java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:25:32,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:25:32,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:25:32,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:25:32,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:25:32,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:25:32,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:25:32,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:25:32,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:25:32,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:25:32,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:25:32,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:25:32,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:25:32,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:25:32,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:25:32,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:25:32,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:25:32,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:25:32,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:25:32,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:25:32,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:25:32,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:25:32,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:25:32,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:25:32,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:25:32,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:25:32,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:25:32,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:25:32,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:25:32,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:25:32,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:25:32,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:25:32,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:25:32,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:25:32,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:25:32,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:25:32,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:25:32,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:25:32,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:25:32,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:25:32,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:25:32,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 14:25:32,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:25:32,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:25:32,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:25:32,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:25:32,615 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:25:32,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:25:32,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:25:32,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:25:32,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:25:32,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:25:32,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:25:32,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:25:32,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:25:32,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:25:32,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:25:32,618 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:25:32,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:25:32,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:25:32,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:25:32,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:25:32,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:25:32,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:25:32,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:25:32,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:25:32,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:25:32,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:25:32,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:25:32,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:25:32,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 14:25:32,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:25:32,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:25:32,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:25:32,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:25:32,929 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:25:32,929 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-07 14:25:32,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee04422f/3ac440f8a33a4f698a4b077629bbee4d/FLAG081187ff4 [2019-10-07 14:25:33,669 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:25:33,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-07 14:25:33,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee04422f/3ac440f8a33a4f698a4b077629bbee4d/FLAG081187ff4 [2019-10-07 14:25:33,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee04422f/3ac440f8a33a4f698a4b077629bbee4d [2019-10-07 14:25:33,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:25:33,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:25:33,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:25:33,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:25:33,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:25:33,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:25:33" (1/1) ... [2019-10-07 14:25:33,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f12b1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:33, skipping insertion in model container [2019-10-07 14:25:33,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:25:33" (1/1) ... [2019-10-07 14:25:33,890 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:25:33,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:25:34,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:25:34,777 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:25:34,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:25:34,998 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:25:34,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34 WrapperNode [2019-10-07 14:25:34,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:25:35,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:25:35,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:25:35,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:25:35,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... [2019-10-07 14:25:35,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:25:35,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:25:35,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:25:35,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:25:35,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:25:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:25:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:25:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:25:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:25:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:25:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:25:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:25:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:25:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:25:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:25:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:25:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:25:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:25:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:25:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:25:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:25:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:25:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:25:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:25:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:25:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:25:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:25:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:25:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:25:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:25:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:25:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:25:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:25:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:25:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:25:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:25:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:25:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:25:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:25:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:25:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:25:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:25:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:25:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:25:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:25:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:25:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:25:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:25:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:25:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:25:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:25:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:25:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:25:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:25:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:25:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:25:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:25:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:25:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:25:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:25:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:25:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:25:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:25:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:25:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:25:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:25:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:25:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:25:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:25:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:25:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:25:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:25:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:25:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:25:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:25:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:25:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:25:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:25:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:25:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