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_spec2_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:17:39,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:17:39,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:17:39,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:17:39,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:17:39,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:17:39,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:17:39,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:17:39,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:17:39,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:17:39,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:17:39,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:17:39,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:17:39,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:17:39,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:17:39,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:17:39,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:17:39,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:17:39,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:17:39,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:17:39,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:17:39,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:17:39,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:17:39,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:17:39,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:17:39,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:17:39,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:17:39,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:17:39,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:17:39,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:17:39,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:17:39,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:17:39,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:17:39,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:17:39,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:17:39,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:17:39,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:17:39,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:17:39,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:17:39,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:17:39,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:17:39,818 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 14:17:39,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:17:39,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:17:39,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:17:39,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:17:39,835 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:17:39,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:17:39,835 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:17:39,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:17:39,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:17:39,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:17:39,837 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:17:39,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:17:39,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:17:39,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:17:39,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:17:39,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:17:39,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:17:39,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:17:39,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:17:39,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:17:39,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:17:39,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:17:39,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:17:39,842 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 14:17:40,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:17:40,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:17:40,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:17:40,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:17:40,144 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:17:40,145 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-07 14:17:40,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74a9d64/ca7562dc647e41cd875dcb23f73580d0/FLAGab385113b [2019-10-07 14:17:40,891 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:17:40,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-07 14:17:40,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74a9d64/ca7562dc647e41cd875dcb23f73580d0/FLAGab385113b [2019-10-07 14:17:41,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74a9d64/ca7562dc647e41cd875dcb23f73580d0 [2019-10-07 14:17:41,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:17:41,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:17:41,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:17:41,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:17:41,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:17:41,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:17:41" (1/1) ... [2019-10-07 14:17:41,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d974c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:41, skipping insertion in model container [2019-10-07 14:17:41,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:17:41" (1/1) ... [2019-10-07 14:17:41,075 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:17:41,156 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:17:41,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:17:41,812 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:17:41,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:17:42,050 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:17:42,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42 WrapperNode [2019-10-07 14:17:42,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:17:42,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:17:42,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:17:42,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:17:42,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (1/1) ... [2019-10-07 14:17:42,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:17:42,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:17:42,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:17:42,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:17:42,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (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 14:17:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:17:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:17:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:17:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:17:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:17:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:17:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:17:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:17:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:17:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:17:42,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:17:42,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:17:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:17:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:17:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:17:42,337 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:17:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:17:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:17:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:17:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:17:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:17:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:17:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:17:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:17:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:17:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:17:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:17:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:17:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:17:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:17:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:17:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:17:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:17:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:17:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:17:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:17:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:17:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:17:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:17:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:17:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:17:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:17:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:17:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:17:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:17:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:17:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:17:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:17:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:17:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:17:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:17:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:17:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:17:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:17:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:17:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:17:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:17:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:17:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:17:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:17:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:17:42,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:17:42,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:17:42,352 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:17:42,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:17:42,352 