java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:54:10,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:54:10,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:54:10,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:54:10,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:54:10,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:54:10,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:54:10,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:54:10,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:54:10,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:54:10,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:54:10,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:54:10,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:54:10,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:54:10,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:54:10,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:54:10,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:54:10,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:54:10,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:54:10,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:54:10,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:54:10,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:54:10,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:54:10,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:54:10,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:54:10,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:54:10,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:54:10,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:54:10,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:54:10,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:54:10,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:54:10,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:54:10,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:54:10,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:54:10,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:54:10,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:54:10,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:54:10,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:54:10,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:54:10,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:54:10,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:54:10,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 13:54:10,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:54:10,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:54:10,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:54:10,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:54:10,289 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:54:10,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:54:10,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:54:10,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:54:10,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:54:10,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:54:10,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:54:10,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:54:10,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:54:10,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:54:10,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:54:10,291 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:54:10,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:54:10,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:54:10,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:54:10,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:54:10,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:54:10,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:54:10,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:54:10,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:54:10,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:54:10,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:54:10,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:54:10,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:54:10,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:54:10,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:54:10,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:54:10,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:54:10,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:54:10,568 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:54:10,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-07 13:54:10,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5f53339/223a46c6d3334f1dbbbadfc259a70fa2/FLAG34f5f7f93 [2019-10-07 13:54:11,259 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:54:11,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-07 13:54:11,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5f53339/223a46c6d3334f1dbbbadfc259a70fa2/FLAG34f5f7f93 [2019-10-07 13:54:11,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5f53339/223a46c6d3334f1dbbbadfc259a70fa2 [2019-10-07 13:54:11,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:54:11,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:54:11,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:54:11,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:54:11,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:54:11,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:54:11" (1/1) ... [2019-10-07 13:54:11,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fe3b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:11, skipping insertion in model container [2019-10-07 13:54:11,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:54:11" (1/1) ... [2019-10-07 13:54:11,495 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:54:11,575 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:54:12,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:54:12,304 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:54:12,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:54:12,533 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:54:12,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12 WrapperNode [2019-10-07 13:54:12,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:54:12,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:54:12,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:54:12,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:54:12,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (1/1) ... [2019-10-07 13:54:12,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:54:12,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:54:12,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:54:12,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:54:12,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (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 13:54:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:54:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:54:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:54:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:54:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:54:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:54:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:54:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:54:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:54:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:54:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:54:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:54:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:54:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:54:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 13:54:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:54:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 13:54:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:54:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:54:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:54:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:54:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:54:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:54:12,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:54:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:54:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:54:12,811 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:54:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:54:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:54:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:54:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-07 13:54:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:54:12,813 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:54:12,814 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:54:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:54:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:54:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:54:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:54:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:54:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:54:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:54:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:54:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:54:12,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:54:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:54:12,819 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:54:12,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:54:12,819 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:54:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:54:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:54:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:54:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:54:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:54:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:54:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:54:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:54:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:54:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:54:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:54:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:54:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:54:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:54:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:54:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:54:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:54:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:54:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:54:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:54:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:54:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:54:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:54:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:54:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:54:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:54:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:54:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:54:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:54:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:54:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 13:54:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:54:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:54:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:54:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:54:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:54:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:54:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:54:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:54:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-07 