:25:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:25:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:25:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:25:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:25:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:25:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:25:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:25:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:25:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:25:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:25:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:25:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:25:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:25:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:25:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:25:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:25:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:25:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:25:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:25:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:25:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:25:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:25:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:25:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:25:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:25:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:25:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:25:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:25:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:25:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:25:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:25:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:25:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:25:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:25:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:25:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:25:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:25:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:25:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:25:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:25:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:25:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:25:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:25:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:25:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:25:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:25:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:25:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:25:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:25:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:25:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:25:40,323 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:25:40,324 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:25:40,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:25:40 BoogieIcfgContainer [2019-10-07 14:25:40,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:25:40,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:25:40,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:25:40,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:25:40,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:25:33" (1/3) ... [2019-10-07 14:25:40,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef72d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:25:40, skipping insertion in model container [2019-10-07 14:25:40,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:34" (2/3) ... [2019-10-07 14:25:40,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef72d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:25:40, skipping insertion in model container [2019-10-07 14:25:40,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:25:40" (3/3) ... [2019-10-07 14:25:40,337 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2019-10-07 14:25:40,348 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:25:40,359 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:25:40,371 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:25:40,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:25:40,417 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:25:40,417 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:25:40,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:25:40,418 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:25:40,418 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:25:40,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:25:40,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:25:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states. [2019-10-07 14:25:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:25:40,481 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:40,482 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:40,484 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 581244493, now seen corresponding path program 1 times [2019-10-07 14:25:40,499 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:40,499 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:40,500 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,500 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:41,418 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:41,418 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:42,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:42,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:42,209 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:25:42,371 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:42,372 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:25:42,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:42,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:25:42,397 INFO L87 Difference]: Start difference. First operand 593 states. Second operand 3 states. [2019-10-07 14:25:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:42,638 INFO L93 Difference]: Finished difference Result 1301 states and 1989 transitions. [2019-10-07 14:25:42,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:42,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-07 14:25:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:42,684 INFO L225 Difference]: With dead ends: 1301 [2019-10-07 14:25:42,684 INFO L226 Difference]: Without dead ends: 840 [2019-10-07 14:25:42,699 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:25:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-07 14:25:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 827. [2019-10-07 14:25:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-10-07 14:25:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1248 transitions. [2019-10-07 14:25:42,939 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1248 transitions. Word has length 118 [2019-10-07 14:25:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:42,940 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1248 transitions. [2019-10-07 14:25:42,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1248 transitions. [2019-10-07 14:25:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:25:42,955 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:42,955 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:25:43,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:43,165 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1987402003, now seen corresponding path program 1 times [2019-10-07 14:25:43,166 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:43,166 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:43,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:43,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:25:43,669 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:43,669 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:43,670 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:25:43,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:25:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:25:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:25:43,675 INFO L87 Difference]: Start difference. First operand 827 states and 1248 transitions. Second operand 7 states. [2019-10-07 14:25:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:46,605 INFO L93 Difference]: Finished difference Result 3152 states and 4892 transitions. [2019-10-07 14:25:46,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:25:46,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-07 14:25:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:46,627 INFO L225 Difference]: With dead ends: 3152 [2019-10-07 14:25:46,627 INFO L226 Difference]: Without dead ends: 2356 [2019-10-07 14:25:46,634 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-10-07 14:25:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2281. [2019-10-07 14:25:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2019-10-07 14:25:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3530 transitions. [2019-10-07 14:25:46,792 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3530 transitions. Word has length 119 [2019-10-07 14:25:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:46,796 INFO L462 AbstractCegarLoop]: Abstraction has 2281 states and 3530 transitions. [2019-10-07 14:25:46,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:25:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3530 transitions. [2019-10-07 14:25:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:25:46,812 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:46,813 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:25:46,813 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1666958552, now seen corresponding path program 1 times [2019-10-07 14:25:46,814 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:46,814 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:46,815 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:46,815 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:47,170 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:47,171 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:47,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:47,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:25:47,902 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:25:48,050 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:48,050 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-07 14:25:48,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:25:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:25:48,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:48,053 INFO L87 Difference]: Start difference. First operand 2281 states and 3530 transitions. Second operand 4 states. [2019-10-07 14:25:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:48,215 INFO L93 Difference]: Finished difference Result 4373 states and 6837 transitions. [2019-10-07 14:25:48,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:25:48,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-07 