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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:24:44,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:24:44,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:24:44,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:24:44,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:24:44,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:24:44,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:24:44,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:24:44,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:24:44,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:24:44,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:24:44,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:24:44,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:24:44,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:24:44,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:24:44,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:24:44,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:24:44,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:24:44,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:24:44,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:24:44,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:24:44,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:24:44,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:24:44,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:24:44,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:24:44,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:24:44,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:24:44,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:24:44,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:24:44,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:24:44,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:24:44,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:24:44,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:24:44,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:24:44,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:24:44,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:24:44,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:24:44,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:24:44,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:24:44,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:24:44,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:24:44,955 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 14:24:44,982 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:24:44,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:24:44,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:24:44,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:24:44,986 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:24:44,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:24:44,986 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:24:44,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:24:44,988 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:24:44,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:24:44,989 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:24:44,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:24:44,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:24:44,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:24:44,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:24:44,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:24:44,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:24:44,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:24:44,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:24:44,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:24:44,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:24:44,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:24:44,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:24:44,992 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 14:24:45,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:24:45,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:24:45,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:24:45,304 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:24:45,305 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:24:45,305 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product17.cil.c [2019-10-07 14:24:45,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af08e604/b870fb929ec64c3eb20f5e527e118ed2/FLAG4f5e2e70c [2019-10-07 14:24:46,042 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:24:46,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product17.cil.c [2019-10-07 14:24:46,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af08e604/b870fb929ec64c3eb20f5e527e118ed2/FLAG4f5e2e70c [2019-10-07 14:24:46,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af08e604/b870fb929ec64c3eb20f5e527e118ed2 [2019-10-07 14:24:46,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:24:46,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:24:46,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:46,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:24:46,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:24:46,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:46" (1/1) ... [2019-10-07 14:24:46,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364b9967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:46, skipping insertion in model container [2019-10-07 14:24:46,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:46" (1/1) ... [2019-10-07 14:24:46,223 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:24:46,316 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:24:47,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:47,090 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:24:47,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:47,325 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:24:47,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47 WrapperNode [2019-10-07 14:24:47,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:47,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:24:47,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:24:47,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:24:47,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (1/1) ... [2019-10-07 14:24:47,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:24:47,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:24:47,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:24:47,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:24:47,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (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 14:24:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:24:47,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:24:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:24:47,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:24:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:24:47,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:24:47,611 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:24:47,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:24:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:24:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:24:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:24:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:24:47,613 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:24:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:24:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:47,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:47,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:24:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:24:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:24:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:24:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:24:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:24:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:24:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:24:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:24:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:24:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:24:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:24:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:24:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:24:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:24:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:24:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:24:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:24:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:24:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:24:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:24:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:24:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:24:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:24:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:24:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:24:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:24:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:24:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:24:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:24:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:24:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:24:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:24:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:24:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:24:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:24:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:24:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:24:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:24:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:24:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:24:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:24:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:24:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:24:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:24:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:24:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:24:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:24:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:24:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:24:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:24:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:24:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:24:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:24:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:24:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:24:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:24:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:24:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:24:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:24:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:24:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:24:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:24:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:24:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:24:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:24:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:24:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:24:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:24:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:24:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:24:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:24:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:24:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:24:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:24:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:24:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:24:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:24:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:24:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:24:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:24:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:24:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:24:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:24:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:24:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:24:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:24:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:24:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:24:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:24:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:24:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:24:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:24:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:24:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:24:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:24:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:24:52,823 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:24:52,824 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:24:52,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:52 BoogieIcfgContainer [2019-10-07 14:24:52,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:24:52,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:24:52,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:24:52,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:24:52,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:24:46" (1/3) ... [2019-10-07 14:24:52,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1169ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:52, skipping insertion in model container [2019-10-07 14:24:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:47" (2/3) ... [2019-10-07 14:24:52,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1169ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:52, skipping insertion in model container [2019-10-07 14:24:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:52" (3/3) ... [2019-10-07 14:24:52,835 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2019-10-07 14:24:52,845 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:24:52,855 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:24:52,866 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:24:52,899 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:24:52,899 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:24:52,899 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:24:52,899 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:24:52,900 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:24:52,900 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:24:52,900 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:24:52,900 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:24:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states. [2019-10-07 14:24:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-07 14:24:52,952 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:52,954 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:52,956 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash -656663885, now seen corresponding path program 1 times [2019-10-07 14:24:52,971 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:52,972 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:52,972 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:52,972 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:24:53,805 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:53,806 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:53,806 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 14:24:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:54,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:54,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:24:54,712 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:54,860 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:54,860 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:24:54,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:24:54,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:24:54,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:54,884 INFO L87 Difference]: Start difference. First operand 566 states. Second operand 3 states. [2019-10-07 14:24:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:55,098 INFO L93 Difference]: Finished difference Result 1218 states and 1883 transitions. [2019-10-07 14:24:55,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:24:55,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-10-07 14:24:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:55,149 INFO L225 Difference]: With dead ends: 1218 [2019-10-07 14:24:55,150 INFO L226 Difference]: Without dead ends: 784 [2019-10-07 14:24:55,164 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-10-07 14:24:55,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 771. [2019-10-07 14:24:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-10-07 14:24:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1177 transitions. [2019-10-07 14:24:55,333 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1177 transitions. Word has length 98 [2019-10-07 14:24:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:55,335 INFO L462 AbstractCegarLoop]: Abstraction has 771 states and 1177 transitions. [2019-10-07 14:24:55,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:24:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1177 transitions. [2019-10-07 14:24:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-07 14:24:55,346 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:55,346 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:55,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:55,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash -768869353, now seen corresponding path program 1 times [2019-10-07 14:24:55,558 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:55,558 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:55,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:55,559 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:55,915 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:55,915 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:55,916 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:24:55,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:24:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:24:55,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:24:55,920 INFO L87 Difference]: Start difference. First operand 771 states and 1177 transitions. Second operand 8 states. [2019-10-07 14:24:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:56,047 INFO L93 Difference]: Finished difference Result 1525 states and 2357 transitions. [2019-10-07 14:24:56,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:24:56,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-10-07 14:24:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:56,058 INFO L225 Difference]: With dead ends: 1525 [2019-10-07 14:24:56,059 INFO L226 Difference]: Without dead ends: 785 [2019-10-07 14:24:56,065 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:24:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-10-07 14:24:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 779. [2019-10-07 14:24:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-10-07 14:24:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1185 transitions. [2019-10-07 14:24:56,151 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1185 transitions. Word has length 99 [2019-10-07 14:24:56,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:56,152 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 1185 transitions. [2019-10-07 14:24:56,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:24:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1185 transitions. [2019-10-07 14:24:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:24:56,158 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:56,158 