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:17:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:17:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:17:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:17:42,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:17:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:17:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:17:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:17:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:17:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:17:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:17:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:17:42,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:17:42,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:17:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:17:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:17:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:17:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:17:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:17:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:17:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:17:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:17:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:17:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:17:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:17:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:17:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:17:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:17:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:17:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:17:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:17:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:17:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:17:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:17:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:17:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:17:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:17:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:17:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:17:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:17:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:17:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:17:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:17:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:17:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:17:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:17:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:17:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:17:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:17:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:17:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:17:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:17:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:17:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:17:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:17:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:17:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:17:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:17:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:17:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:17:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:17:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:17:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:17:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:17:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:17:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:17:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:17:47,116 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:17:47,116 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:17:47,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:17:47 BoogieIcfgContainer [2019-10-07 14:17:47,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:17:47,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:17:47,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:17:47,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:17:47,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:17:41" (1/3) ... [2019-10-07 14:17:47,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf8173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:17:47, skipping insertion in model container [2019-10-07 14:17:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:42" (2/3) ... [2019-10-07 14:17:47,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf8173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:17:47, skipping insertion in model container [2019-10-07 14:17:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:17:47" (3/3) ... [2019-10-07 14:17:47,130 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2019-10-07 14:17:47,140 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:17:47,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:17:47,164 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:17:47,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:17:47,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:17:47,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:17:47,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:17:47,216 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:17:47,216 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:17:47,216 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:17:47,216 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:17:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-10-07 14:17:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 14:17:47,282 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:47,283 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:47,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:47,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1246126467, now seen corresponding path program 1 times [2019-10-07 14:17:47,299 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:47,299 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:47,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:47,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:48,089 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:48,089 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:48,089 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:17:48,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:17:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:17:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:17:48,112 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 9 states. [2019-10-07 14:17:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:53,338 INFO L93 Difference]: Finished difference Result 1394 states and 2144 transitions. [2019-10-07 14:17:53,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-07 14:17:53,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-07 14:17:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:53,371 INFO L225 Difference]: With dead ends: 1394 [2019-10-07 14:17:53,372 INFO L226 Difference]: Without dead ends: 975 [2019-10-07 14:17:53,383 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:17:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-07 14:17:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 943. [2019-10-07 14:17:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-07 14:17:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1446 transitions. [2019-10-07 14:17:53,550 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1446 transitions. Word has length 106 [2019-10-07 14:17:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:53,551 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1446 transitions. [2019-10-07 14:17:53,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:17:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1446 transitions. [2019-10-07 14:17:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:17:53,567 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:53,568 INFO L385 BasicCegarLoop]: trace histogram [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 14:17:53,568 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:53,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1358788791, now seen corresponding path program 1 times [2019-10-07 14:17:53,570 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:53,570 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:53,570 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:53,571 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:53,815 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:53,815 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:53,816 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:17:53,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:17:53,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:17:53,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:53,819 INFO L87 Difference]: Start difference. First operand 943 states and 1446 transitions. Second operand 7 states. [2019-10-07 14:17:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:53,945 INFO L93 Difference]: Finished difference Result 1509 states and 2328 transitions. [2019-10-07 14:17:53,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:17:53,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-07 14:17:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:53,962 INFO L225 Difference]: With dead ends: 1509 [2019-10-07 14:17:53,962 INFO L226 Difference]: Without dead ends: 980 [2019-10-07 14:17:53,966 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2019-10-07 14:17:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 964. [2019-10-07 14:17:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-07 14:17:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1476 transitions. [2019-10-07 14:17:54,147 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1476 transitions. Word has length 112 [2019-10-07 14:17:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:54,148 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1476 transitions. [2019-10-07 14:17:54,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:17:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1476 transitions. [2019-10-07 14:17:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:17:54,159 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:54,159 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:54,159 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:54,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1366611604, now seen corresponding path program 1 times [2019-10-07 14:17:54,162 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:54,162 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:54,162 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:54,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:54,423 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:54,424 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:54,424 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:17:54,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:17:54,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:17:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:54,428 INFO L87 Difference]: Start difference. First operand 964 states and 1476 transitions. Second operand 7 states. [2019-10-07 14:17:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:54,523 INFO L93 Difference]: Finished difference