14:25:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:48,232 INFO L225 Difference]: With dead ends: 4373 [2019-10-07 14:25:48,233 INFO L226 Difference]: Without dead ends: 2123 [2019-10-07 14:25:48,248 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2019-10-07 14:25:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2073. [2019-10-07 14:25:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-07 14:25:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3175 transitions. [2019-10-07 14:25:48,358 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3175 transitions. Word has length 121 [2019-10-07 14:25:48,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:48,359 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3175 transitions. [2019-10-07 14:25:48,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:25:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3175 transitions. [2019-10-07 14:25:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:25:48,363 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:48,363 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:25:48,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:48,571 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1359031422, now seen corresponding path program 1 times [2019-10-07 14:25:48,572 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:48,573 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:48,573 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:48,573 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:48,886 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:48,886 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:49,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:49,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:49,460 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:25:49,573 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:49,573 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:25:49,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:49,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:49,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:25:49,574 INFO L87 Difference]: Start difference. First operand 2073 states and 3175 transitions. Second operand 3 states. [2019-10-07 14:25:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:49,744 INFO L93 Difference]: Finished difference Result 5189 states and 8097 transitions. [2019-10-07 14:25:49,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:49,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-07 14:25:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:49,776 INFO L225 Difference]: With dead ends: 5189 [2019-10-07 14:25:49,777 INFO L226 Difference]: Without dead ends: 3147 [2019-10-07 14:25:49,791 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:25:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2019-10-07 14:25:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3062. [2019-10-07 14:25:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2019-10-07 14:25:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4718 transitions. [2019-10-07 14:25:49,973 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4718 transitions. Word has length 119 [2019-10-07 14:25:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:49,975 INFO L462 AbstractCegarLoop]: Abstraction has 3062 states and 4718 transitions. [2019-10-07 14:25:49,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4718 transitions. [2019-10-07 14:25:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:25:49,981 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:49,982 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:25:50,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:50,192 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:50,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:50,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1128355594, now seen corresponding path program 1 times [2019-10-07 14:25:50,193 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:50,194 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:50,194 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:50,194 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:25:50,630 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:50,630 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:51,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:25:51,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:25:51,298 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:51,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:25:51,609 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:51,609 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:25:51,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:25:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:25:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:25:51,612 INFO L87 Difference]: Start difference. First operand 3062 states and 4718 transitions. Second operand 6 states. [2019-10-07 14:25:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:53,378 INFO L93 Difference]: Finished difference Result 8030 states and 12587 transitions. [2019-10-07 14:25:53,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:25:53,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-07 14:25:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:53,420 INFO L225 Difference]: With dead ends: 8030 [2019-10-07 14:25:53,420 INFO L226 Difference]: Without dead ends: 4999 [2019-10-07 14:25:53,443 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:25:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2019-10-07 14:25:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4963. [2019-10-07 14:25:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4963 states. [2019-10-07 14:25:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7520 transitions. [2019-10-07 14:25:53,678 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7520 transitions. Word has length 120 [2019-10-07 14:25:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:53,678 INFO L462 AbstractCegarLoop]: Abstraction has 4963 states and 7520 transitions. [2019-10-07 14:25:53,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:25:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7520 transitions. [2019-10-07 14:25:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:25:53,682 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:53,682 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:25:53,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:53,899 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:53,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1968729867, now seen corresponding path program 1 times [2019-10-07 14:25:53,900 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:53,901 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:53,901 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:53,901 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 14:25:54,148 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:54,148 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:54,148 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:25:54,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:25:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:25:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:54,150 INFO L87 Difference]: Start difference. First operand 4963 states and 7520 transitions. Second operand 10 states. [2019-10-07 14:25:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:57,391 INFO L93 Difference]: Finished difference Result 17484 states and 27189 transitions. [2019-10-07 14:25:57,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:25:57,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-07 14:25:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:57,533 INFO L225 Difference]: With dead ends: 17484 [2019-10-07 14:25:57,533 INFO L226 Difference]: Without dead ends: 12552 [2019-10-07 14:25:57,587 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:25:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2019-10-07 14:25:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12397. [2019-10-07 14:25:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12397 states. [2019-10-07 14:25:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 19082 transitions. [2019-10-07 14:25:58,293 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 19082 transitions. Word has length 125 [2019-10-07 14:25:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:58,293 INFO L462 AbstractCegarLoop]: Abstraction has 12397 states and 19082 transitions. [2019-10-07 14:25:58,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:25:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 19082 transitions. [2019-10-07 14:25:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 14:25:58,298 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:58,299 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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 14:25:58,299 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash -722498573, now seen corresponding path program 1 times [2019-10-07 14:25:58,300 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:58,300 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:58,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:58,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:25:58,611 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:58,611 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:58,611 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:25:58,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:25:58,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:25:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:25:58,612 INFO L87 Difference]: Start difference. First operand 12397 states and 19082 transitions. Second operand 14 states. [2019-10-07 14:26:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:08,882 INFO L93 Difference]: Finished difference Result 34532 states and 53790 transitions. [2019-10-07 14:26:08,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 14:26:08,882 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2019-10-07 14:26:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:09,061 INFO L225 Difference]: With dead ends: 34532 [2019-10-07 14:26:09,062 INFO L226 Difference]: Without dead ends: 24239 [2019-10-07 14:26:09,117 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:26:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24239 states. [2019-10-07 14:26:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24239 to 23617. [2019-10-07 14:26:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23617 states. [2019-10-07 14:26:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23617 states to 23617 states and 36296 transitions. [2019-10-07 14:26:10,375 INFO L78 Accepts]: Start accepts. Automaton has 23617 states and 36296 transitions. Word has length 131 [2019-10-07 14:26:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:10,376 INFO L462 