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_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:27:10,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:27:10,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:27:10,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:27:10,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:27:10,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:27:10,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:27:10,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:27:10,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:27:10,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:27:10,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:27:10,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:27:10,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:27:10,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:27:10,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:27:10,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:27:10,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:27:10,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:27:10,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:27:10,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:27:10,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:27:10,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:27:10,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:27:10,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:27:10,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:27:10,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:27:10,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:27:10,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:27:10,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:27:10,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:27:10,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:27:10,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:27:10,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:27:10,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:27:10,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:27:10,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:27:10,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:27:10,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:27:10,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:27:10,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:27:10,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:27:10,404 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 14:27:10,441 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:27:10,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:27:10,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:27:10,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:27:10,443 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:27:10,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:27:10,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:27:10,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:27:10,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:27:10,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:27:10,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:27:10,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:27:10,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:27:10,447 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:27:10,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:27:10,447 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:27:10,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:27:10,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:27:10,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:27:10,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:27:10,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:27:10,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:27:10,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:27:10,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:27:10,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:27:10,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:27:10,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:27:10,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:27:10,450 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 14:27:10,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:27:10,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:27:10,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:27:10,753 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:27:10,753 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:27:10,754 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-10-07 14:27:10,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82192fbe8/ae36d57735584bda84a418d5991a9669/FLAGda700e008 [2019-10-07 14:27:11,443 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:27:11,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product25.cil.c [2019-10-07 14:27:11,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82192fbe8/ae36d57735584bda84a418d5991a9669/FLAGda700e008 [2019-10-07 14:27:11,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82192fbe8/ae36d57735584bda84a418d5991a9669 [2019-10-07 14:27:11,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:27:11,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:27:11,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:27:11,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:27:11,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:27:11,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:27:11" (1/1) ... [2019-10-07 14:27:11,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74752006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:11, skipping insertion in model container [2019-10-07 14:27:11,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:27:11" (1/1) ... [2019-10-07 14:27:11,696 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:27:11,786 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:27:12,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:27:12,481 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:27:12,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:27:12,711 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:27:12,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12 WrapperNode [2019-10-07 14:27:12,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:27:12,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:27:12,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:27:12,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:27:12,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (1/1) ... [2019-10-07 14:27:12,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:27:12,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:27:12,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:27:12,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:27:12,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (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 14:27:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:27:12,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:27:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:27:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:27:12,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:27:12,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:27:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:27:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:27:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:27:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:27:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:27:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:27:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:27:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:27:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:27:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:27:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:27:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:27:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:27:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:27:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:27:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:27:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:27:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:27:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:27:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:27:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:27:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:27:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:27:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:27:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:27:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:27:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:27:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:27:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:27:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:27:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:27:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:27:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:27:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:27:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:27:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:27:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:27:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:27:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:27:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:27:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:27:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:27:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:27:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:27:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:27:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:27:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:27:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:27:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:27:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:27:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:27:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:27:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:27:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:27:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:27:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:27:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:27:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:27:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:27:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:27:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:27:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:27:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:27:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:27:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