Result 1538 states and 2366 transitions. [2019-10-07 14:17:54,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:17:54,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-07 14:17:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:54,533 INFO L225 Difference]: With dead ends: 1538 [2019-10-07 14:17:54,533 INFO L226 Difference]: Without dead ends: 995 [2019-10-07 14:17:54,537 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-07 14:17:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2019-10-07 14:17:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-07 14:17:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1479 transitions. [2019-10-07 14:17:54,611 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1479 transitions. Word has length 111 [2019-10-07 14:17:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:54,613 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1479 transitions. [2019-10-07 14:17:54,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:17:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1479 transitions. [2019-10-07 14:17:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:17:54,619 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:54,619 INFO L385 BasicCegarLoop]: trace histogram [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 14:17:54,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:54,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:54,619 INFO L82 PathProgramCache]: Analyzing trace with hash 107832681, now seen corresponding path program 1 times [2019-10-07 14:17:54,620 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:54,620 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:54,620 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:54,620 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:54,845 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:54,845 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:54,845 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:17:54,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:17:54,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:17:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:54,847 INFO L87 Difference]: Start difference. First operand 967 states and 1479 transitions. Second operand 7 states. [2019-10-07 14:17:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:54,968 INFO L93 Difference]: Finished difference Result 1543 states and 2371 transitions. [2019-10-07 14:17:54,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:17:54,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-07 14:17:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:54,980 INFO L225 Difference]: With dead ends: 1543 [2019-10-07 14:17:54,980 INFO L226 Difference]: Without dead ends: 998 [2019-10-07 14:17:54,984 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2019-10-07 14:17:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 970. [2019-10-07 14:17:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-07 14:17:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1482 transitions. [2019-10-07 14:17:55,048 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1482 transitions. Word has length 112 [2019-10-07 14:17:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:55,049 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1482 transitions. [2019-10-07 14:17:55,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:17:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1482 transitions. [2019-10-07 14:17:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 14:17:55,053 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:55,053 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:55,053 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash 906333268, now seen corresponding path program 1 times [2019-10-07 14:17:55,054 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:55,054 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:55,054 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:55,055 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:55,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:55,288 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:55,288 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:17:55,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:17:55,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:17:55,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:17:55,290 INFO L87 Difference]: Start difference. First operand 970 states and 1482 transitions. Second operand 7 states. [2019-10-07 14:17:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:58,889 INFO L93 Difference]: Finished difference Result 2080 states and 3197 transitions. [2019-10-07 14:17:58,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:17:58,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-07 14:17:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:58,903 INFO L225 Difference]: With dead ends: 2080 [2019-10-07 14:17:58,903 INFO L226 Difference]: Without dead ends: 1408 [2019-10-07 14:17:58,911 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:17:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2019-10-07 14:17:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1358. [2019-10-07 14:17:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-07 14:17:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2036 transitions. [2019-10-07 14:17:59,015 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2036 transitions. Word has length 115 [2019-10-07 14:17:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:59,016 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 2036 transitions. [2019-10-07 14:17:59,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:17:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2036 transitions. [2019-10-07 14:17:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:17:59,023 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:59,023 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:59,024 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:59,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1509541957, now seen corresponding path program 1 times [2019-10-07 14:17:59,025 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:59,026 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:59,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:59,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:59,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:17:59,220 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:59,220 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:59,221 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:17:59,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:17:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:17:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:17:59,222 INFO L87 Difference]: Start difference. First operand 1358 states and 2036 transitions. Second operand 6 states. [2019-10-07 14:18:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:03,166 INFO L93 Difference]: Finished difference Result 5421 states and 8451 transitions. [2019-10-07 14:18:03,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 14:18:03,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-07 14:18:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:03,203 INFO L225 Difference]: With dead ends: 5421 [2019-10-07 14:18:03,203 INFO L226 Difference]: Without dead ends: 4106 [2019-10-07 14:18:03,213 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:18:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2019-10-07 14:18:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 3809. [2019-10-07 14:18:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3809 states. [2019-10-07 14:18:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5853 transitions. [2019-10-07 14:18:03,450 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5853 transitions. Word has length 119 [2019-10-07 14:18:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:03,451 INFO L462 AbstractCegarLoop]: Abstraction has 3809 states and 5853 transitions. [2019-10-07 14:18:03,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:18:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5853 transitions. [2019-10-07 14:18:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:18:03,454 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:03,454 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:03,455 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:03,455 INFO L82 PathProgramCache]: Analyzing trace with hash -574764340, now seen corresponding path program 1 times [2019-10-07 14:18:03,455 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:03,455 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:03,456 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:03,456 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:18:03,595 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:03,595 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:03,596 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:03,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:03,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:03,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:03,598 INFO L87 Difference]: Start difference. First operand 3809 states and 5853 transitions. Second operand 4 states. [2019-10-07 14:18:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:03,880 INFO L93 Difference]: Finished difference Result 7325 states and 11680 transitions. [2019-10-07 14:18:03,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:18:03,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-07 14:18:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:03,917 INFO L225 Difference]: With dead ends: 7325 [2019-10-07 14:18:03,917 INFO L226 Difference]: Without dead ends: 4241 [2019-10-07 14:18:03,942 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2019-10-07 14:18:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 4241. [2019-10-07 14:18:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2019-10-07 14:18:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6597 transitions. [2019-10-07 14:18:04,260 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6597 transitions. Word has length 121 [2019-10-07 14:18:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:04,262 INFO L462 AbstractCegarLoop]: Abstraction has 4241 states and 6597 transitions. [2019-10-07 14:18:04,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6597 transitions. [2019-10-07 14:18:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:18:04,265 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:04,266 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:04,266 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash 961395397, now seen corresponding path program 1 times [2019-10-07 14:18:04,266 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:04,267 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:04,267 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:04,267 