AbstractCegarLoop]: Abstraction has 23617 states and 36296 transitions. [2019-10-07 14:26:10,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:26:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 23617 states and 36296 transitions. [2019-10-07 14:26:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 14:26:10,383 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:10,383 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 14:26:10,383 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 628665180, now seen corresponding path program 1 times [2019-10-07 14:26:10,384 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:10,384 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:10,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:10,385 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 14:26:10,643 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:10,643 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:10,644 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:26:10,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:26:10,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:26:10,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:26:10,646 INFO L87 Difference]: Start difference. First operand 23617 states and 36296 transitions. Second operand 8 states. [2019-10-07 14:26:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:12,113 INFO L93 Difference]: Finished difference Result 34149 states and 52609 transitions. [2019-10-07 14:26:12,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:26:12,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 158 [2019-10-07 14:26:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:12,286 INFO L225 Difference]: With dead ends: 34149 [2019-10-07 14:26:12,286 INFO L226 Difference]: Without dead ends: 23747 [2019-10-07 14:26:12,339 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:26:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23747 states. [2019-10-07 14:26:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23747 to 23687. [2019-10-07 14:26:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23687 states. [2019-10-07 14:26:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23687 states to 23687 states and 36380 transitions. [2019-10-07 14:26:14,659 INFO L78 Accepts]: Start accepts. Automaton has 23687 states and 36380 transitions. Word has length 158 [2019-10-07 14:26:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:14,660 INFO L462 AbstractCegarLoop]: Abstraction has 23687 states and 36380 transitions. [2019-10-07 14:26:14,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:26:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 23687 states and 36380 transitions. [2019-10-07 14:26:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-07 14:26:14,667 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:14,667 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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 14:26:14,667 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:14,668 INFO L82 PathProgramCache]: Analyzing trace with hash -2058280088, now seen corresponding path program 1 times [2019-10-07 14:26:14,668 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:14,668 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:14,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:14,669 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 14:26:14,957 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:14,957 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:14,957 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:26:14,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:26:14,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:26:14,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:26:14,959 INFO L87 Difference]: Start difference. First operand 23687 states and 36380 transitions. Second operand 14 states. [2019-10-07 14:26:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:28,898 INFO L93 Difference]: Finished difference Result 48621 states and 77379 transitions. [2019-10-07 14:26:28,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:26:28,899 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 162 [2019-10-07 14:26:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:29,265 INFO L225 Difference]: With dead ends: 48621 [2019-10-07 14:26:29,266 INFO L226 Difference]: Without dead ends: 48590 [2019-10-07 14:26:29,305 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:26:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48590 states. [2019-10-07 14:26:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48590 to 47059. [2019-10-07 14:26:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47059 states. [2019-10-07 14:26:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47059 states to 47059 states and 73259 transitions. [2019-10-07 14:26:31,663 INFO L78 Accepts]: Start accepts. Automaton has 47059 states and 73259 transitions. Word has length 162 [2019-10-07 14:26:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:31,664 INFO L462 AbstractCegarLoop]: Abstraction has 47059 states and 73259 transitions. [2019-10-07 14:26:31,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:26:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand 47059 states and 73259 transitions. [2019-10-07 14:26:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-07 14:26:31,675 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:31,676 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:31,676 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:31,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:31,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1580719935, now seen corresponding path program 1 times [2019-10-07 14:26:31,677 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:31,677 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:31,677 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:31,677 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-07 14:26:31,973 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:31,973 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:34,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 3433 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:26:34,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:26:34,651 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:34,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-07 14:26:35,176 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:35,176 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:26:35,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:26:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:26:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:26:35,177 INFO L87 Difference]: Start difference. First operand 47059 states and 73259 transitions. Second operand 9 states. [2019-10-07 14:26:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:45,326 INFO L93 Difference]: Finished difference Result 117330 states and 185469 transitions. [2019-10-07 14:26:45,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:26:45,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2019-10-07 14:26:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:45,738 INFO L225 Difference]: With dead ends: 117330 [2019-10-07 14:26:45,738 INFO L226 Difference]: Without dead ends: 70302 [2019-10-07 14:26:45,909 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 374 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:26:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70302 states. [2019-10-07 14:26:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70302 to 69042. [2019-10-07 14:26:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69042 states. [2019-10-07 14:26:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69042 states to 69042 states and 108135 transitions. [2019-10-07 14:26:48,626 INFO L78 Accepts]: Start accepts. Automaton has 69042 states and 108135 transitions. Word has length 192 [2019-10-07 14:26:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:48,626 INFO L462 AbstractCegarLoop]: Abstraction has 69042 states and 108135 transitions. [2019-10-07 14:26:48,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:26:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 69042 states and 108135 transitions. [2019-10-07 14:26:48,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-07 14:26:48,640 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:48,640 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:48,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:48,850 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash -563697177, now seen corresponding path program 1 times [2019-10-07 14:26:48,851 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:48,851 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:48,851 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:48,851 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-07 14:26:49,068 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:49,068 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:49,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 3476 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:26:49,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:26:49,894 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-07 14:26:50,194 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:50,194 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:26:50,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:26:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:26:50,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:26:50,199 INFO L87 Difference]: Start difference. First operand 69042 states and 108135 transitions. Second operand 3 states. [2019-10-07 14:26:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:54,916 INFO L93 Difference]: Finished difference Result 143730 states and 227352 transitions. [2019-10-07 14:26:54,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:26:54,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-07 14:26:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:55,368 INFO L225 Difference]: With dead ends: 143730 [2019-10-07 14:26:55,368 INFO L226 Difference]: Without dead ends: 74719 [2019-10-07 14:26:55,946 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 407 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:26:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74719 states. [2019-10-07 14:26:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74719 to 73978. [2019-10-07 14:26:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73978 states. [2019-10-07 14:27:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73978 states to 73978 states and 115681 transitions. [2019-10-07 14:27:01,549 INFO L78 Accepts]: Start accepts. Automaton has 73978 states and 115681 transitions. Word has length 205 [2019-10-07 14:27:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:01,549 INFO L462 AbstractCegarLoop]: Abstraction has 73978 states and 115681 transitions. [2019-10-07 14:27:01,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:27:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 