13:54:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:54:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:54:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-07 13:54:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:54:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:54:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:54:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:54:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:54:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:54:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:54:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:54:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:54:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:54:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:54:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:54:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:54:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:54:17,487 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:54:17,488 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:54:17,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:54:17 BoogieIcfgContainer [2019-10-07 13:54:17,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:54:17,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:54:17,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:54:17,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:54:17,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:54:11" (1/3) ... [2019-10-07 13:54:17,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d5aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:54:17, skipping insertion in model container [2019-10-07 13:54:17,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:54:12" (2/3) ... [2019-10-07 13:54:17,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d5aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:54:17, skipping insertion in model container [2019-10-07 13:54:17,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:54:17" (3/3) ... [2019-10-07 13:54:17,499 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2019-10-07 13:54:17,508 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:54:17,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:54:17,529 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:54:17,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:54:17,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:54:17,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:54:17,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:54:17,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:54:17,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:54:17,569 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:54:17,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:54:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2019-10-07 13:54:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-07 13:54:17,630 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:17,631 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:17,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:17,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2001599510, now seen corresponding path program 1 times [2019-10-07 13:54:17,648 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:17,648 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:17,648 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:17,648 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:54:18,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:18,375 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:19,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 13:54:19,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:19,170 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:19,344 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:54:19,344 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-07 13:54:19,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:19,368 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2019-10-07 13:54:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:20,864 INFO L93 Difference]: Finished difference Result 1848 states and 2867 transitions. [2019-10-07 13:54:20,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:20,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-07 13:54:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:20,898 INFO L225 Difference]: With dead ends: 1848 [2019-10-07 13:54:20,898 INFO L226 Difference]: Without dead ends: 1363 [2019-10-07 13:54:20,907 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-10-07 13:54:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1275. [2019-10-07 13:54:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2019-10-07 13:54:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1957 transitions. [2019-10-07 13:54:21,112 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1957 transitions. Word has length 95 [2019-10-07 13:54:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:21,113 INFO L462 AbstractCegarLoop]: Abstraction has 1275 states and 1957 transitions. [2019-10-07 13:54:21,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1957 transitions. [2019-10-07 13:54:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-07 13:54:21,124 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:21,124 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:21,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:21,333 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:21,334 INFO L82 PathProgramCache]: Analyzing trace with hash -602275500, now seen corresponding path program 1 times [2019-10-07 13:54:21,334 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:21,335 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:21,335 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:21,336 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:21,759 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:21,759 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:21,759 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 13:54:21,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:54:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:54:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:54:21,763 INFO L87 Difference]: Start difference. First operand 1275 states and 1957 transitions. Second operand 9 states. [2019-10-07 13:54:26,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:26,996 INFO L93 Difference]: Finished difference Result 4262 states and 6656 transitions. [2019-10-07 13:54:26,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-07 13:54:27,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-07 13:54:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:27,024 INFO L225 Difference]: With dead ends: 4262 [2019-10-07 13:54:27,025 INFO L226 Difference]: Without dead ends: 3025 [2019-10-07 13:54:27,034 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-07 13:54:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2019-10-07 13:54:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2909. [2019-10-07 13:54:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2019-10-07 13:54:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4539 transitions. [2019-10-07 13:54:27,207 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4539 transitions. Word has length 137 [2019-10-07 13:54:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:27,211 INFO L462 AbstractCegarLoop]: Abstraction has 2909 states and 4539 transitions. [2019-10-07 13:54:27,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:54:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4539 transitions. [2019-10-07 13:54:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:54:27,219 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:27,219 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:27,220 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash 61989656, now seen corresponding path program 1 times [2019-10-07 13:54:27,220 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:27,220 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:27,220 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:27,221 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:27,478 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:27,478 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:27,478 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 13:54:27,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 13:54:27,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 13:54:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:54:27,480 INFO L87 Difference]: Start difference. First operand 2909 states and 4539 transitions. Second operand 10 states. [2019-10-07 13:54:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:28,622 INFO L93 Difference]: Finished difference Result 5694 states and 8909 transitions. [2019-10-07 13:54:28,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:54:28,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2019-10-07 13:54:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:28,642 INFO L225 Difference]: With dead ends: 5694 [2019-10-07 13:54:28,642 INFO L226 Difference]: Without dead ends: 2822 [2019-10-07 13:54:28,657 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:54:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2019-10-07 13:54:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2808. [2019-10-07 13:54:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2019-10-07 13:54:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4330 transitions. [2019-10-07 13:54:28,793 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4330 transitions. Word has length 141 [2019-10-07 13:54:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:28,794 INFO L462 AbstractCegarLoop]: Abstraction has 2808 states and 4330 transitions. [2019-10-07 13:54:28,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 13:54:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4330 transitions. [2019-10-07 13:54:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-07 13:54:28,798 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:28,799 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:28,799 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash 631605660, now seen corresponding path program 1 times [2019-10-07 13:54:28,799 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:28,800 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:28,800 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:28,800 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:28,977 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:28,977 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:28,977 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:28,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:28,978 INFO L87 Difference]: Start difference. First operand 2808 states and 4330 transitions. Second operand 7 states. [2019-10-07 13:54:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:29,104 INFO L93 Difference]: Finished difference Result 4576 states and 7127 transitions. [2019-10-07 13:54:29,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:54:29,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-07 13:54:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:29,125 INFO L225 Difference]: With dead ends: 4576 [2019-10-07 13:54:29,125 INFO L226 Difference]: Without dead ends: 2878 [2019-10-07 13:54:29,136 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2019-10-07 13:54:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2850. [2019-10-07 