:27:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:27:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:27:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:27:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:27:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:27:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:27:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:27:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:27:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:27:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:27:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:27:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:27:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:27:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:27:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:27:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:27:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:27:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:27:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:27:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:27:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:27:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:27:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:27:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:27:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:27:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:27:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:27:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:27:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:27:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:27:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:27:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:27:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:27:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:27:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:27:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:27:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:27:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:27:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:27:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:27:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:27:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:27:17,954 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:27:17,954 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:27:17,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:27:17 BoogieIcfgContainer [2019-10-07 14:27:17,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:27:17,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:27:17,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:27:17,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:27:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:27:11" (1/3) ... [2019-10-07 14:27:17,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1574bd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:27:17, skipping insertion in model container [2019-10-07 14:27:17,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:27:12" (2/3) ... [2019-10-07 14:27:17,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1574bd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:27:17, skipping insertion in model container [2019-10-07 14:27:17,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:27:17" (3/3) ... [2019-10-07 14:27:17,964 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2019-10-07 14:27:17,976 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:27:17,987 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:27:17,999 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:27:18,039 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:27:18,039 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:27:18,039 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:27:18,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:27:18,040 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:27:18,040 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:27:18,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:27:18,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:27:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-07 14:27:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-07 14:27:18,119 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:18,120 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] [2019-10-07 14:27:18,123 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1500061591, now seen corresponding path program 1 times [2019-10-07 14:27:18,141 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:18,141 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:18,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:18,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:19,055 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 14:27:19,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:19,057 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:19,057 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:27:19,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:27:19,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:27:19,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:19,081 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 8 states. [2019-10-07 14:27:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:22,464 INFO L93 Difference]: Finished difference Result 1614 states and 2480 transitions. [2019-10-07 14:27:22,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:27:22,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-10-07 14:27:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:22,497 INFO L225 Difference]: With dead ends: 1614 [2019-10-07 14:27:22,497 INFO L226 Difference]: Without dead ends: 1163 [2019-10-07 14:27:22,509 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:27:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2019-10-07 14:27:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2019-10-07 14:27:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2019-10-07 14:27:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1725 transitions. [2019-10-07 14:27:22,693 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1725 transitions. Word has length 98 [2019-10-07 14:27:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:22,694 INFO L462 AbstractCegarLoop]: Abstraction has 1153 states and 1725 transitions. [2019-10-07 14:27:22,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:27:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1725 transitions. [2019-10-07 14:27:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:27:22,700 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:22,700 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] [2019-10-07 14:27:22,700 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:22,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1113138244, now seen corresponding path program 1 times [2019-10-07 14:27:22,701 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:22,701 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:22,701 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:22,702 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:22,971 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 14:27:22,972 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:22,972 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:22,972 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:27:22,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:27:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:27:22,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:22,975 INFO L87 Difference]: Start difference. First operand 1153 states and 1725 transitions. Second operand 8 states. [2019-10-07 14:27:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:23,075 INFO L93 Difference]: Finished difference Result 2012 states and 3042 transitions. [2019-10-07 14:27:23,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:27:23,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-07 14:27:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:23,086 INFO L225 Difference]: With dead ends: 2012 [2019-10-07 14:27:23,086 INFO L226 Difference]: Without dead ends: 1171 [2019-10-07 14:27:23,093 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-07 14:27:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2019-10-07 14:27:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2019-10-07 14:27:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1746 transitions. [2019-10-07 14:27:23,168 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1746 transitions. Word has length 103 [2019-10-07 14:27:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:23,171 INFO L462 AbstractCegarLoop]: Abstraction has 1171 states and 1746 transitions. [2019-10-07 14:27:23,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:27:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1746 transitions. [2019-10-07 14:27:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:27:23,179 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:23,179 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] [2019-10-07 14:27:23,179 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:23,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1868811998, now seen corresponding path program 1 times [2019-10-07 14:27:23,180 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:23,180 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:23,180 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:23,180 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:27:23,529 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:23,529 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:23,530 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 14:27:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:24,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:27:24,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:27:24,308 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:24,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:24,520 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 14:27:24,521 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:24,521 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-07 14:27:24,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:27:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:27:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:24,525 INFO L87 Difference]: Start difference. First operand 1171 states and 1746 transitions. Second operand 7 states. [2019-10-07 14:27:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:25,656 INFO L93 Difference]: Finished difference Result 2061 states and 3106 transitions. [2019-10-07 14:27:25,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:27:25,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-07 14:27:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:25,671 INFO L225 Difference]: