 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:20,574 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:21,892 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:00:22,778 WARN L191 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:00:22,903 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:23,655 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:25,019 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:00:25,769 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:00:25,905 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:26,659 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:28,029 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:28,785 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:28,909 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:29,656 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:31,192 WARN L191 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:31,934 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:32,051 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:32,794 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:34,174 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:34,926 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:35,044 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:35,786 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:37,200 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:37,947 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:38,099 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:38,861 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:39,602 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:40,356 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:40,468 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:41,210 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:42,605 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:00:43,365 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:43,485 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:44,238 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:45,009 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:45,762 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:45,887 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:46,640 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:47,395 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:48,141 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:48,259 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:49,018 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:50,289 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1260 [2019-10-07 14:00:51,045 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:51,173 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:00:51,932 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:00:51,938 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1118 for LOIs [2019-10-07 14:00:52,421 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1118 [2019-10-07 14:00:52,907 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 1118 [2019-10-07 14:00:53,020 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:53,776 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:53,788 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1072 for LOIs [2019-10-07 14:00:54,222 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1072 [2019-10-07 14:00:54,645 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1072 [2019-10-07 14:00:54,759 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:00:55,511 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:55,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:55,766 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:00:55,774 INFO L168 Benchmark]: Toolchain (without parser) took 290517.92 ms. Allocated memory was 137.9 MB in the beginning and 3.1 GB in the end (delta: 3.0 GB). Free memory was 99.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 651.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,774 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1057.76 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 139.5 MB in the end (delta: -40.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,774 INFO L168 Benchmark]: Boogie Preprocessor took 215.43 ms. Allocated memory is still 202.4 MB. Free memory was 139.5 MB in the beginning and 130.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,775 INFO L168 Benchmark]: RCFGBuilder took 4446.65 ms. Allocated memory was 202.4 MB in the beginning and 308.3 MB in the end (delta: 105.9 MB). Free memory was 130.2 MB in the beginning and 235.3 MB in the end (delta: -105.1 MB). Peak memory consumption was 164.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,775 INFO L168 Benchmark]: TraceAbstraction took 284789.96 ms. Allocated memory was 308.3 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 235.3 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 617.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:55,777 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1057.76 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 139.5 MB in the end (delta: -40.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.43 ms. Allocated memory is still 202.4 MB. Free memory was 139.5 MB in the beginning and 130.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4446.65 ms. Allocated memory was 202.4 MB in the beginning and 308.3 MB in the end (delta: 105.9 MB). Free memory was 130.2 MB in the beginning and 235.3 MB in the end (delta: -105.1 MB). Peak memory consumption was 164.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 284789.96 ms. Allocated memory was 308.3 MB in the beginning and 3.1 GB in the end (delta: 2.8 GB). Free memory was 235.3 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 617.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...