13:54:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2019-10-07 13:54:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4390 transitions. [2019-10-07 13:54:29,385 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4390 transitions. Word has length 142 [2019-10-07 13:54:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:29,386 INFO L462 AbstractCegarLoop]: Abstraction has 2850 states and 4390 transitions. [2019-10-07 13:54:29,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4390 transitions. [2019-10-07 13:54:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-07 13:54:29,390 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:29,391 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:29,391 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash -353337476, now seen corresponding path program 1 times [2019-10-07 13:54:29,391 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:29,392 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:29,392 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:29,392 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:29,613 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:29,613 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:29,613 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:29,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:29,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:29,615 INFO L87 Difference]: Start difference. First operand 2850 states and 4390 transitions. Second operand 7 states. [2019-10-07 13:54:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:29,751 INFO L93 Difference]: Finished difference Result 4634 states and 7203 transitions. [2019-10-07 13:54:29,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:54:29,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-07 13:54:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:29,770 INFO L225 Difference]: With dead ends: 4634 [2019-10-07 13:54:29,770 INFO L226 Difference]: Without dead ends: 2908 [2019-10-07 13:54:29,782 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2019-10-07 13:54:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2856. [2019-10-07 13:54:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2019-10-07 13:54:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4396 transitions. [2019-10-07 13:54:29,909 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4396 transitions. Word has length 142 [2019-10-07 13:54:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:29,909 INFO L462 AbstractCegarLoop]: Abstraction has 2856 states and 4396 transitions. [2019-10-07 13:54:29,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4396 transitions. [2019-10-07 13:54:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:54:29,914 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:29,914 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:29,914 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:29,915 INFO L82 PathProgramCache]: Analyzing trace with hash 641621857, now seen corresponding path program 1 times [2019-10-07 13:54:29,915 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:29,916 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:29,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:29,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:30,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:30,104 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:30,104 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:30,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:30,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:30,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:30,106 INFO L87 Difference]: Start difference. First operand 2856 states and 4396 transitions. Second operand 7 states. [2019-10-07 13:54:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:30,223 INFO L93 Difference]: Finished difference Result 4644 states and 7213 transitions. [2019-10-07 13:54:30,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:54:30,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-07 13:54:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:30,242 INFO L225 Difference]: With dead ends: 4644 [2019-10-07 13:54:30,243 INFO L226 Difference]: Without dead ends: 2914 [2019-10-07 13:54:30,252 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2019-10-07 13:54:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2862. [2019-10-07 13:54:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2862 states. [2019-10-07 13:54:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4402 transitions. [2019-10-07 13:54:30,393 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4402 transitions. Word has length 141 [2019-10-07 13:54:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:30,395 INFO L462 AbstractCegarLoop]: Abstraction has 2862 states and 4402 transitions. [2019-10-07 13:54:30,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4402 transitions. [2019-10-07 13:54:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-07 13:54:30,400 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:30,400 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:30,400 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:30,401 INFO L82 PathProgramCache]: Analyzing trace with hash -55837836, now seen corresponding path program 1 times [2019-10-07 13:54:30,402 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:30,402 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:30,402 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:30,402 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:30,727 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:30,728 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:30,728 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:30,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:30,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:30,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:30,730 INFO L87 Difference]: Start difference. First operand 2862 states and 4402 transitions. Second operand 7 states. [2019-10-07 13:54:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:34,354 INFO L93 Difference]: Finished difference Result 6470 states and 10173 transitions. [2019-10-07 13:54:34,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 13:54:34,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2019-10-07 13:54:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:34,380 INFO L225 Difference]: With dead ends: 6470 [2019-10-07 13:54:34,380 INFO L226 Difference]: Without dead ends: 4486 [2019-10-07 13:54:34,394 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2019-10-07 13:54:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4286. [2019-10-07 13:54:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4286 states. [2019-10-07 13:54:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6496 transitions. [2019-10-07 13:54:34,597 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6496 transitions. Word has length 146 [2019-10-07 13:54:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:34,598 INFO L462 AbstractCegarLoop]: Abstraction has 4286 states and 6496 transitions. [2019-10-07 13:54:34,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6496 transitions. [2019-10-07 13:54:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 13:54:34,602 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:34,602 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:34,603 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:34,603 INFO L82 PathProgramCache]: Analyzing trace with hash 819540633, now seen corresponding path program 1 times [2019-10-07 13:54:34,604 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:34,604 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:34,604 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:34,604 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:34,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:34,826 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:34,826 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:54:34,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:54:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:54:34,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:34,828 INFO L87 Difference]: Start difference. First operand 4286 states and 6496 transitions. Second operand 6 states. [2019-10-07 13:54:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:40,089 INFO L93 Difference]: Finished difference Result 14202 states and 23646 transitions. [2019-10-07 13:54:40,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 13:54:40,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-10-07 13:54:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:40,144 INFO L225 Difference]: With dead ends: 14202 [2019-10-07 13:54:40,144 INFO L226 Difference]: Without dead ends: 9953 [2019-10-07 13:54:40,172 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:54:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2019-10-07 13:54:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 9315. [2019-10-07 13:54:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9315 states. [2019-10-07 13:54:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9315 states to 9315 states and 14681 transitions. [2019-10-07 13:54:40,632 INFO L78 Accepts]: Start accepts. Automaton has 9315 states and 14681 transitions. Word has length 149 [2019-10-07 13:54:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:40,635 INFO L462 AbstractCegarLoop]: Abstraction has 9315 states and 14681 transitions. [2019-10-07 13:54:40,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:54:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9315 states and 14681 transitions. [2019-10-07 13:54:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-07 13:54:40,640 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:40,640 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:40,640 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash -463931423, now seen corresponding path program 1 times [2019-10-07 13:54:40,641 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:40,641 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:40,645 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:40,645 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:40,828 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:40,828 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:40,829 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:40,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:40,831 INFO L87 Difference]: Start difference. First operand 9315 states and 14681 transitions. Second operand 7 states. [2019-10-07 13:54:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:44,919 INFO L93 Difference]: Finished difference Result 16953 states and 27500 transitions. [2019-10-07 13:54:44,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:54:44,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2019-10-07 13:54:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:44,973 INFO L225 Difference]: With dead ends: 16953 [2019-10-07 13:54:44,974 INFO L226 Difference]: Without dead ends: 9955 [2019-10-07 13:54:45,000 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:54:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2019-10-07 13:54:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 9423. [2019-10-07 13:54:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9423 states. [2019-10-07 13:54:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 14817 transitions. [2019-10-07 13:54:46,242 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 14817 transitions. Word has length 150 [2019-10-07 13:54:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:46,242 INFO L462 AbstractCegarLoop]: Abstraction has 9423 states and 14817 