With dead ends: 2061 [2019-10-07 14:27:25,671 INFO L226 Difference]: Without dead ends: 1207 [2019-10-07 14:27:25,677 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:27:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2019-10-07 14:27:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1175. [2019-10-07 14:27:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-07 14:27:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1749 transitions. [2019-10-07 14:27:25,793 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1749 transitions. Word has length 107 [2019-10-07 14:27:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:25,794 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1749 transitions. [2019-10-07 14:27:25,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:27:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1749 transitions. [2019-10-07 14:27:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:27:25,807 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:25,807 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] [2019-10-07 14:27:26,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:26,020 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:26,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1196719180, now seen corresponding path program 1 times [2019-10-07 14:27:26,021 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:26,021 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:26,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:26,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:27:26,276 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:26,277 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:26,277 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 14:27:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:26,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:27:26,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:27:26,944 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:27,099 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 14:27:27,100 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:27,100 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-07 14:27:27,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:27:27,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:27:27,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:27,102 INFO L87 Difference]: Start difference. First operand 1175 states and 1749 transitions. Second operand 5 states. [2019-10-07 14:27:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:27,279 INFO L93 Difference]: Finished difference Result 2163 states and 3293 transitions. [2019-10-07 14:27:27,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:27:27,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-07 14:27:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:27,293 INFO L225 Difference]: With dead ends: 2163 [2019-10-07 14:27:27,293 INFO L226 Difference]: Without dead ends: 1175 [2019-10-07 14:27:27,299 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:27:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-07 14:27:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-10-07 14:27:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-07 14:27:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1731 transitions. [2019-10-07 14:27:27,364 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1731 transitions. Word has length 108 [2019-10-07 14:27:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:27,365 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1731 transitions. [2019-10-07 14:27:27,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:27:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1731 transitions. [2019-10-07 14:27:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:27:27,370 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:27,370 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:27:27,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:27,581 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:27,581 INFO L82 PathProgramCache]: Analyzing trace with hash -287959244, now seen corresponding path program 1 times [2019-10-07 14:27:27,583 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:27,583 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:27,583 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:27,583 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:27:27,787 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:27,787 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:27,788 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 14:27:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:28,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-07 14:27:28,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:28,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:28,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:27:28,608 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:28,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:28,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:28,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:27:29,010 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:29,011 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2019-10-07 14:27:29,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:27:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:27:29,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:27:29,012 INFO L87 Difference]: Start difference. First operand 1175 states and 1731 transitions. Second operand 10 states. [2019-10-07 14:27:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:34,776 INFO L93 Difference]: Finished difference Result 2910 states and 4402 transitions. [2019-10-07 14:27:34,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-07 14:27:34,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2019-10-07 14:27:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:34,795 INFO L225 Difference]: With dead ends: 2910 [2019-10-07 14:27:34,795 INFO L226 Difference]: Without dead ends: 2137 [2019-10-07 14:27:34,802 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 14:27:34,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-10-07 14:27:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2020. [2019-10-07 14:27:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2019-10-07 14:27:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3016 transitions. [2019-10-07 14:27:34,952 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3016 transitions. Word has length 110 [2019-10-07 14:27:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:34,954 INFO L462 AbstractCegarLoop]: Abstraction has 2020 states and 3016 transitions. [2019-10-07 14:27:34,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:27:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3016 transitions. [2019-10-07 14:27:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:27:34,958 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:34,958 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:27:35,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:35,166 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash -43094052, now seen corresponding path program 1 times [2019-10-07 14:27:35,167 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:35,167 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:35,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:35,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:27:35,349 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:35,349 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:35,350 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 14:27:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:35,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:27:35,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:27:35,966 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:27:36,068 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:36,069 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-07 14:27:36,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:27:36,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:27:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:36,070 INFO L87 Difference]: Start difference. First operand 2020 states and 3016 transitions. Second operand 3 states. [2019-10-07 14:27:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:36,326 INFO L93 Difference]: Finished difference Result 5789 states and 8901 transitions. [2019-10-07 14:27:36,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:27:36,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-07 14:27:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:36,358 INFO L225 Difference]: With dead ends: 5789 [2019-10-07 14:27:36,358 INFO L226 Difference]: Without dead ends: 3800 [2019-10-07 14:27:36,372 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2019-10-07 14:27:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3677. [2019-10-07 14:27:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2019-10-07 14:27:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5541 transitions. [2019-10-07 14:27:36,698 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5541 transitions. Word has length 111 [2019-10-07 14:27:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:36,699 INFO L462 AbstractCegarLoop]: Abstraction has 3677 states and 5541 transitions. [2019-10-07 14:27:36,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:27:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5541 transitions. [2019-10-07 14:27:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:27:36,703 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:36,703 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] [2019-10-07 14:27:36,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:36,911 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash -191467676, now seen corresponding path program 1 times [2019-10-07 14:27:36,912 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:36,912 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:36,912 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:36,912 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:27:37,102 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:37,102 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:37,102 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 14:27:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:37,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:27:37,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:27:37,747 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:37,842 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 14:27:37,843 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:37,843 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:27:37,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:27:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:27:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:37,844 INFO L87 Difference]: Start difference. First operand 3677 