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:56,159 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:56,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2139774390, now seen corresponding path program 1 times [2019-10-07 14:24:56,160 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:56,160 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:56,160 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:56,160 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:56,360 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:56,361 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:56,361 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 14:24:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:57,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 14:24:57,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:57,302 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:57,459 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:57,460 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-07 14:24:57,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:24:57,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:24:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:57,462 INFO L87 Difference]: Start difference. First operand 779 states and 1185 transitions. Second operand 5 states. [2019-10-07 14:24:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:59,629 INFO L93 Difference]: Finished difference Result 2934 states and 4527 transitions. [2019-10-07 14:24:59,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:24:59,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-10-07 14:24:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:59,654 INFO L225 Difference]: With dead ends: 2934 [2019-10-07 14:24:59,654 INFO L226 Difference]: Without dead ends: 2186 [2019-10-07 14:24:59,661 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2019-10-07 14:24:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2136. [2019-10-07 14:24:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2019-10-07 14:24:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3208 transitions. [2019-10-07 14:24:59,815 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3208 transitions. Word has length 103 [2019-10-07 14:24:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:59,816 INFO L462 AbstractCegarLoop]: Abstraction has 2136 states and 3208 transitions. [2019-10-07 14:24:59,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:24:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3208 transitions. [2019-10-07 14:24:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:24:59,821 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:59,821 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:00,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:00,032 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2040806792, now seen corresponding path program 1 times [2019-10-07 14:25:00,033 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:00,033 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:00,033 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:00,033 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:25:00,275 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:00,275 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:00,275 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 14:25:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:00,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:25:00,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:25:01,074 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:01,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:25:01,303 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:01,303 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-07 14:25:01,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:25:01,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:25:01,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:01,305 INFO L87 Difference]: Start difference. First operand 2136 states and 3208 transitions. Second operand 7 states. [2019-10-07 14:25:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:02,845 INFO L93 Difference]: Finished difference Result 3955 states and 5977 transitions. [2019-10-07 14:25:02,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:25:02,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-07 14:25:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:02,869 INFO L225 Difference]: With dead ends: 3955 [2019-10-07 14:25:02,869 INFO L226 Difference]: Without dead ends: 2378 [2019-10-07 14:25:02,881 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2019-10-07 14:25:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2280. [2019-10-07 14:25:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-10-07 14:25:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3408 transitions. [2019-10-07 14:25:03,045 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3408 transitions. Word has length 107 [2019-10-07 14:25:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:03,045 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3408 transitions. [2019-10-07 14:25:03,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:25:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3408 transitions. [2019-10-07 14:25:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:25:03,049 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:03,050 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:03,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:03,258 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1849756224, now seen corresponding path program 1 times [2019-10-07 14:25:03,258 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:03,258 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:03,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:03,259 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:25:03,520 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:03,521 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:25:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:04,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:25:04,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:25:04,250 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:25:04,397 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:04,397 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-07 14:25:04,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:25:04,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:25:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:04,400 INFO L87 Difference]: Start difference. First operand 2280 states and 3408 transitions. Second operand 5 states. [2019-10-07 14:25:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:04,678 INFO L93 Difference]: Finished difference Result 4297 states and 6532 transitions. [2019-10-07 14:25:04,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:25:04,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-07 14:25:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:04,701 INFO L225 Difference]: With dead ends: 4297 [2019-10-07 14:25:04,701 INFO L226 Difference]: Without dead ends: 2280 [2019-10-07 14:25:04,715 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:25:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2019-10-07 14:25:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2280. [2019-10-07 14:25:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-10-07 14:25:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3366 transitions. [2019-10-07 14:25:04,857 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3366 transitions. Word has length 108 [2019-10-07 14:25:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:04,858 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3366 transitions. [2019-10-07 14:25:04,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:25:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3366 transitions. [2019-10-07 14:25:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:25:04,865 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:04,865 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:05,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:05,075 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:05,076 INFO L82 PathProgramCache]: Analyzing trace with hash -465779275, now seen corresponding path program 1 times [2019-10-07 14:25:05,076 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:05,077 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:05,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:05,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:25:05,368 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:05,368 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:05,368 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 14:25:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:06,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:25:06,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:06,195 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-10-07 14:25:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:25:06,231 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:06,701 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:07,198 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:07,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:07,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:07,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:07,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:07,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:25:07,329 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:07,329 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2019-10-07 14:25:07,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:25:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:25:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:07,330 INFO L87 Difference]: Start difference. First operand 2280 states and 3366 transitions. Second operand 6 states. [2019-10-07 14:25:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:09,132 