transitions. [2019-10-07 13:54:46,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 14817 transitions. [2019-10-07 13:54:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:54:46,248 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:46,248 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:46,249 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -522564316, now seen corresponding path program 1 times [2019-10-07 13:54:46,249 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:46,249 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:46,249 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:46,250 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:46,403 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:46,403 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:47,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 3237 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:47,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:47,057 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:47,231 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:47,231 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:54:47,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:54:47,233 INFO L87 Difference]: Start difference. First operand 9423 states and 14817 transitions. Second operand 4 states. [2019-10-07 13:54:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:47,501 INFO L93 Difference]: Finished difference Result 18983 states and 30939 transitions. [2019-10-07 13:54:47,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:54:47,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-07 13:54:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:47,683 INFO L225 Difference]: With dead ends: 18983 [2019-10-07 13:54:47,683 INFO L226 Difference]: Without dead ends: 9597 [2019-10-07 13:54:47,712 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9597 states. [2019-10-07 13:54:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9597 to 9597. [2019-10-07 13:54:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9597 states. [2019-10-07 13:54:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9597 states to 9597 states and 14991 transitions. [2019-10-07 13:54:48,232 INFO L78 Accepts]: Start accepts. Automaton has 9597 states and 14991 transitions. Word has length 155 [2019-10-07 13:54:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:48,233 INFO L462 AbstractCegarLoop]: Abstraction has 9597 states and 14991 transitions. [2019-10-07 13:54:48,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9597 states and 14991 transitions. [2019-10-07 13:54:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-07 13:54:48,238 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:48,239 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:48,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:48,447 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:48,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2092790917, now seen corresponding path program 1 times [2019-10-07 13:54:48,448 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:48,448 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:48,448 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:48,448 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:48,611 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:48,611 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:49,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:49,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:54:49,196 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:49,350 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:54:49,350 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:54:49,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:49,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:49,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:49,351 INFO L87 Difference]: Start difference. First operand 9597 states and 14991 transitions. Second operand 5 states. [2019-10-07 13:54:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:49,797 INFO L93 Difference]: Finished difference Result 19244 states and 31023 transitions. [2019-10-07 13:54:49,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:54:49,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-07 13:54:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:49,835 INFO L225 Difference]: With dead ends: 19244 [2019-10-07 13:54:49,835 INFO L226 Difference]: Without dead ends: 9568 [2019-10-07 13:54:49,867 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:54:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9568 states. [2019-10-07 13:54:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9568 to 9568. [2019-10-07 13:54:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9568 states. [2019-10-07 13:54:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 14875 transitions. [2019-10-07 13:54:50,301 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 14875 transitions. Word has length 157 [2019-10-07 13:54:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:50,302 INFO L462 AbstractCegarLoop]: Abstraction has 9568 states and 14875 transitions. [2019-10-07 13:54:50,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 14875 transitions. [2019-10-07 13:54:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-07 13:54:50,311 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:50,311 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:54:50,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:50,522 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 717148987, now seen corresponding path program 1 times [2019-10-07 13:54:50,523 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:50,523 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:50,523 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:50,524 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:54:50,697 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:50,697 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:51,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:51,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:51,338 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:51,558 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:51,559 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:54:51,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:54:51,562 INFO L87 Difference]: Start difference. First operand 9568 states and 14875 transitions. Second operand 5 states. [2019-10-07 13:54:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:53,178 INFO L93 Difference]: Finished difference Result 25608 states and 43230 transitions. [2019-10-07 13:54:53,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:53,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-07 13:54:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:53,249 INFO L225 Difference]: With dead ends: 25608 [2019-10-07 13:54:53,250 INFO L226 Difference]: Without dead ends: 16077 [2019-10-07 13:54:53,293 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:54:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16077 states. [2019-10-07 13:54:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16077 to 15821. [2019-10-07 13:54:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15821 states. [2019-10-07 13:54:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15821 states to 15821 states and 25627 transitions. [2019-10-07 13:54:53,881 INFO L78 Accepts]: Start accepts. Automaton has 15821 states and 25627 transitions. Word has length 157 [2019-10-07 13:54:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:53,882 INFO L462 AbstractCegarLoop]: Abstraction has 15821 states and 25627 transitions. [2019-10-07 13:54:53,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 15821 states and 25627 transitions. [2019-10-07 13:54:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 13:54:53,887 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:53,887 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:54:54,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:54,095 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:54,095 INFO L82 PathProgramCache]: Analyzing trace with hash -910541322, now seen corresponding path program 1 times [2019-10-07 13:54:54,095 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:54,095 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:54,095 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:54,095 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:54,255 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:54,255 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:55,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:54:55,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:54:55,810 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:56,127 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:56,127 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:54:56,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:56,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:56,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:54:56,130 INFO L87 Difference]: Start difference. First operand 15821 states and 25627 transitions. Second operand 7 states. [2019-10-07 13:54:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:57,889 INFO L93 Difference]: Finished difference Result 36045 states and 62787 transitions. [2019-10-07 13:54:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:54:57,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2019-10-07 13:54:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:57,993 INFO L225 Difference]: With dead ends: 36045 [2019-10-07 13:54:57,994 INFO L226 Difference]: Without dead ends: 20261 [2019-10-07 13:54:58,052 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 305 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:54:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20261 states. [2019-10-07 13:54:58,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20261 to 20195. [2019-10-07 13:54:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20195 states. [2019-10-07 13:54:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20195 states to 20195 states and 36631 transitions. [2019-10-07 13:54:58,978 INFO L78 Accepts]: Start accepts. Automaton has 20195 states and 36631 transitions. Word has length 158 [2019-10-07 13:54:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:58,979 INFO L462 AbstractCegarLoop]: Abstraction has 20195 states and 36631 transitions. [2019-10-07 13:54:58,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20195 states and 36631 transitions. [2019-10-07 13:54:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 13:54:58,983 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:58,984 INFO L385 BasicCegarLoop]: trace histogram [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 13:54:59,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:59,191 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1096697115, now seen corresponding path program 1 times [2019-10-07 13:54:59,192 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:59,192 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:59,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:59,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:59,339 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:59,339 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:59,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:59,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:55:00,001 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:00,194 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:55:00,194 