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:18:04,439 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:04,439 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:04,439 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:18:04,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:18:04,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:18:04,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:18:04,440 INFO L87 Difference]: Start difference. First operand 4241 states and 6597 transitions. Second operand 7 states. [2019-10-07 14:18:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:08,363 INFO L93 Difference]: Finished difference Result 7627 states and 11925 transitions. [2019-10-07 14:18:08,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:18:08,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-07 14:18:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:08,425 INFO L225 Difference]: With dead ends: 7627 [2019-10-07 14:18:08,425 INFO L226 Difference]: Without dead ends: 4411 [2019-10-07 14:18:08,462 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:18:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2019-10-07 14:18:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4325. [2019-10-07 14:18:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4325 states. [2019-10-07 14:18:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 6703 transitions. [2019-10-07 14:18:08,800 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 6703 transitions. Word has length 120 [2019-10-07 14:18:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:08,801 INFO L462 AbstractCegarLoop]: Abstraction has 4325 states and 6703 transitions. [2019-10-07 14:18:08,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:18:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 6703 transitions. [2019-10-07 14:18:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:18:08,807 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:08,807 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:08,808 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1876597302, now seen corresponding path program 1 times [2019-10-07 14:18:08,809 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:08,809 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:08,809 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:08,809 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:18:09,054 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:09,054 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:09,055 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:09,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:09,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:09,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:09,056 INFO L87 Difference]: Start difference. First operand 4325 states and 6703 transitions. Second operand 4 states. [2019-10-07 14:18:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:11,449 INFO L93 Difference]: Finished difference Result 13046 states and 20566 transitions. [2019-10-07 14:18:11,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:11,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:18:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:11,531 INFO L225 Difference]: With dead ends: 13046 [2019-10-07 14:18:11,531 INFO L226 Difference]: Without dead ends: 8764 [2019-10-07 14:18:11,563 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2019-10-07 14:18:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 8456. [2019-10-07 14:18:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8456 states. [2019-10-07 14:18:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8456 states to 8456 states and 13251 transitions. [2019-10-07 14:18:12,043 INFO L78 Accepts]: Start accepts. Automaton has 8456 states and 13251 transitions. Word has length 125 [2019-10-07 14:18:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:12,046 INFO L462 AbstractCegarLoop]: Abstraction has 8456 states and 13251 transitions. [2019-10-07 14:18:12,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8456 states and 13251 transitions. [2019-10-07 14:18:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:18:12,052 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:12,052 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:12,052 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:12,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1606328455, now seen corresponding path program 1 times [2019-10-07 14:18:12,053 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:12,053 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:12,053 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:12,053 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:18:12,215 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:12,215 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:12,216 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:12,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:12,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:12,217 INFO L87 Difference]: Start difference. First operand 8456 states and 13251 transitions. Second operand 4 states. [2019-10-07 14:18:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:14,288 INFO L93 Difference]: Finished difference Result 25429 states and 40759 transitions. [2019-10-07 14:18:14,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:14,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:18:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:14,421 INFO L225 Difference]: With dead ends: 25429 [2019-10-07 14:18:14,421 INFO L226 Difference]: Without dead ends: 17017 [2019-10-07 14:18:14,463 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17017 states. [2019-10-07 14:18:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17017 to 16622. [2019-10-07 14:18:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16622 states. [2019-10-07 14:18:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 26386 transitions. [2019-10-07 14:18:16,219 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 26386 transitions. Word has length 125 [2019-10-07 14:18:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:16,219 INFO L462 AbstractCegarLoop]: Abstraction has 16622 states and 26386 transitions. [2019-10-07 14:18:16,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 26386 transitions. [2019-10-07 14:18:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-07 14:18:16,224 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:16,224 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:18:16,224 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1741853107, now seen corresponding path program 1 times [2019-10-07 14:18:16,225 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:16,225 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:16,225 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:16,225 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:18:16,366 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:16,366 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:16,366 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:16,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:16,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:16,368 INFO L87 Difference]: Start difference. First operand 16622 states and 26386 transitions. Second operand 4 states. [2019-10-07 14:18:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:19,175 INFO L93 Difference]: Finished difference Result 50149 states and 82465 transitions. [2019-10-07 14:18:19,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:19,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-07 14:18:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:19,370 INFO L225 Difference]: With dead ends: 50149 [2019-10-07 14:18:19,370 INFO L226 Difference]: Without dead ends: 33573 [2019-10-07 14:18:19,434 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33573 states. [2019-10-07 14:18:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33573 to 33013. [2019-10-07 14:18:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33013 states. [2019-10-07 14:18:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33013 states to 33013 states and 53524 transitions. [2019-10-07 14:18:21,425 INFO L78 Accepts]: Start accepts. Automaton has 33013 states and 53524 transitions. Word has length 126 [2019-10-07 14:18:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:21,426 INFO L462 AbstractCegarLoop]: Abstraction has 33013 states and 53524 transitions. [2019-10-07 14:18:21,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 33013 states and 53524 transitions. [2019-10-07 14:18:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:18:21,430 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:21,430 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:21,430 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:21,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1838696965, now seen corresponding path program 1 times [2019-10-07 14:18:21,431 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:21,431 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:21,431 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:21,432 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:18:21,560 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:21,560 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:21,560 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:21,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:21,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:21,561 INFO L87 Difference]: Start difference. First operand 33013 states and 53524 transitions. Second operand 4 states. [2019-10-07 14:18:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:25,936 INFO L93 Difference]: Finished difference Result 99788 states and 171102 transitions. [2019-10-07 14:18:25,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:25,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-07 14:18:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:26,341 INFO L225 Difference]: With dead ends: 99788 [2019-10-07 14:18:26,342 INFO L226 Difference]: Without dead ends: 66825 [2019-10-07 14:18:26,493 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66825 states. [2019-10-07 14:18:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66825 to 65924. [2019-10-07 14:18:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65924 states. [2019-10-07 14:18:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65924 states to 65924 states and 110662 transitions. [2019-10-07 14:18:29,754 INFO L78 Accepts]: Start accepts. Automaton has 65924 states and 110662 transitions. Word has length 127 [2019-10-07 14:18:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:29,754 INFO L462 AbstractCegarLoop]: Abstraction has 65924 states and 110662 transitions. [2019-10-07 14:18:29,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 65924 states and 110662 transitions. [2019-10-07 