73978 states and 115681 transitions. [2019-10-07 14:27:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:27:01,567 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:01,567 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:01,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:01,776 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash -2117701868, now seen corresponding path program 1 times [2019-10-07 14:27:01,777 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:01,777 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:01,777 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:01,778 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-07 14:27:01,987 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:01,987 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:02,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:27:02,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 14:27:03,003 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-07 14:27:03,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:27:03,651 INFO L162 IcfgInterpreter]: Started Sifa with 129 locations of interest [2019-10-07 14:27:03,651 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:27:03,659 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:27:03,671 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:27:03,673 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:27:49,512 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 756 [2019-10-07 14:27:54,214 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:27:54,594 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:27:55,382 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:27:55,685 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:27:56,238 WARN L191 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:27:56,743 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:27:57,203 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:27:57,726 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:27:58,713 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 14:27:59,170 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:27:59,690 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:28:00,137 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:28:00,586 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:28:01,167 WARN L191 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:28:01,184 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 379 for LOIs [2019-10-07 14:28:01,490 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:28:01,617 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:28:01,971 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 907 [2019-10-07 14:28:01,973 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1068 for LOIs [2019-10-07 14:28:02,411 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:02,846 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:02,961 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:03,678 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:04,220 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:04,656 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:04,776 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:05,497 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:05,974 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:06,409 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:06,527 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:07,345 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:08,131 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 1230 DAG size of output: 1068 [2019-10-07 14:28:08,563 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:08,813 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:09,803 WARN L191 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:10,249 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:10,775 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:10,885 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:11,610 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:12,061 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:12,497 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:12,605 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:13,332 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:13,855 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:14,301 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:14,413 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:15,133 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:15,566 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:16,009 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:16,118 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:16,927 WARN L191 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:17,368 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:17,799 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:17,911 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:18,630 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:19,061 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:19,496 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:19,613 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:20,408 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:20,839 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:21,272 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:21,380 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:22,099 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:22,545 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:23,066 WARN L191 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:23,176 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:23,898 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:24,331 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:24,770 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:24,879 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:25,611 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:26,451 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:27,173 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:27,295 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:28,022 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:29,429 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:28:30,160 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:30,287 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:31,010 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:31,729 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:32,537 WARN L191 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:32,646 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:33,352 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:34,100 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:34,830 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:34,947 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:35,752 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:36,983 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:28:37,708 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:28:37,829 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:38,633 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:39,842 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:28:40,565 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:28:40,674 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:41,397 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:42,196 WARN L191 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:28:42,923 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:28:43,037 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:43,762 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:44,494 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:45,220 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:45,344 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:46,068 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:28:46,826 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:47,545 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:47,658 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:48,391 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:28:49,629 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:28:50,348 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:50,480 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:51,212 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:28:51,931 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:52,666 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:28:52,775 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:28:53,505 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:28:54,982 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:28:55,697 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:55,848 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:56,558 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:57,871 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:28:58,598 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:58,715 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:28:59,424 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:00,149 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:00,884 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:00,992 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:01,710 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:03,037 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:03,766 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:03,887 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:04,605 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:06,669 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:07,412 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:07,532 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:08,252 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:09,547 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:10,276 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:10,387 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:11,099 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:12,362 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:29:13,072 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:29:13,197 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:13,913 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:15,125 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:29:15,841 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:15,957 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:16,688 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:29:19,002 WARN L191 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:19,737 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:19,856 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:20,577 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:21,884 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:22,608 