states and 5541 transitions. Second operand 3 states. [2019-10-07 14:27:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:38,079 INFO L93 Difference]: Finished difference Result 8236 states and 12606 transitions. [2019-10-07 14:27:38,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:27:38,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-07 14:27:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:38,113 INFO L225 Difference]: With dead ends: 8236 [2019-10-07 14:27:38,113 INFO L226 Difference]: Without dead ends: 4590 [2019-10-07 14:27:38,140 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2019-10-07 14:27:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 4480. [2019-10-07 14:27:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2019-10-07 14:27:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6770 transitions. [2019-10-07 14:27:38,442 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6770 transitions. Word has length 110 [2019-10-07 14:27:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:38,443 INFO L462 AbstractCegarLoop]: Abstraction has 4480 states and 6770 transitions. [2019-10-07 14:27:38,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:27:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6770 transitions. [2019-10-07 14:27:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 14:27:38,447 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:38,447 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:38,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:38,655 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1280558161, now seen corresponding path program 1 times [2019-10-07 14:27:38,656 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:38,656 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:38,656 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:38,657 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 14:27:38,961 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:38,961 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:38,961 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 14:27:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:39,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:27:39,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:27:39,570 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 14:27:39,671 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:39,671 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:27:39,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:27:39,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:27:39,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:39,672 INFO L87 Difference]: Start difference. First operand 4480 states and 6770 transitions. Second operand 3 states. [2019-10-07 14:27:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:40,043 INFO L93 Difference]: Finished difference Result 9850 states and 15162 transitions. [2019-10-07 14:27:40,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:27:40,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-10-07 14:27:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:40,094 INFO L225 Difference]: With dead ends: 9850 [2019-10-07 14:27:40,094 INFO L226 Difference]: Without dead ends: 5401 [2019-10-07 14:27:40,130 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2019-10-07 14:27:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 5200. [2019-10-07 14:27:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5200 states. [2019-10-07 14:27:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7858 transitions. [2019-10-07 14:27:40,518 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7858 transitions. Word has length 129 [2019-10-07 14:27:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:40,518 INFO L462 AbstractCegarLoop]: Abstraction has 5200 states and 7858 transitions. [2019-10-07 14:27:40,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:27:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7858 transitions. [2019-10-07 14:27:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-07 14:27:40,522 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:40,522 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:40,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:40,739 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:40,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1202175783, now seen corresponding path program 1 times [2019-10-07 14:27:40,739 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:40,740 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:40,740 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:40,740 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 14:27:41,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:41,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:41,097 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 14:27:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:41,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:27:41,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:27:41,918 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 14:27:42,051 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:42,051 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2019-10-07 14:27:42,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:27:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:27:42,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:42,056 INFO L87 Difference]: Start difference. First operand 5200 states and 7858 transitions. Second operand 5 states. [2019-10-07 14:27:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:42,323 INFO L93 Difference]: Finished difference Result 9952 states and 15240 transitions. [2019-10-07 14:27:42,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:27:42,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-10-07 14:27:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:42,372 INFO L225 Difference]: With dead ends: 9952 [2019-10-07 14:27:42,373 INFO L226 Difference]: Without dead ends: 5312 [2019-10-07 14:27:42,405 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2019-10-07 14:27:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 5264. [2019-10-07 14:27:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2019-10-07 14:27:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 7960 transitions. [2019-10-07 14:27:42,698 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 7960 transitions. Word has length 130 [2019-10-07 14:27:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:42,698 INFO L462 AbstractCegarLoop]: Abstraction has 5264 states and 7960 transitions. [2019-10-07 14:27:42,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:27:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 7960 transitions. [2019-10-07 14:27:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 14:27:42,708 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:42,708 INFO L385 BasicCegarLoop]: trace histogram [5, 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] [2019-10-07 14:27:42,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:42,925 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1336885174, now seen corresponding path program 1 times [2019-10-07 14:27:42,926 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:42,926 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:42,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:42,927 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:27:43,124 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:43,124 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:43,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:27:44,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 14:27:44,066 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 14:27:44,239 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:44,239 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:27:44,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:27:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:27:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:44,244 INFO L87 Difference]: Start difference. First operand 5264 states and 7960 transitions. Second operand 4 states. [2019-10-07 14:27:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:44,608 INFO L93 Difference]: Finished difference Result 10774 states and 16565 transitions. [2019-10-07 14:27:44,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:27:44,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-07 14:27:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:44,649 INFO L225 Difference]: With dead ends: 10774 [2019-10-07 14:27:44,650 INFO L226 Difference]: Without dead ends: 5264 [2019-10-07 14:27:44,669 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:27:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2019-10-07 14:27:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 5264. [2019-10-07 14:27:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2019-10-07 14:27:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 7864 transitions. [2019-10-07 14:27:44,968 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 7864 transitions. Word has length 161 [2019-10-07 14:27:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:44,969 INFO L462 AbstractCegarLoop]: Abstraction has 5264 states and 7864 transitions. [2019-10-07 14:27:44,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:27:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 7864 transitions. [2019-10-07 14:27:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 14:27:44,980 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:44,980 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:45,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:45,188 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1431261802, now seen corresponding path program 1 times [2019-10-07 14:27:45,188 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:45,189 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:45,189 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:45,189 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:27:45,432 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:45,432 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:46,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:27:46,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:27:46,915 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:47,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:27:47,363 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:47,363 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:27:47,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:27:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:27:47,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:27:47,366 INFO L87 Difference]: Start difference. First operand 5264 states and 7864 transitions. Second operand 9 states. [2019-10-07 14:27:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:54,822 INFO L93 Difference]: Finished difference Result 14650 states and 22324 transitions. [2019-10-07 