14:18:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 14:18:29,759 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:29,759 INFO L385 BasicCegarLoop]: trace histogram [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 14:18:29,759 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1166595595, now seen corresponding path program 1 times [2019-10-07 14:18:29,760 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:29,760 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:29,760 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:29,760 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:18:29,898 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:29,898 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:29,899 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:18:29,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:29,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:18:29,901 INFO L87 Difference]: Start difference. First operand 65924 states and 110662 transitions. Second operand 4 states. [2019-10-07 14:18:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:37,433 INFO L93 Difference]: Finished difference Result 199563 states and 365834 transitions. [2019-10-07 14:18:37,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:37,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-07 14:18:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:38,131 INFO L225 Difference]: With dead ends: 199563 [2019-10-07 14:18:38,132 INFO L226 Difference]: Without dead ends: 133685 [2019-10-07 14:18:38,291 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133685 states. [2019-10-07 14:18:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133685 to 131221. [2019-10-07 14:18:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131221 states. [2019-10-07 14:18:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131221 states to 131221 states and 229647 transitions. [2019-10-07 14:18:48,726 INFO L78 Accepts]: Start accepts. Automaton has 131221 states and 229647 transitions. Word has length 128 [2019-10-07 14:18:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:48,727 INFO L462 AbstractCegarLoop]: Abstraction has 131221 states and 229647 transitions. [2019-10-07 14:18:48,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 131221 states and 229647 transitions. [2019-10-07 14:18:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-07 14:18:48,734 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:48,735 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:48,735 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash -114770457, now seen corresponding path program 1 times [2019-10-07 14:18:48,736 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:48,736 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:48,736 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:48,736 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:18:48,892 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:48,893 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:18:48,893 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 14:18:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:49,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:18:49,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:18:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:18:49,611 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:18:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:18:50,050 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:18:50,051 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:18:50,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:50,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:18:50,052 INFO L87 Difference]: Start difference. First operand 131221 states and 229647 transitions. Second operand 4 states. [2019-10-07 14:19:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:00,379 INFO L93 Difference]: Finished difference Result 273631 states and 494605 transitions. [2019-10-07 14:19:00,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:19:00,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2019-10-07 14:19:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:01,250 INFO L225 Difference]: With dead ends: 273631 [2019-10-07 14:19:01,250 INFO L226 Difference]: Without dead ends: 142453 [2019-10-07 14:19:01,700 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:19:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142453 states. [2019-10-07 14:19:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142453 to 142453. [2019-10-07 14:19:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142453 states. [2019-10-07 14:19:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142453 states to 142453 states and 250671 transitions. [2019-10-07 14:19:17,304 INFO L78 Accepts]: Start accepts. Automaton has 142453 states and 250671 transitions. Word has length 176 [2019-10-07 14:19:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:17,305 INFO L462 AbstractCegarLoop]: Abstraction has 142453 states and 250671 transitions. [2019-10-07 14:19:17,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:19:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 142453 states and 250671 transitions. [2019-10-07 14:19:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:19:17,313 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:17,314 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:17,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:19:17,522 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash 2000406401, now seen corresponding path program 1 times [2019-10-07 14:19:17,522 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:17,523 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:17,523 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:17,523 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-07 14:19:18,030 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:18,030 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:19:18,031 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 14:19:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:18,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 3396 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:19:18,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:19:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:19:18,859 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:19:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:19:19,254 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:19:19,255 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:19:19,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:19:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:19:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:19:19,256 INFO L87 Difference]: Start difference. First operand 142453 states and 250671 transitions. Second operand 4 states. [2019-10-07 14:19:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:28,149 INFO L93 Difference]: Finished difference Result 296095 states and 536359 transitions. [2019-10-07 14:19:28,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:19:28,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2019-10-07 14:19:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:28,859 INFO L225 Difference]: With dead ends: 296095 [2019-10-07 14:19:28,859 INFO L226 Difference]: Without dead ends: 153685 [2019-10-07 14:19:29,154 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 369 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:19:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153685 states. [2019-10-07 14:19:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153685 to 153685. [2019-10-07 14:19:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153685 states. [2019-10-07 14:19:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153685 states to 153685 states and 271695 transitions. [2019-10-07 14:19:36,410 INFO L78 Accepts]: Start accepts. Automaton has 153685 states and 271695 transitions. Word has length 181 [2019-10-07 14:19:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:36,411 INFO L462 AbstractCegarLoop]: Abstraction has 153685 states and 271695 transitions. [2019-10-07 14:19:36,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:19:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 153685 states and 271695 transitions. [2019-10-07 14:19:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 14:19:36,419 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:36,419 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:36,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:19:36,628 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash -706193071, now seen corresponding path program 1 times [2019-10-07 14:19:36,629 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:36,630 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:36,630 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:36,630 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:19:37,034 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:37,034 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:19:37,034 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 14:19:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:37,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:19:37,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:19:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:19:42,199 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:19:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:19:42,554 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:19:42,554 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:19:42,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:19:42,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:19:42,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:19:42,556 INFO L87 Difference]: Start difference. First operand 153685 states and 271695 transitions. Second operand 4 states. [2019-10-07 14:19:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:47,422 INFO L93 Difference]: Finished difference Result 318559 states and 578113 transitions. [2019-10-07 14:19:47,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:19:47,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2019-10-07 14:19:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:48,154 INFO L225 Difference]: With dead ends: 318559 [2019-10-07 14:19:48,154 INFO L226 Difference]: Without dead ends: 164917 [2019-10-07 14:19:49,166 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:19:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164917 states. [2019-10-07 14:19:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164917 to 164917. [2019-10-07 14:19:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164917 states. [2019-10-07 14:19:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164917 states to 164917 states and 292719 transitions. [2019-10-07 14:19:57,408 INFO L78 Accepts]: Start accepts. Automaton has 164917 states and 292719 transitions. Word