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:55:00,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:55:00,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:55:00,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:55:00,195 INFO L87 Difference]: Start difference. First operand 20195 states and 36631 transitions. Second operand 5 states. [2019-10-07 13:55:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:01,492 INFO L93 Difference]: Finished difference Result 40838 states and 78556 transitions. [2019-10-07 13:55:01,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:55:01,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-07 13:55:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:01,566 INFO L225 Difference]: With dead ends: 40838 [2019-10-07 13:55:01,566 INFO L226 Difference]: Without dead ends: 20693 [2019-10-07 13:55:01,647 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:55:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20693 states. [2019-10-07 13:55:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20693 to 20432. [2019-10-07 13:55:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20432 states. [2019-10-07 13:55:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20432 states to 20432 states and 36897 transitions. [2019-10-07 13:55:02,860 INFO L78 Accepts]: Start accepts. Automaton has 20432 states and 36897 transitions. Word has length 158 [2019-10-07 13:55:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:02,860 INFO L462 AbstractCegarLoop]: Abstraction has 20432 states and 36897 transitions. [2019-10-07 13:55:02,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:55:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 20432 states and 36897 transitions. [2019-10-07 13:55:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 13:55:02,869 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:02,869 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:55:03,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:03,077 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:03,078 INFO L82 PathProgramCache]: Analyzing trace with hash 674705164, now seen corresponding path program 1 times [2019-10-07 13:55:03,078 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:03,078 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:03,078 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:03,078 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:55:03,202 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:03,202 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:55:03,202 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:55:03,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:55:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:55:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:55:03,203 INFO L87 Difference]: Start difference. First operand 20432 states and 36897 transitions. Second operand 4 states. [2019-10-07 13:55:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:03,945 INFO L93 Difference]: Finished difference Result 39566 states and 75886 transitions. [2019-10-07 13:55:03,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:55:03,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-07 13:55:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:04,021 INFO L225 Difference]: With dead ends: 39566 [2019-10-07 13:55:04,021 INFO L226 Difference]: Without dead ends: 21184 [2019-10-07 13:55:04,105 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:55:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21184 states. [2019-10-07 13:55:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21184 to 21184. [2019-10-07 13:55:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21184 states. [2019-10-07 13:55:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21184 states to 21184 states and 38116 transitions. [2019-10-07 13:55:06,410 INFO L78 Accepts]: Start accepts. Automaton has 21184 states and 38116 transitions. Word has length 161 [2019-10-07 13:55:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:06,410 INFO L462 AbstractCegarLoop]: Abstraction has 21184 states and 38116 transitions. [2019-10-07 13:55:06,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:55:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21184 states and 38116 transitions. [2019-10-07 13:55:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-07 13:55:06,414 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:06,414 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:55:06,414 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1774319893, now seen corresponding path program 1 times [2019-10-07 13:55:06,415 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:06,415 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:06,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:06,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:06,563 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:06,563 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:07,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:55:07,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:55:07,241 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:07,397 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:07,397 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2019-10-07 13:55:07,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:55:07,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:55:07,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:55:07,398 INFO L87 Difference]: Start difference. First operand 21184 states and 38116 transitions. Second operand 4 states. [2019-10-07 13:55:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:08,405 INFO L93 Difference]: Finished difference Result 43383 states and 83217 transitions. [2019-10-07 13:55:08,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:55:08,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-07 13:55:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:08,487 INFO L225 Difference]: With dead ends: 43383 [2019-10-07 13:55:08,487 INFO L226 Difference]: Without dead ends: 22250 [2019-10-07 13:55:08,579 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:55:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22250 states. [2019-10-07 13:55:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22250 to 22056. [2019-10-07 13:55:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22056 states. [2019-10-07 13:55:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22056 states to 22056 states and 39512 transitions. [2019-10-07 13:55:09,611 INFO L78 Accepts]: Start accepts. Automaton has 22056 states and 39512 transitions. Word has length 160 [2019-10-07 13:55:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:09,611 INFO L462 AbstractCegarLoop]: Abstraction has 22056 states and 39512 transitions. [2019-10-07 13:55:09,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:55:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 22056 states and 39512 transitions. [2019-10-07 13:55:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-07 13:55:09,615 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:09,615 INFO L385 BasicCegarLoop]: trace histogram [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 13:55:09,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:09,822 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash -543082207, now seen corresponding path program 1 times [2019-10-07 13:55:09,823 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:09,823 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:09,824 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:09,824 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:09,966 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:09,966 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:10,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:55:10,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:55:10,653 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:10,835 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:10,835 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 12 [2019-10-07 13:55:10,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:55:10,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:55:10,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:55:10,836 INFO L87 Difference]: Start difference. First operand 22056 states and 39512 transitions. Second operand 5 states. [2019-10-07 13:55:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:13,371 INFO L93 Difference]: Finished difference Result 56025 states and 113944 transitions. [2019-10-07 13:55:13,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:55:13,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2019-10-07 13:55:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:13,523 INFO L225 Difference]: With dead ends: 56025 [2019-10-07 13:55:13,523 INFO L226 Difference]: Without dead ends: 36656 [2019-10-07 13:55:13,635 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 322 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:55:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36656 states. [2019-10-07 13:55:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36656 to 35531. [2019-10-07 13:55:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35531 states. [2019-10-07 13:55:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35531 states to 35531 states and 70785 transitions. [2019-10-07 13:55:17,320 INFO L78 Accepts]: Start accepts. Automaton has 35531 states and 70785 transitions. Word has length 162 [2019-10-07 13:55:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:17,321 INFO L462 AbstractCegarLoop]: Abstraction has 35531 states and 70785 transitions. [2019-10-07 13:55:17,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:55:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 35531 states and 70785 transitions. [2019-10-07 13:55:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-07 13:55:17,323 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:17,324 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:55:17,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:17,528 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1486579979, now seen corresponding path program 1 times [2019-10-07 13:55:17,529 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:17,529 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:17,529 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:17,529 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:17,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:17,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:18,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 3253 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:55:18,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:55:18,318 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:18,439 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:18,439 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 13:55:18,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:55:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:55:18,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:55:18,440 INFO L87 Difference]: Start difference. First operand 35531 states and 70785 transitions. Second operand 4 states. [2019-10-07 13:55:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:20,181 INFO L93 Difference]: Finished difference Result 69462 states and 148642 transitions. [2019-10-07 13:55:20,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:55:20,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-10-07 13:55:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:20,315 INFO L225 Difference]: With dead ends: 69462 [2019-10-07 13:55:20,315 INFO L226 Difference]: Without dead ends: 33982 [2019-10-07 13:55:20,516 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:55:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33982 