14:27:54,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:27:54,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-10-07 14:27:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:54,880 INFO L225 Difference]: With dead ends: 14650 [2019-10-07 14:27:54,881 INFO L226 Difference]: Without dead ends: 9417 [2019-10-07 14:27:54,899 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 322 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:27:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9417 states. [2019-10-07 14:27:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9417 to 8899. [2019-10-07 14:27:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8899 states. [2019-10-07 14:27:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13415 transitions. [2019-10-07 14:27:55,471 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13415 transitions. Word has length 166 [2019-10-07 14:27:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:55,472 INFO L462 AbstractCegarLoop]: Abstraction has 8899 states and 13415 transitions. [2019-10-07 14:27:55,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:27:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13415 transitions. [2019-10-07 14:27:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 14:27:55,486 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:55,486 INFO L385 BasicCegarLoop]: trace histogram [5, 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] [2019-10-07 14:27:55,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:55,697 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1504183934, now seen corresponding path program 1 times [2019-10-07 14:27:55,697 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:55,697 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:55,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:55,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:27:55,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:55,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:56,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 14:27:56,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 14:27:56,545 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:27:56,682 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:56,682 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 10 [2019-10-07 14:27:56,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:27:56,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:27:56,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:56,684 INFO L87 Difference]: Start difference. First operand 8899 states and 13415 transitions. Second operand 5 states. [2019-10-07 14:27:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:57,007 INFO L93 Difference]: Finished difference Result 13024 states and 19860 transitions. [2019-10-07 14:27:57,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:27:57,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2019-10-07 14:27:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:57,059 INFO L225 Difference]: With dead ends: 13024 [2019-10-07 14:27:57,059 INFO L226 Difference]: Without dead ends: 9063 [2019-10-07 14:27:57,077 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2019-10-07 14:27:57,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8997. [2019-10-07 14:27:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2019-10-07 14:27:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 13539 transitions. [2019-10-07 14:27:57,609 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 13539 transitions. Word has length 165 [2019-10-07 14:27:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:57,610 INFO L462 AbstractCegarLoop]: Abstraction has 8997 states and 13539 transitions. [2019-10-07 14:27:57,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:27:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 13539 transitions. [2019-10-07 14:27:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:27:57,621 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:57,621 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:57,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:57,831 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:57,831 INFO L82 PathProgramCache]: Analyzing trace with hash -512489030, now seen corresponding path program 1 times [2019-10-07 14:27:57,831 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:57,831 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:57,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:57,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:58,122 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-10-07 14:27:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-07 14:27:58,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:58,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:58,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 14:27:58,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 14:27:58,945 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:59,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-07 14:27:59,245 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:59,245 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [9] total 17 [2019-10-07 14:27:59,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:27:59,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:27:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:27:59,247 INFO L87 Difference]: Start difference. First operand 8997 states and 13539 transitions. Second operand 10 states. [2019-10-07 14:28:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:01,600 INFO L93 Difference]: Finished difference Result 19348 states and 29630 transitions. [2019-10-07 14:28:01,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:28:01,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2019-10-07 14:28:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:01,666 INFO L225 Difference]: With dead ends: 19348 [2019-10-07 14:28:01,667 INFO L226 Difference]: Without dead ends: 11094 [2019-10-07 14:28:01,704 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:28:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11094 states. [2019-10-07 14:28:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11094 to 10863. [2019-10-07 14:28:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10863 states. [2019-10-07 14:28:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 16098 transitions. [2019-10-07 14:28:02,459 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 16098 transitions. Word has length 172 [2019-10-07 14:28:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:02,459 INFO L462 AbstractCegarLoop]: Abstraction has 10863 states and 16098 transitions. [2019-10-07 14:28:02,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:28:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 16098 transitions. [2019-10-07 14:28:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-07 14:28:02,469 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:02,470 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:02,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:02,678 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash 798168558, now seen corresponding path program 1 times [2019-10-07 14:28:02,680 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:02,681 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:02,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:02,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 14:28:02,824 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:02,824 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:03,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 14:28:03,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:03,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:03,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-07 14:28:03,581 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:03,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:03,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:28:03,824 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:03,825 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 16 [2019-10-07 14:28:03,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:28:03,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:28:03,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:28:03,826 INFO L87 Difference]: Start difference. First operand 10863 states and 16098 transitions. Second operand 9 states. [2019-10-07 14:28:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:11,027 INFO L93 Difference]: Finished difference Result 22258 states and 33649 transitions. [2019-10-07 14:28:11,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 14:28:11,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2019-10-07 14:28:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:11,181 INFO L225 Difference]: With dead ends: 22258 [2019-10-07 14:28:11,181 INFO L226 Difference]: Without dead ends: 22255 [2019-10-07 14:28:11,198 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:28:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22255 states. [2019-10-07 14:28:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22255 to 20349. [2019-10-07 14:28:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20349 states. [2019-10-07 14:28:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20349 states to 20349 states and 30512 transitions. [2019-10-07 14:28:12,971 INFO L78 Accepts]: Start accepts. Automaton has 20349 states and 30512 transitions. Word has length 168 [2019-10-07 14:28:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:12,971 INFO L462 AbstractCegarLoop]: Abstraction has 20349 states and 30512 transitions. [2019-10-07 14:28:12,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:28:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 20349 states and 30512 transitions. [2019-10-07 14:28:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:28:12,986 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:12,986 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:13,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:13,195 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1389846900, now seen corresponding path program 1 times [2019-10-07 14:28:13,196 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:13,196 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:13,196 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:13,196 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:28:13,365 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:13,366 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:14,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 3375 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 14:28:14,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 14:28:14,101 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:14,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:14,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:14,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:14,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-07 