has length 185 [2019-10-07 14:19:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:57,409 INFO L462 AbstractCegarLoop]: Abstraction has 164917 states and 292719 transitions. [2019-10-07 14:19:57,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:19:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 164917 states and 292719 transitions. [2019-10-07 14:19:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 14:19:57,417 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:57,418 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:57,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:19:57,627 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1243696435, now seen corresponding path program 1 times [2019-10-07 14:19:57,627 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:57,627 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:57,627 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:57,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-07 14:19:57,984 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:57,984 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:19:57,984 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 14:20:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:03,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 3403 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:03,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:20:03,971 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:20:04,369 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:04,370 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:20:04,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:04,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:04,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:20:04,371 INFO L87 Difference]: Start difference. First operand 164917 states and 292719 transitions. Second operand 4 states. [2019-10-07 14:20:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:09,832 INFO L93 Difference]: Finished difference Result 341023 states and 619867 transitions. [2019-10-07 14:20:09,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:09,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2019-10-07 14:20:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:10,610 INFO L225 Difference]: With dead ends: 341023 [2019-10-07 14:20:10,611 INFO L226 Difference]: Without dead ends: 176149 [2019-10-07 14:20:11,376 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:20:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176149 states. [2019-10-07 14:20:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176149 to 176149. [2019-10-07 14:20:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176149 states. [2019-10-07 14:20:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176149 states to 176149 states and 313743 transitions. [2019-10-07 14:20:22,524 INFO L78 Accepts]: Start accepts. Automaton has 176149 states and 313743 transitions. Word has length 188 [2019-10-07 14:20:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:22,525 INFO L462 AbstractCegarLoop]: Abstraction has 176149 states and 313743 transitions. [2019-10-07 14:20:22,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 176149 states and 313743 transitions. [2019-10-07 14:20:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-07 14:20:22,530 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:22,530 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:22,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:22,733 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1285088033, now seen corresponding path program 1 times [2019-10-07 14:20:22,734 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:22,734 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:22,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:22,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-07 14:20:23,172 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:23,173 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:23,173 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 14:20:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:23,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:20:23,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:20:23,962 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:20:24,535 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:20:24,535 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [19] total 26 [2019-10-07 14:20:24,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:20:24,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:20:24,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2019-10-07 14:20:24,538 INFO L87 Difference]: Start difference. First operand 176149 states and 313743 transitions. Second operand 9 states. [2019-10-07 14:20:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:31,440 INFO L93 Difference]: Finished difference Result 179011 states and 335814 transitions. [2019-10-07 14:20:31,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:20:31,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2019-10-07 14:20:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:32,237 INFO L225 Difference]: With dead ends: 179011 [2019-10-07 14:20:32,237 INFO L226 Difference]: Without dead ends: 178792 [2019-10-07 14:20:32,336 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 381 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:20:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178792 states. [2019-10-07 14:20:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178792 to 177109. [2019-10-07 14:20:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177109 states. [2019-10-07 14:20:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177109 states to 177109 states and 320953 transitions. [2019-10-07 14:20:45,279 INFO L78 Accepts]: Start accepts. Automaton has 177109 states and 320953 transitions. Word has length 190 [2019-10-07 14:20:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:45,280 INFO L462 AbstractCegarLoop]: Abstraction has 177109 states and 320953 transitions. [2019-10-07 14:20:45,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:20:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 177109 states and 320953 transitions. [2019-10-07 14:20:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:20:45,286 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:45,286 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:45,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:45,487 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:45,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:45,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1864901382, now seen corresponding path program 1 times [2019-10-07 14:20:45,488 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:45,489 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:45,489 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:45,489 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-07 14:20:45,957 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:45,957 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:45,958 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 14:20:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:46,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:20:46,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:20:46,913 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:20:47,423 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:20:47,424 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [19] total 22 [2019-10-07 14:20:47,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:20:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:20:47,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:20:47,427 INFO L87 Difference]: Start difference. First operand 177109 states and 320953 transitions. Second operand 5 states. [2019-10-07 14:20:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:57,907 INFO L93 Difference]: Finished difference Result 177328 states and 321197 transitions. [2019-10-07 14:20:57,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:20:57,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-10-07 14:20:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:58,549 INFO L225 Difference]: With dead ends: 177328 [2019-10-07 14:20:58,549 INFO L226 Difference]: Without dead ends: 177109 [2019-10-07 14:20:58,635 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 395 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:20:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177109 states. [2019-10-07 14:21:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177109 to 177109. [2019-10-07 14:21:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177109 states. [2019-10-07 14:21:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177109 states to 177109 states and 320674 transitions. [2019-10-07 14:21:05,584 INFO L78 Accepts]: Start accepts. Automaton has 177109 states and 320674 transitions. Word has length 195 [2019-10-07 14:21:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:05,585 INFO L462 AbstractCegarLoop]: Abstraction has 177109 states and 320674 transitions. [2019-10-07 14:21:05,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:21:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 177109 states and 320674 transitions. [2019-10-07 14:21:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:21:05,594 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:05,594 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:21:05,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:21:05,795 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1353713357, now seen corresponding path program 1 times [2019-10-07 14:21:05,796 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:05,796 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:05,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:05,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-07 14:21:06,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:06,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:21:06,166 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 14:21:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:06,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 3457 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 14:21:06,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:21:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:21:07,051 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:21:07,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:07,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:21:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:21:08,002 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:21:08,063 INFO L162 IcfgInterpreter]: Started Sifa with 176 locations of interest [2019-10-07 14:21:08,064 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:21:08,078 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:21:08,091 