INFO L93 Difference]: Finished difference Result 6665 states and 10057 transitions. [2019-10-07 14:25:09,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:25:09,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-07 14:25:09,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:09,176 INFO L225 Difference]: With dead ends: 6665 [2019-10-07 14:25:09,177 INFO L226 Difference]: Without dead ends: 4416 [2019-10-07 14:25:09,197 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2019-10-07 14:25:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 4260. [2019-10-07 14:25:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2019-10-07 14:25:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6375 transitions. [2019-10-07 14:25:09,443 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6375 transitions. Word has length 110 [2019-10-07 14:25:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:09,443 INFO L462 AbstractCegarLoop]: Abstraction has 4260 states and 6375 transitions. [2019-10-07 14:25:09,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:25:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6375 transitions. [2019-10-07 14:25:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:25:09,447 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:09,447 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:09,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:09,664 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:09,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1388389254, now seen corresponding path program 1 times [2019-10-07 14:25:09,664 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:09,665 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:09,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:09,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:25:09,884 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:09,884 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:09,884 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 14:25:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:10,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:10,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:25:10,855 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:25:10,959 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:10,959 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:25:10,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:10,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:10,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:10,960 INFO L87 Difference]: Start difference. First operand 4260 states and 6375 transitions. Second operand 3 states. [2019-10-07 14:25:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:11,286 INFO L93 Difference]: Finished difference Result 10524 states and 16049 transitions. [2019-10-07 14:25:11,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:11,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-07 14:25:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:11,363 INFO L225 Difference]: With dead ends: 10524 [2019-10-07 14:25:11,364 INFO L226 Difference]: Without dead ends: 6295 [2019-10-07 14:25:11,398 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2019-10-07 14:25:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 6129. [2019-10-07 14:25:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2019-10-07 14:25:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 9177 transitions. [2019-10-07 14:25:11,827 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 9177 transitions. Word has length 110 [2019-10-07 14:25:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:11,828 INFO L462 AbstractCegarLoop]: Abstraction has 6129 states and 9177 transitions. [2019-10-07 14:25:11,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 9177 transitions. [2019-10-07 14:25:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:25:11,832 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:11,832 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:12,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:12,050 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2040787126, now seen corresponding path program 1 times [2019-10-07 14:25:12,051 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:12,051 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:12,052 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:12,052 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:25:12,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:12,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:25:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:13,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:25:13,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:25:13,291 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:13,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:25:13,621 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:13,621 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-07 14:25:13,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:25:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:25:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:25:13,623 INFO L87 Difference]: Start difference. First operand 6129 states and 9177 transitions. Second operand 11 states. [2019-10-07 14:25:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:18,671 INFO L93 Difference]: Finished difference Result 13848 states and 21004 transitions. [2019-10-07 14:25:18,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:25:18,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2019-10-07 14:25:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:18,733 INFO L225 Difference]: With dead ends: 13848 [2019-10-07 14:25:18,733 INFO L226 Difference]: Without dead ends: 7750 [2019-10-07 14:25:18,776 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:25:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2019-10-07 14:25:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7697. [2019-10-07 14:25:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7697 states. [2019-10-07 14:25:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11435 transitions. [2019-10-07 14:25:19,155 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11435 transitions. Word has length 111 [2019-10-07 14:25:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:19,156 INFO L462 AbstractCegarLoop]: Abstraction has 7697 states and 11435 transitions. [2019-10-07 14:25:19,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:25:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11435 transitions. [2019-10-07 14:25:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 14:25:19,159 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:19,160 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:19,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:19,369 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash 574115175, now seen corresponding path program 1 times [2019-10-07 14:25:19,369 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:19,370 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:19,370 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:19,370 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:25:19,577 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:19,577 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:20,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:25:20,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:20,563 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-10-07 14:25:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:25:20,611 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:21,057 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:21,548 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:21,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:21,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:21,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:21,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:21,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:25:21,664 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:21,664 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 7] total 16 [2019-10-07 14:25:21,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:25:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:25:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:25:21,665 INFO L87 Difference]: Start difference. First operand 7697 states and 11435 transitions. Second operand 6 states. [2019-10-07 14:25:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:23,584 INFO L93 Difference]: Finished difference Result 22360 states and 34019 transitions. [2019-10-07 14:25:23,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:25:23,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-10-07 14:25:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:23,706 INFO L225 Difference]: With dead ends: 22360 [2019-10-07 14:25:23,707 INFO L226 Difference]: Without dead ends: 14694 [2019-10-07 14:25:23,738 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:25:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14694 states. [2019-10-07 14:25:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14694 to 14477. [2019-10-07 14:25:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14477 states. [2019-10-07 14:25:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14477 states to 14477 states and 21813 transitions. [2019-10-07 14:25:24,446 INFO L78 Accepts]: Start accepts. Automaton has 14477 states and 21813 transitions. Word has length 116 [2019-10-07 14:25:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:24,447 INFO L462 AbstractCegarLoop]: Abstraction has 14477 states and 21813 transitions. [2019-10-07 14:25:24,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:25:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 14477 states and 21813 transitions. [2019-10-07 14:25:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 14:25:24,451 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:24,451 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:24,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:24,660 