14:28:14,413 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:14,413 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 16 [2019-10-07 14:28:14,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:28:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:28:14,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:28:14,414 INFO L87 Difference]: Start difference. First operand 20349 states and 30512 transitions. Second operand 7 states. [2019-10-07 14:28:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:18,564 INFO L93 Difference]: Finished difference Result 40990 states and 62114 transitions. [2019-10-07 14:28:18,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:28:18,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2019-10-07 14:28:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:18,672 INFO L225 Difference]: With dead ends: 40990 [2019-10-07 14:28:18,672 INFO L226 Difference]: Without dead ends: 21544 [2019-10-07 14:28:18,754 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 347 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:28:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21544 states. [2019-10-07 14:28:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21544 to 20291. [2019-10-07 14:28:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20291 states. [2019-10-07 14:28:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20291 states to 20291 states and 30360 transitions. [2019-10-07 14:28:20,041 INFO L78 Accepts]: Start accepts. Automaton has 20291 states and 30360 transitions. Word has length 177 [2019-10-07 14:28:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:20,042 INFO L462 AbstractCegarLoop]: Abstraction has 20291 states and 30360 transitions. [2019-10-07 14:28:20,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:28:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 20291 states and 30360 transitions. [2019-10-07 14:28:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-07 14:28:20,054 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:20,054 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:20,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:20,263 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1469003734, now seen corresponding path program 1 times [2019-10-07 14:28:20,263 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:20,264 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:20,264 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:20,264 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:28:20,414 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:20,414 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:21,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 14:28:21,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 14:28:21,191 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:21,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-07 14:28:21,503 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:28:21,503 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [9] total 17 [2019-10-07 14:28:21,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:28:21,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:28:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:28:21,505 INFO L87 Difference]: Start difference. First operand 20291 states and 30360 transitions. Second operand 10 states. [2019-10-07 14:28:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:26,853 INFO L93 Difference]: Finished difference Result 47472 states and 71557 transitions. [2019-10-07 14:28:26,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:28:26,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2019-10-07 14:28:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:26,994 INFO L225 Difference]: With dead ends: 47472 [2019-10-07 14:28:26,994 INFO L226 Difference]: Without dead ends: 28042 [2019-10-07 14:28:27,057 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:28:27,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28042 states. [2019-10-07 14:28:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28042 to 27775. [2019-10-07 14:28:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27775 states. [2019-10-07 14:28:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27775 states to 27775 states and 41518 transitions. [2019-10-07 14:28:28,172 INFO L78 Accepts]: Start accepts. Automaton has 27775 states and 41518 transitions. Word has length 173 [2019-10-07 14:28:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:28,173 INFO L462 AbstractCegarLoop]: Abstraction has 27775 states and 41518 transitions. [2019-10-07 14:28:28,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:28:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 27775 states and 41518 transitions. [2019-10-07 14:28:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-07 14:28:28,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:28,180 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:28,381 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:28,381 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:28,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1297961711, now seen corresponding path program 1 times [2019-10-07 14:28:28,382 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:28,382 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:28,382 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:28,382 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:28:28,571 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:28,571 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:29,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 14:28:29,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 14:28:29,635 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-07 14:28:30,030 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:30,031 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 10] total 23 [2019-10-07 14:28:30,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:28:30,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:28:30,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:28:30,032 INFO L87 Difference]: Start difference. First operand 27775 states and 41518 transitions. Second operand 9 states. [2019-10-07 14:28:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:33,048 INFO L93 Difference]: Finished difference Result 71990 states and 108321 transitions. [2019-10-07 14:28:33,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:28:33,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2019-10-07 14:28:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:33,278 INFO L225 Difference]: With dead ends: 71990 [2019-10-07 14:28:33,279 INFO L226 Difference]: Without dead ends: 45112 [2019-10-07 14:28:33,393 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2019-10-07 14:28:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45112 states. [2019-10-07 14:28:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45112 to 38754. [2019-10-07 14:28:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38754 states. [2019-10-07 14:28:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38754 states to 38754 states and 58099 transitions. [2019-10-07 14:28:35,281 INFO L78 Accepts]: Start accepts. Automaton has 38754 states and 58099 transitions. Word has length 174 [2019-10-07 14:28:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:35,282 INFO L462 AbstractCegarLoop]: Abstraction has 38754 states and 58099 transitions. [2019-10-07 14:28:35,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:28:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 38754 states and 58099 transitions. [2019-10-07 14:28:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:28:35,289 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:35,290 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:35,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:35,491 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:35,492 INFO L82 PathProgramCache]: Analyzing trace with hash 793531084, now seen corresponding path program 1 times [2019-10-07 14:28:35,492 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:35,493 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:35,493 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:35,493 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 14:28:35,628 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:35,629 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:36,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-07 14:28:36,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:36,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:36,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:28:36,548 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:36,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:28:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-07 14:28:37,064 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:37,064 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 12] total 28 [2019-10-07 14:28:37,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 14:28:37,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 14:28:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:28:37,065 INFO L87 Difference]: Start difference. First operand 38754 states and 58099 transitions. Second operand 15 states. [2019-10-07 14:28:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:52,754 INFO L93 Difference]: Finished difference Result 110953 states and 170947 transitions. [2019-10-07 14:28:52,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-07 14:28:52,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 172 [2019-10-07 14:28:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:53,133 INFO L225 Difference]: With dead ends: 110953 [2019-10-07 14:28:53,133 INFO L226 Difference]: Without dead ends: 73249 [2019-10-07 14:28:53,624 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 332 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=400, Invalid=2680, Unknown=0, NotChecked=0, Total=3080 [2019-10-07 14:28:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73249 states. [2019-10-07 14:28:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73249 to 68509. [2019-10-07 14:28:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68509 states. [2019-10-07 14:28:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68509 states to 68509 states and 101475 transitions. [2019-10-07 14:28:59,347 INFO L78 Accepts]: Start accepts. Automaton has 68509 states and 101475 transitions. Word has length 172 [2019-10-07 14:28:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:59,348 INFO L462 AbstractCegarLoop]: Abstraction has 68509 states and 101475 transitions. [2019-10-07 14:28:59,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 14:28:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 68509 states and 101475 transitions. [2019-10-07 14:28:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-07 14:28:59,355 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:59,355 