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:21:08,092 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:21:55,908 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 762 [2019-10-07 14:22:00,681 WARN L191 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:22:01,073 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:22:01,363 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:22:01,574 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:22:02,679 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:03,162 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:03,622 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:04,687 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:05,693 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 1038 DAG size of output: 1036 [2019-10-07 14:22:06,159 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:07,199 WARN L191 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:07,676 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:08,123 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:09,167 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:22:09,188 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 388 for LOIs [2019-10-07 14:22:09,421 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:22:09,528 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:22:09,875 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 14:22:09,876 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1086 for LOIs [2019-10-07 14:22:10,320 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:11,302 WARN L191 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:11,425 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:12,171 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:12,624 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:13,592 WARN L191 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:13,733 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:14,494 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:15,505 WARN L191 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:15,960 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:16,090 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:16,844 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:22,091 WARN L191 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1086 [2019-10-07 14:22:22,542 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:22,721 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:23,486 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:23,952 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:24,401 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:24,521 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:25,284 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:25,734 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:26,184 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:26,302 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:27,063 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:27,513 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:27,969 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:28,090 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:28,844 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:29,302 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:29,763 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:29,884 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:30,637 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:31,084 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:31,535 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:31,656 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:32,418 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:32,869 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:33,322 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:33,442 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:34,220 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:34,671 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:35,122 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:35,241 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:36,013 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:36,462 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:36,929 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:37,048 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:37,828 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:38,271 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:38,726 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:22:38,845 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:39,622 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:40,437 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:41,189 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:41,371 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:42,131 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:43,496 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:22:44,226 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:44,375 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:45,118 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:45,858 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:46,603 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:46,724 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:22:47,461 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:22:48,245 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:22:48,994 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:22:49,120 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:22:49,879 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:22:51,245 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:22:51,984 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:22:52,113 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:22:52,855 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:22:53,600 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:22:54,351 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:22:54,469 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:22:55,231 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:22:55,994 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:22:56,766 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:22:56,913 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:22:57,678 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:22:58,449 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:22:59,218 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:22:59,341 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:00,122 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:00,956 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:01,761 WARN L191 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:01,892 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:02,658 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:04,142 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1267 [2019-10-07 14:23:04,912 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:05,081 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:05,848 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:06,628 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:07,400 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:07,522 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:08,287 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:23:09,666 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:10,419 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:10,563 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:11,330 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:12,675 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:13,423 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:13,549 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:14,288 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:15,027 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:15,772 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:15,897 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:16,645 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:17,424 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:18,180 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:18,308 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:19,059 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:19,824 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:20,606 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:20,737 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:21,498 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:22,255 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:23,016 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:23,142 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:23,893 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:25,240 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1258 [2019-10-07 14:23:25,994 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:23:26,120 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:26,881 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:28,217 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1260 [2019-10-07 14:23:28,983 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:29,110 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:29,858 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:23:32,111 WARN L191 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:32,896 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:33,027 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:33,773 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:35,120 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:35,868 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:35,990 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:36,739 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:37,497 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:38,261 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:38,378 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:39,127 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:41,271 WARN L191 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:42,036 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:42,164 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:42,922 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:44,276 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:45,027 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:45,152 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:45,918 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:48,235 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:48,994 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:49,133 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:49,887 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:51,248 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:23:51,993 