states. [2019-10-07 13:55:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33982 to 32954. [2019-10-07 13:55:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32954 states. [2019-10-07 13:55:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32954 states to 32954 states and 62525 transitions. [2019-10-07 13:55:21,913 INFO L78 Accepts]: Start accepts. Automaton has 32954 states and 62525 transitions. Word has length 162 [2019-10-07 13:55:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:21,913 INFO L462 AbstractCegarLoop]: Abstraction has 32954 states and 62525 transitions. [2019-10-07 13:55:21,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:55:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32954 states and 62525 transitions. [2019-10-07 13:55:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-07 13:55:21,916 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:21,916 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:55:22,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:22,117 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash 273603474, now seen corresponding path program 1 times [2019-10-07 13:55:22,119 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:22,119 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:22,119 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:22,120 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 13:55:22,251 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:22,251 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:22,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 3255 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:55:22,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:55:22,979 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:23,147 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:55:23,147 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 13:55:23,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:55:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:55:23,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:55:23,149 INFO L87 Difference]: Start difference. First operand 32954 states and 62525 transitions. Second operand 4 states. [2019-10-07 13:55:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:24,873 INFO L93 Difference]: Finished difference Result 67280 states and 143488 transitions. [2019-10-07 13:55:24,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:55:24,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-07 13:55:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:25,033 INFO L225 Difference]: With dead ends: 67280 [2019-10-07 13:55:25,033 INFO L226 Difference]: Without dead ends: 34377 [2019-10-07 13:55:25,235 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:55:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34377 states. [2019-10-07 13:55:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34377 to 33686. [2019-10-07 13:55:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33686 states. [2019-10-07 13:55:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33686 states to 33686 states and 63614 transitions. [2019-10-07 13:55:29,240 INFO L78 Accepts]: Start accepts. Automaton has 33686 states and 63614 transitions. Word has length 166 [2019-10-07 13:55:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:29,241 INFO L462 AbstractCegarLoop]: Abstraction has 33686 states and 63614 transitions. [2019-10-07 13:55:29,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:55:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 33686 states and 63614 transitions. [2019-10-07 13:55:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 13:55:29,246 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:29,246 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:55:29,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:29,453 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:29,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:29,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1461347900, now seen corresponding path program 1 times [2019-10-07 13:55:29,454 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:29,454 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:29,454 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:29,455 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:55:29,597 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:29,597 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:30,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:55:30,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:55:30,360 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:30,559 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:30,559 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-07 13:55:30,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:55:30,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:55:30,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:55:30,560 INFO L87 Difference]: Start difference. First operand 33686 states and 63614 transitions. Second operand 5 states. [2019-10-07 13:55:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:33,687 INFO L93 Difference]: Finished difference Result 80142 states and 167413 transitions. [2019-10-07 13:55:33,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:55:33,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2019-10-07 13:55:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:33,884 INFO L225 Difference]: With dead ends: 80142 [2019-10-07 13:55:33,884 INFO L226 Difference]: Without dead ends: 49851 [2019-10-07 13:55:34,076 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:55:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49851 states. [2019-10-07 13:55:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49851 to 48903. [2019-10-07 13:55:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48903 states. [2019-10-07 13:55:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48903 states to 48903 states and 100715 transitions. [2019-10-07 13:55:39,586 INFO L78 Accepts]: Start accepts. Automaton has 48903 states and 100715 transitions. Word has length 172 [2019-10-07 13:55:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:39,586 INFO L462 AbstractCegarLoop]: Abstraction has 48903 states and 100715 transitions. [2019-10-07 13:55:39,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:55:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 48903 states and 100715 transitions. [2019-10-07 13:55:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 13:55:39,591 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:39,592 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:55:39,798 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:39,799 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:39,800 INFO L82 PathProgramCache]: Analyzing trace with hash -727714497, now seen corresponding path program 1 times [2019-10-07 13:55:39,800 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:39,801 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:39,801 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:39,801 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:55:39,940 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:39,940 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:40,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:55:40,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:55:40,652 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:40,860 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:40,860 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 12 [2019-10-07 13:55:40,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:55:40,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:55:40,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:55:40,860 INFO L87 Difference]: Start difference. First operand 48903 states and 100715 transitions. Second operand 5 states. [2019-10-07 13:55:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:55:45,003 INFO L93 Difference]: Finished difference Result 110501 states and 247036 transitions. [2019-10-07 13:55:45,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:55:45,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2019-10-07 13:55:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:55:45,371 INFO L225 Difference]: With dead ends: 110501 [2019-10-07 13:55:45,371 INFO L226 Difference]: Without dead ends: 65066 [2019-10-07 13:55:45,782 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:55:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65066 states. [2019-10-07 13:55:54,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65066 to 63766. [2019-10-07 13:55:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63766 states. [2019-10-07 13:55:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63766 states to 63766 states and 142240 transitions. [2019-10-07 13:55:54,936 INFO L78 Accepts]: Start accepts. Automaton has 63766 states and 142240 transitions. Word has length 172 [2019-10-07 13:55:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:55:54,937 INFO L462 AbstractCegarLoop]: Abstraction has 63766 states and 142240 transitions. [2019-10-07 13:55:54,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:55:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 63766 states and 142240 transitions. [2019-10-07 13:55:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-07 13:55:54,942 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:55:54,942 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:55:55,151 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:55,151 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:55:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:55:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1601434167, now seen corresponding path program 1 times [2019-10-07 13:55:55,152 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:55:55,152 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:55,152 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:55,152 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:55:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:55:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:55:55,323 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:55:55,323 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:55:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:55:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:55:56,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:55:56,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:55:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:55:56,052 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:55:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:55:56,193 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:55:56,194 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 6 [2019-10-07 13:55:56,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:55:56,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:55:56,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:55:56,196 INFO L87 Difference]: Start difference. First operand 63766 states and 142240 transitions. Second operand 3 states. [2019-10-07 13:56:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:56:04,211 INFO L93 Difference]: Finished difference Result 181061 states and 531467 transitions. [2019-10-07 13:56:04,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:56:04,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-07 13:56:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:56:04,949 INFO L225 Difference]: With dead ends: 181061 [2019-10-07 13:56:04,949 INFO L226 Difference]: Without dead ends: 117359 [2019-10-07 13:56:12,065 