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:59,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:59,556 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2050054289, now seen corresponding path program 1 times [2019-10-07 14:28:59,557 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:59,557 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:59,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:59,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:28:59,707 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:59,707 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:00,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 3372 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-07 14:29:00,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 14:29:00,550 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-07 14:29:00,906 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:29:00,934 INFO L162 IcfgInterpreter]: Started Sifa with 116 locations of interest [2019-10-07 14:29:00,934 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:29:00,941 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:29:00,949 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:29:00,952 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:29:44,666 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 754 [2019-10-07 14:29:49,356 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:29:49,722 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:29:50,261 WARN L191 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:29:51,088 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:29:51,635 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:52,101 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:52,552 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:53,058 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:53,948 WARN L191 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 1022 DAG size of output: 1020 [2019-10-07 14:29:54,530 WARN L191 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:55,032 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:55,480 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:55,934 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:56,427 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:29:56,444 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 376 for LOIs [2019-10-07 14:29:56,690 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 14:29:56,796 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 14:29:57,159 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 903 [2019-10-07 14:29:57,160 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1066 for LOIs [2019-10-07 14:29:57,602 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:29:58,034 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:29:58,146 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:58,858 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:59,299 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:29:59,749 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:29:59,864 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:00,604 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:01,076 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:01,513 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:01,752 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:02,550 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:03,362 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 1226 DAG size of output: 1066 [2019-10-07 14:30:03,815 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:03,967 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:04,698 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:05,140 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:05,570 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:05,679 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:06,383 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:06,812 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:07,247 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:07,356 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:08,065 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:08,495 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:08,922 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:09,031 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:09,741 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:10,184 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:10,617 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:10,725 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:11,443 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:11,881 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:12,316 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:12,425 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:13,157 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:13,589 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:14,028 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:14,139 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:14,861 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:15,307 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:15,739 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:15,850 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:16,580 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:17,020 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:17,453 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:17,562 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:18,291 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:18,723 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:19,166 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:30:19,274 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:19,995 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:21,571 WARN L191 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:22,287 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:22,411 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:23,148 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:24,437 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:30:25,160 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:25,281 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:26,006 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:26,733 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:27,458 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:27,567 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:28,284 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:29,967 WARN L191 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:30,766 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:30,880 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:31,618 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:32,857 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:30:33,586 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:33,707 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:34,435 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:35,669 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:30:36,412 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:36,525 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:37,251 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:37,973 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:38,693 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:38,806 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:39,547 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:40,271 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:41,005 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:41,121 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:41,862 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:42,619 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:43,355 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:43,472 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:44,207 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:45,462 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 14:30:46,212 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:46,342 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:47,089 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:47,830 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:48,567 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:48,679 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:49,440 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:50,829 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:30:51,561 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:51,685 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:52,434 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:53,763 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:30:54,506 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:54,625 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:55,352 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:56,103 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:56,844 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:56,955 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:57,691 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:59,006 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:30:59,755 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:59,875 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:00,619 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:01,359 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:02,090 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:02,208 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:02,950 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:04,201 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:04,923 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:05,033 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:05,770 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:07,070 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:07,795 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:07,912 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:08,637 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:09,883 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 14:31:10,619 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:10,737 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:11,480 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:31:12,826 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:13,564 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:13,682 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:14,411 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:15,730 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:16,468 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:16,587 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:17,315 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:18,052 