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:22,723 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:23,454 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:24,179 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:24,889 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:24,995 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:25,702 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:27,005 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:27,726 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:27,840 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:28,548 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:29,849 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:30,564 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:30,681 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:31,395 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:32,103 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:32,853 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:32,965 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:33,677 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:35,017 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:35,742 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:35,859 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:36,586 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:37,892 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:38,619 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:38,735 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:39,478 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:40,781 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:41,514 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:41,634 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:42,360 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:43,637 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:44,357 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:44,472 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:45,180 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:46,497 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:47,213 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:47,326 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:48,044 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:49,367 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:50,093 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:50,209 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:50,942 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:51,664 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:52,387 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:52,495 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:53,236 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:54,585 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:29:55,327 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:55,461 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:56,201 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:29:57,450 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:29:58,188 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:29:58,331 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:29:59,051 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:00,287 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:01,008 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:01,118 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:01,865 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:03,371 WARN L191 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:04,098 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:04,215 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:04,946 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:06,187 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:30:06,916 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:07,035 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:07,760 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:09,109 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:09,833 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:09,950 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:10,666 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:11,989 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:12,717 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:12,832 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:13,557 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:14,287 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:15,013 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:15,121 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:15,835 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:17,062 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:17,798 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:17,916 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:18,645 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:19,867 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:20,722 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:20,838 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:21,571 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:22,287 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:23,015 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:23,124 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:23,847 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:25,097 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:25,833 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:25,947 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:26,673 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:27,903 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:30:28,641 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:28,756 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:29,483 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:30,743 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:30:31,463 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:31,591 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:32,318 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:33,557 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:30:34,264 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:34,382 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:35,109 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:36,423 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:37,134 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:37,246 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:37,952 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:39,242 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:39,960 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:40,072 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:40,791 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:41,525 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:42,270 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:42,378 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:43,099 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:44,384 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:45,137 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:45,259 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:45,978 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:47,203 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:47,936 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:48,050 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:48,756 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:49,469 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:50,190 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:50,300 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:51,041 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:52,257 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:52,991 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:53,107 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:53,843 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:53,850 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1092 for LOIs [2019-10-07 14:30:54,330 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:30:54,813 WARN L191 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:30:54,940 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:55,645 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:55,660 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1042 for LOIs [2019-10-07 14:30:56,063 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:30:56,441 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:30:56,560 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:57,277 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:57,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:57,538 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:30:57,544 INFO L168 Benchmark]: Toolchain (without parser) took 323669.85 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 100.6 MB in the beginning and 965.5 MB in the end (delta: -864.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,544 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.38 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 141.1 MB in the end (delta: -40.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,545 INFO L168 Benchmark]: Boogie Preprocessor took 201.43 ms. Allocated memory is still 202.9 MB. Free memory was 141.1 MB in the beginning and 131.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,545 INFO L168 Benchmark]: RCFGBuilder took 5124.08 ms. Allocated memory was 202.9 MB in the beginning and 300.4 MB in the end (delta: 97.5 MB). Free memory was 131.8 MB in the beginning and 219.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 155.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,546 INFO L168 Benchmark]: TraceAbstraction took 317215.22 ms. Allocated memory was 300.4 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 219.4 MB in the beginning and 965.5 MB in the end (delta: -746.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:57,547 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1124.38 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 141.1 MB in the end (delta: -40.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.43 ms. Allocated memory is still 202.9 MB. Free memory was 141.1 MB in the beginning and 131.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5124.08 ms. Allocated memory was 202.9 MB in the beginning and 300.4 MB in the end (delta: 97.5 MB). Free memory was 131.8 MB in the beginning and 219.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 155.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 317215.22 ms. Allocated memory was 300.4 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 219.4 MB in the beginning and 965.5 MB in the end (delta: -746.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...