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash 69026787, now seen corresponding path program 1 times [2019-10-07 14:25:24,661 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:24,661 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:24,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:24,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:24,959 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 14:25:24,960 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:24,960 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:24,960 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-07 14:25:24,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 14:25:24,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 14:25:24,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:25:24,962 INFO L87 Difference]: Start difference. First operand 14477 states and 21813 transitions. Second operand 15 states. [2019-10-07 14:25:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:41,309 INFO L93 Difference]: Finished difference Result 56481 states and 89245 transitions. [2019-10-07 14:25:41,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-10-07 14:25:41,310 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 122 [2019-10-07 14:25:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:41,641 INFO L225 Difference]: With dead ends: 56481 [2019-10-07 14:25:41,641 INFO L226 Difference]: Without dead ends: 43930 [2019-10-07 14:25:41,725 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=299, Invalid=1681, Unknown=0, NotChecked=0, Total=1980 [2019-10-07 14:25:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43930 states. [2019-10-07 14:25:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43930 to 41167. [2019-10-07 14:25:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41167 states. [2019-10-07 14:25:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41167 states to 41167 states and 63474 transitions. [2019-10-07 14:25:45,368 INFO L78 Accepts]: Start accepts. Automaton has 41167 states and 63474 transitions. Word has length 122 [2019-10-07 14:25:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:45,368 INFO L462 AbstractCegarLoop]: Abstraction has 41167 states and 63474 transitions. [2019-10-07 14:25:45,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 14:25:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 41167 states and 63474 transitions. [2019-10-07 14:25:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-07 14:25:45,374 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:45,374 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:45,375 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:45,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:45,375 INFO L82 PathProgramCache]: Analyzing trace with hash -489743733, now seen corresponding path program 1 times [2019-10-07 14:25:45,375 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:45,376 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:45,376 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:45,376 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:25:45,573 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:45,573 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:46,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:25:46,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:25:46,396 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:25:46,580 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:46,580 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2019-10-07 14:25:46,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:25:46,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:25:46,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:25:46,582 INFO L87 Difference]: Start difference. First operand 41167 states and 63474 transitions. Second operand 5 states. [2019-10-07 14:25:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:48,282 INFO L93 Difference]: Finished difference Result 81972 states and 131363 transitions. [2019-10-07 14:25:48,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:25:48,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-07 14:25:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:48,577 INFO L225 Difference]: With dead ends: 81972 [2019-10-07 14:25:48,577 INFO L226 Difference]: Without dead ends: 42171 [2019-10-07 14:25:48,763 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:25:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42171 states. [2019-10-07 14:25:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42171 to 41987. [2019-10-07 14:25:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41987 states. [2019-10-07 14:25:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41987 states to 41987 states and 66913 transitions. [2019-10-07 14:25:52,695 INFO L78 Accepts]: Start accepts. Automaton has 41987 states and 66913 transitions. Word has length 146 [2019-10-07 14:25:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:52,695 INFO L462 AbstractCegarLoop]: Abstraction has 41987 states and 66913 transitions. [2019-10-07 14:25:52,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:25:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 41987 states and 66913 transitions. [2019-10-07 14:25:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:25:52,705 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:52,705 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:25:52,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:52,915 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -738505404, now seen corresponding path program 1 times [2019-10-07 14:25:52,916 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:52,916 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:52,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:52,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:25:53,195 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:53,195 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:53,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:25:53,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:25:54,118 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:54,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:25:54,677 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:54,678 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:25:54,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:25:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:25:54,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:25:54,679 INFO L87 Difference]: Start difference. First operand 41987 states and 66913 transitions. Second operand 9 states. [2019-10-07 14:25:55,807 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-10-07 14:26:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:07,429 INFO L93 Difference]: Finished difference Result 109056 states and 182554 transitions. [2019-10-07 14:26:07,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:26:07,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2019-10-07 14:26:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:08,156 INFO L225 Difference]: With dead ends: 109056 [2019-10-07 14:26:08,156 INFO L226 Difference]: Without dead ends: 67100 [2019-10-07 14:26:08,257 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 334 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:26:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67100 states. [2019-10-07 14:26:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67100 to 64011. [2019-10-07 14:26:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64011 states. [2019-10-07 14:26:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64011 states to 64011 states and 103559 transitions. [2019-10-07 14:26:11,206 INFO L78 Accepts]: Start accepts. Automaton has 64011 states and 103559 transitions. Word has length 172 [2019-10-07 14:26:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:11,206 INFO L462 AbstractCegarLoop]: Abstraction has 64011 states and 103559 transitions. [2019-10-07 14:26:11,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:26:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 64011 states and 103559 transitions. [2019-10-07 14:26:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:26:11,215 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:11,215 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:11,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:11,416 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:11,417 INFO L82 PathProgramCache]: Analyzing trace with hash -955895840, now seen corresponding path program 1 times [2019-10-07 14:26:11,417 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:11,417 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:11,417 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:11,417 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:26:11,630 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:11,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:12,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:26:12,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:26:12,503 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:26:12,687 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:12,687 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-10-07 14:26:12,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:26:12,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:26:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:12,688 INFO L87 Difference]: Start difference. First operand 64011 states and 103559 transitions. Second operand 4 states. [2019-10-07 14:26:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:17,110 INFO L93 Difference]: Finished difference Result 131135 states and 219047 transitions. [2019-10-07 14:26:17,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:26:17,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-07 14:26:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:17,526 INFO L225 Difference]: With dead ends: 131135 [2019-10-07 14:26:17,527 INFO L226 Difference]: Without dead ends: 58591 [2019-10-07 14:26:18,123 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:26:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58591 states. [2019-10-07 14:26:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58591 to 58546. [2019-10-07 14:26:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58546 states. [2019-10-07 14:26:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58546 states to 58546 states and 92145 transitions. [2019-10-07 14:26:23,210 INFO L78 Accepts]: Start accepts. Automaton has 58546 states and 92145 transitions. Word has length 177 [2019-10-07 14:26:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:23,210 INFO L462 AbstractCegarLoop]: Abstraction has 58546 states and 92145 transitions. [2019-10-07 14:26:23,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:26:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 58546 states and 92145 transitions. [2019-10-07 14:26:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:26:23,222 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:23,222 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:23,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:23,430 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash 72212032, now seen corresponding path program 1 times [2019-10-07 14:26:23,431 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:23,432 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:23,432 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:23,432 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:26:23,618 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:23,618 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:23,618 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:26:23,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:26:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:26:23,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:26:23,620 INFO L87 Difference]: Start difference. First operand 58546 states and 92145 transitions. Second operand 5 states. [2019-10-07 14:26:25,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:25,619 INFO L93 Difference]: Finished difference Result 98744 states and 160283 transitions. [2019-10-07 14:26:25,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:26:25,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-10-07 14:26:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:25,962 INFO L225 Difference]: With dead ends: 98744 [2019-10-07 14:26:25,962 INFO L226 Difference]: Without dead ends: 59740 [2019-10-07 14:26:26,133 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:26:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59740 states. [2019-10-07 14:26:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59740 to 59088. [2019-10-07 14:26:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59088 states. [2019-10-07 14:26:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59088 states to 59088 states and 92635 transitions. [2019-10-07 14:26:28,647 INFO L78 Accepts]: Start accepts. Automaton has 59088 states and 92635 transitions. Word has length 181 [2019-10-07 14:26:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:28,648 INFO L462 AbstractCegarLoop]: Abstraction has 59088 states and 92635 transitions. [2019-10-07 14:26:28,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:26:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 59088 states and 92635 transitions. [2019-10-07 14:26:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 14:26:28,654 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:28,654 INFO L385 BasicCegarLoop]: trace histogram [6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:28,654 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:28,655 INFO L82 PathProgramCache]: Analyzing trace with hash -610462278, now seen corresponding path program 1 times [2019-10-07 14:26:28,655 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:28,655 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:28,655 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:28,655 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:26:28,816 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:28,817 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:30,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:26:30,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:26:30,190 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:26:30,400 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:30,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:26:30,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:26:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:26:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:26:30,401 INFO L87 Difference]: Start difference. First operand 59088 states and 92635 transitions. Second operand 3 states. [2019-10-07 14:26:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:33,873 INFO L93 Difference]: Finished difference Result 140253 states and 230424 transitions. [2019-10-07 14:26:33,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:26:33,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-07 14:26:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:34,270 INFO L225 Difference]: With dead ends: 140253 [2019-10-07 14:26:34,271 INFO L226 Difference]: Without dead ends: 81196 [2019-10-07 14:26:34,449 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 367 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 14:26:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81196 states. [2019-10-07 14:26:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81196 to 80279. [2019-10-07 14:26:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80279 states. [2019-10-07 14:26:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80279 states to 80279 states and 125731 transitions. [2019-10-07 14:26:41,277 INFO L78 Accepts]: Start accepts. Automaton has 80279 states and 125731 transitions. Word has length 185 [2019-10-07 14:26:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:41,277 INFO L462 AbstractCegarLoop]: Abstraction has 80279 states and 125731 transitions. [2019-10-07 14:26:41,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:26:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 80279 states and 125731 transitions. [2019-10-07 14:26:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-07 14:26:41,288 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:41,288 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:41,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:41,497 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -254973757, now seen corresponding path program 1 times [2019-10-07 14:26:41,498 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:41,498 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:41,498 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:41,498 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 14:26:41,685 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:41,686 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:42,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 3166 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 14:26:42,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:26:42,684 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:43,196 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:26:43,699 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:26:43,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:43,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:43,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:43,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:43,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 14:26:43,810 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:26:43,842 INFO L162 IcfgInterpreter]: Started Sifa with 155 locations of interest [2019-10-07 14:26:43,842 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:26:43,849 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:26:43,856 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:26:43,856 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:27:25,618 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 754 [2019-10-07 14:27:31,226 WARN L191 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:27:31,596 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:27:31,836 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:27:32,040 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 14:27:32,588 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:33,291 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:33,746 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:34,259 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:35,157 WARN L191 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 1022 DAG size of output: 1020 [2019-10-07 14:27:35,599 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:36,310 WARN L191 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:36,746 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:37,192 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:37,688 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 14:27:37,704 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 376 for LOIs [2019-10-07 14:27:37,891 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 14:27:38,001 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 14:27:38,362 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 903 [2019-10-07 14:27:38,364 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1068 for LOIs [2019-10-07 14:27:39,002 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:39,447 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:39,561 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:40,282 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:40,734 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:41,166 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:41,281 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:42,194 WARN L191 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:42,690 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:43,130 