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:18,795 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:18,906 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:19,650 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:21,237 WARN L191 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:21,970 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:22,096 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:22,841 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:24,177 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:24,925 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:25,043 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:25,790 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:26,517 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:27,257 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:27,367 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:28,086 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:29,404 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:30,136 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:30,254 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:30,987 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:31,764 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:32,516 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:32,634 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:33,359 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:34,582 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:35,462 WARN L191 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:35,574 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:36,312 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:37,614 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:38,334 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:38,451 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:39,192 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:40,497 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:41,220 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:41,337 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:42,073 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:43,394 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:31:44,131 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:44,248 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:44,977 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:45,724 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:46,456 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:46,566 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:31:47,299 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:31:48,604 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:49,355 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:49,473 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:50,211 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:51,481 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:31:52,231 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:52,350 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:53,094 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:53,839 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:54,573 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:31:54,688 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:55,432 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:56,748 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 14:31:57,478 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:57,614 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:31:58,336 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:59,584 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 14:32:00,317 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:00,459 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:01,190 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:02,457 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 14:32:03,189 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:03,307 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:04,031 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:05,305 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 14:32:06,042 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:06,317 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:07,125 WARN L191 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:08,464 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:09,217 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:09,337 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:10,075 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:11,379 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:12,093 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:12,216 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:12,944 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:13,702 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:14,437 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:14,548 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:15,263 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:16,061 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:16,799 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:16,915 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:17,644 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:18,402 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:19,124 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:19,247 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:19,984 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:20,733 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:21,462 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:21,575 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:22,308 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:23,607 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 14:32:24,330 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:24,455 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:25,172 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:26,389 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 14:32:27,126 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:27,242 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:27,961 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:29,254 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:29,971 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:30,088 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:30,820 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:32,125 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:32,853 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:32,967 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:33,711 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:35,031 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:35,751 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:35,865 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:36,581 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:37,892 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:32:38,621 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:38,742 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:39,463 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:40,201 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:40,935 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:41,046 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:41,766 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:42,532 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:43,272 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:43,395 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:44,142 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:44,880 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:45,611 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:45,744 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:32:46,480 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:46,491 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1090 for LOIs [2019-10-07 14:32:46,994 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:32:47,465 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:32:47,587 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:48,325 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:48,336 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1038 for LOIs [2019-10-07 14:32:48,743 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 1038 [2019-10-07 14:32:49,140 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 1038 [2019-10-07 14:32:49,251 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:32:49,968 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:32:50,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:50,234 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: ε 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: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:32:50,241 INFO L168 Benchmark]: Toolchain (without parser) took 338564.37 ms. Allocated memory was 138.9 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 101.0 MB in the beginning and 969.0 MB in the end (delta: -868.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,241 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1034.37 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 143.7 MB in the end (delta: -42.9 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,242 INFO L168 Benchmark]: Boogie Preprocessor took 201.03 ms. Allocated memory is still 203.4 MB. Free memory was 143.7 MB in the beginning and 134.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,242 INFO L168 Benchmark]: RCFGBuilder took 5038.39 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 134.5 MB in the beginning and 215.6 MB in the end (delta: -81.0 MB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,242 INFO L168 Benchmark]: TraceAbstraction took 332282.17 ms. Allocated memory was 303.0 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 215.6 MB in the beginning and 969.0 MB in the end (delta: -753.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:32:50,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1034.37 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 143.7 MB in the end (delta: -42.9 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.03 ms. Allocated memory is still 203.4 MB. Free memory was 143.7 MB in the beginning and 134.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5038.39 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 134.5 MB in the beginning and 215.6 MB in the end (delta: -81.0 MB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 332282.17 ms. Allocated memory was 303.0 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 215.6 MB in the beginning and 969.0 MB in the end (delta: -753.4 MB). Peak memory consumption was 2.4 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: 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...