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:56:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117359 states. [2019-10-07 13:56:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117359 to 102397. [2019-10-07 13:56:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102397 states. [2019-10-07 13:56:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102397 states to 102397 states and 292692 transitions. [2019-10-07 13:56:24,314 INFO L78 Accepts]: Start accepts. Automaton has 102397 states and 292692 transitions. Word has length 173 [2019-10-07 13:56:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:56:24,315 INFO L462 AbstractCegarLoop]: Abstraction has 102397 states and 292692 transitions. [2019-10-07 13:56:24,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:56:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 102397 states and 292692 transitions. [2019-10-07 13:56:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-07 13:56:24,319 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:56:24,319 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2019-10-07 13:56:25,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:25,293 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:56:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:56:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash 277557259, now seen corresponding path program 1 times [2019-10-07 13:56:25,294 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:56:25,294 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:25,294 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:25,294 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:56:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:56:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 13:56:25,420 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:56:25,420 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:56:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:56:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:56:26,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:56:26,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:56:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:56:26,218 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:56:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:56:26,447 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:56:26,493 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-07 13:56:26,493 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:56:26,503 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:56:26,512 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:56:26,513 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:57:15,313 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 767 [2019-10-07 13:57:20,039 WARN L191 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 13:57:21,082 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 13:57:21,488 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 13:57:21,764 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 13:57:22,324 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:22,804 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:23,861 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:24,400 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:25,860 WARN L191 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 1046 DAG size of output: 1044 [2019-10-07 13:57:26,317 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:26,846 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:27,874 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:28,336 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:28,844 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:57:28,861 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 385 for LOIs [2019-10-07 13:57:29,058 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 13:57:29,741 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 13:57:30,099 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 13:57:30,100 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1090 for LOIs [2019-10-07 13:57:30,551 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:30,999 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:36,670 WARN L191 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:37,418 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:37,878 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:38,333 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:38,456 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:39,217 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:39,700 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:40,147 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:40,269 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:41,016 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:41,864 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 1090 [2019-10-07 13:57:42,311 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:42,562 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:43,412 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:43,876 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:44,324 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:44,436 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:45,182 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:45,628 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:46,085 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:46,200 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:46,946 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:47,402 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:47,850 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:47,963 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:48,711 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:49,170 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:49,621 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:49,735 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:50,489 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:50,937 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:51,384 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:51,500 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:52,247 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:52,695 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:53,144 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:53,264 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:54,015 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:54,463 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:54,915 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:55,028 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:55,771 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:56,227 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:56,673 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:56,786 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:57,532 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:57:57,981 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:58,428 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:57:58,543 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:57:59,301 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:00,188 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:00,944 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:01,070 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:01,813 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:03,337 WARN L191 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:04,092 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:04,219 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:04,962 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:05,707 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:06,448 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:06,561 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:07,302 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:08,413 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:58:09,161 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:58:09,286 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:10,028 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:10,787 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:11,531 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:11,652 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:12,394 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:13,670 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 13:58:14,403 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:58:14,517 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:15,252 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:15,985 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:58:16,718 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:58:16,837 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:17,566 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:18,299 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:19,034 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:19,154 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:19,898 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:20,667 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:21,404 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:21,527 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:22,260 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:23,602 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 13:58:24,340 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:24,466 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:25,211 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:25,948 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:26,685 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:26,798 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:27,540 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:28,893 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:29,622 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:29,768 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:30,500 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:31,824 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:32,558 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:32,686 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:33,420 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:34,149 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:34,897 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:35,009 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:35,750 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:36,523 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:37,264 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:37,385 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:38,130 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:38,884 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:39,633 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:39,753 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:40,491 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:41,232 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:41,970 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:42,083 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:42,819 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:44,142 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1256 [2019-10-07 13:58:44,875 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:44,995 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:45,730 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:58:47,006 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 