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:52,117 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:52,886 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:53,637 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:54,396 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:54,515 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:23:55,286 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:23:56,095 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:56,875 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:57,003 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:23:57,761 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:58,530 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:59,278 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:59,403 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:00,172 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:00,935 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:01,701 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:01,820 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:02,576 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:03,924 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:04,680 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:04,805 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:05,570 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:06,878 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:24:07,650 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:07,775 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:08,545 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:24:09,913 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:10,662 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:10,783 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:11,567 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:12,910 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:13,674 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:13,818 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:14,559 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:15,304 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:16,062 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:16,180 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:16,951 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:17,736 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:18,507 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:18,636 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:19,399 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:20,169 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:20,934 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:21,071 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:21,840 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:23,263 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:24,020 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:24,141 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:24,888 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:26,248 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:27,008 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:27,131 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:27,895 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:28,643 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:29,397 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:29,536 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:30,306 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:31,105 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:31,870 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:31,998 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:32,755 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:34,126 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:34,884 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:35,009 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:35,752 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:37,114 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:37,870 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:37,989 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:38,766 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:40,096 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:40,855 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:40,982 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:41,735 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:43,122 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:43,880 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:44,003 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:44,772 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:46,116 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:24:46,884 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:47,012 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:47,767 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:48,532 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:49,283 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:49,406 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:24:50,151 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:24:51,558 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:52,314 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:52,453 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:53,201 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:54,558 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:24:55,302 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:55,432 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:56,188 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:56,955 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:57,711 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:24:57,834 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:24:58,595 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:59,953 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:25:00,718 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:25:00,844 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:01,594 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:02,851 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:25:03,626 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:03,749 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:04,530 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:25:05,897 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1260 [2019-10-07 14:25:06,660 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:06,788 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:07,544 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:25:08,848 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:25:09,602 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:09,734 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:10,517 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:25:10,525 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1110 for LOIs [2019-10-07 14:25:10,999 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:25:11,491 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:25:11,611 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:12,365 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:12,904 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:13,402 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:13,520 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:14,269 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:15,175 WARN L191 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1120 [2019-10-07 14:25:15,672 WARN L191 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:15,802 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:16,558 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:17,074 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:17,569 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:17,686 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:18,458 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:18,973 WARN L191 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:19,477 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:19,595 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:20,336 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:20,834 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:21,352 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:25:21,469 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:22,235 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:22,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:22,527 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.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 14:25:22,532 INFO L168 Benchmark]: Toolchain (without parser) took 461474.61 ms. Allocated memory was 144.7 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 98.3 MB in the beginning and 920.4 MB in the end (delta: -822.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,533 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 991.11 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.1 MB in the beginning and 143.8 MB in the end (delta: -45.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,533 INFO L168 Benchmark]: Boogie Preprocessor took 200.09 ms. Allocated memory is still 202.9 MB. Free memory was 143.8 MB in the beginning and 134.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,534 INFO L168 Benchmark]: RCFGBuilder took 4868.35 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 134.6 MB in the beginning and 231.4 MB in the end (delta: -96.8 MB). Peak memory consumption was 161.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,534 INFO L168 Benchmark]: TraceAbstraction took 455409.53 ms. Allocated memory was 304.6 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 231.4 MB in the beginning and 920.4 MB in the end (delta: -689.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2019-10-07 14:25:22,539 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 991.11 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.1 MB in the beginning and 143.8 MB in the end (delta: -45.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.09 ms. Allocated memory is still 202.9 MB. Free memory was 143.8 MB in the beginning and 134.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4868.35 ms. Allocated memory was 202.9 MB in the beginning and 304.6 MB in the end (delta: 101.7 MB). Free memory was 134.6 MB in the beginning and 231.4 MB in the end (delta: -96.8 MB). Peak memory consumption was 161.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 455409.53 ms. Allocated memory was 304.6 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 231.4 MB in the beginning and 920.4 MB in the end (delta: -689.1 MB). Peak memory consumption was 2.7 GB. 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...