13:58:47,753 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:47,872 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:58:48,611 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:58:49,975 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:50,722 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:50,840 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:51,572 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:52,909 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:53,647 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:53,765 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:54,491 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:55,224 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:55,965 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:56,077 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:56,810 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:58,278 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:58:59,014 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:58:59,134 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:58:59,863 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:01,197 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:59:01,927 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:02,051 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:02,779 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:03,508 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:04,242 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:04,356 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:05,094 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:06,480 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:07,226 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:07,345 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:08,087 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:08,845 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:09,586 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:09,721 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:10,466 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:11,814 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:59:12,561 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:12,680 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:13,415 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:14,754 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:59:15,494 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:15,612 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:16,352 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:17,098 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:17,828 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:17,940 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:18,683 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:20,058 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 13:59:20,799 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:59:20,919 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:21,663 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:22,959 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 13:59:23,694 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:59:23,814 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:24,542 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:25,864 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1256 DAG size of output: 1254 [2019-10-07 13:59:26,600 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:59:26,713 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:27,454 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:28,766 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 13:59:29,495 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 13:59:29,637 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:30,370 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:31,711 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:59:32,446 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:32,566 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:33,295 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:34,628 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 13:59:35,362 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:35,479 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:36,210 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:36,953 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:37,696 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:37,808 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 13:59:38,532 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 13:59:39,894 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:40,625 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:40,744 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:41,487 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:42,833 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:43,570 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:43,688 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:44,430 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:45,908 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 13:59:46,652 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:46,765 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:47,504 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:48,840 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1256 [2019-10-07 13:59:49,575 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:49,693 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:50,426 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 13:59:51,705 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 13:59:52,470 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:52,717 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:53,533 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:54,811 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 13:59:55,549 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:55,667 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:56,408 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:57,688 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1258 [2019-10-07 13:59:58,425 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 13:59:58,542 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 13:59:59,284 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:00:00,740 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:00:01,471 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:01,605 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:02,405 WARN L191 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:03,731 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:00:04,471 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:04,592 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:05,318 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:06,651 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:00:07,381 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:07,498 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:08,239 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:09,562 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:00:10,295 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:10,411 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:11,142 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:11,882 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:12,615 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:12,734 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:13,467 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:14,304 WARN L191 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:15,052 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:15,186 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:00:15,924 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:17,268 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:18,016 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:18,133 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:00:18,866 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:20,192 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:00:20,929 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:21,048 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:00:21,789 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:23,115 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:00:23,851 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:00:23,968 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:00:24,707 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:26,017 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:00:26,765 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:00:26,892 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:00:27,625 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:00:27,631 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1114 for LOIs [2019-10-07 14:00:28,112 WARN L191 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:00:28,596 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:00:28,711 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:29,441 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:29,451 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1068 for LOIs [2019-10-07 14:00:29,855 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:30,260 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:30,381 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:00:31,113 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:00:31,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:31,368 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:00:31,373 INFO L168 Benchmark]: Toolchain (without parser) took 379899.34 ms. Allocated memory was 137.9 MB in the beginning and 3.6 GB in the end (delta: 3.4 GB). Free memory was 98.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,373 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1058.72 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 98.4 MB in the beginning and 141.6 MB in the end (delta: -43.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,374 INFO L168 Benchmark]: Boogie Preprocessor took 193.55 ms. Allocated memory is still 202.4 MB. Free memory was 141.6 MB in the beginning and 132.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,374 INFO L168 Benchmark]: RCFGBuilder took 4763.04 ms. Allocated memory was 202.4 MB in the beginning and 300.4 MB in the end (delta: 98.0 MB). Free memory was 132.4 MB in the beginning and 222.6 MB in the end (delta: -90.2 MB). Peak memory consumption was 157.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,374 INFO L168 Benchmark]: TraceAbstraction took 373879.49 ms. Allocated memory was 300.4 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 219.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2019-10-07 14:00:31,376 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1058.72 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 98.4 MB in the beginning and 141.6 MB in the end (delta: -43.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 193.55 ms. Allocated memory is still 202.4 MB. Free memory was 141.6 MB in the beginning and 132.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4763.04 ms. Allocated memory was 202.4 MB in the beginning and 300.4 MB in the end (delta: 98.0 MB). Free memory was 132.4 MB in the beginning and 222.6 MB in the end (delta: -90.2 MB). Peak memory consumption was 157.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 373879.49 ms. Allocated memory was 300.4 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 219.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...