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:43,242 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:43,956 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:44,919 WARN L191 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 1226 DAG size of output: 1068 [2019-10-07 14:27:45,356 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:45,546 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:46,267 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:46,711 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:47,350 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:47,456 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:48,165 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:48,590 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:49,019 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:49,126 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:50,050 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:50,486 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:50,914 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:51,021 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:51,733 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:52,161 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:52,590 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:52,910 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:53,628 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:54,057 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:54,501 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:54,617 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:55,344 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:56,016 WARN L191 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:56,451 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:56,562 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:57,286 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:57,720 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:58,173 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:27:58,282 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:27:59,210 WARN L191 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:27:59,643 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:00,087 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:00,195 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:00,922 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:01,367 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:02,032 WARN L191 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:28:02,141 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:02,859 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:04,387 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:05,106 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:05,221 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:06,151 WARN L191 SmtUtils]: Spent 928.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:07,477 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:28:08,192 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:08,307 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:09,239 WARN L191 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:09,963 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:10,685 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:10,793 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:11,510 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:12,495 WARN L191 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:28:13,217 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:28:13,335 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:14,063 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:15,911 WARN L191 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:16,635 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:16,754 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:17,491 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:18,720 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:28:19,445 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:28:19,555 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:20,279 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:21,012 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1233 [2019-10-07 14:28:21,747 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1233 [2019-10-07 14:28:21,858 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:22,598 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1233 [2019-10-07 14:28:23,333 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:24,073 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:24,186 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:24,923 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:26,553 WARN L191 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:27,365 WARN L191 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:27,482 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:28,223 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:28,963 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:29,702 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:29,823 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:30,553 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:31,290 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:32,019 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:32,129 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:32,858 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1235 [2019-10-07 14:28:34,465 WARN L191 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:28:35,183 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:35,331 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:36,060 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:37,373 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:28:38,101 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:38,218 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:38,939 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:39,728 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:40,460 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:40,566 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:41,291 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:42,621 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:28:43,343 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:43,463 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:44,181 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:45,494 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:28:46,226 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:46,350 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:47,064 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:47,794 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:48,524 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:48,633 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:49,357 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:50,587 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1226 [2019-10-07 14:28:51,315 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:28:51,430 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:52,149 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:53,371 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1228 [2019-10-07 14:28:54,093 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:28:54,208 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:28:54,933 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:28:56,239 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:28:56,956 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:57,070 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:28:57,783 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:59,082 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:28:59,798 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:28:59,929 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:00,664 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:01,388 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:02,105 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:02,212 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:02,920 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:04,241 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:04,954 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:05,066 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:05,781 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:07,083 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:07,807 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:07,922 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:08,642 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:09,963 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:10,674 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:10,788 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:11,500 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:12,821 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:13,527 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:13,642 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:14,357 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:15,059 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:15,764 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:15,870 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:16,581 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:17,879 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:18,603 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:18,721 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:19,449 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:20,665 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:29:21,382 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:29:21,498 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:22,227 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:23,437 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:29:24,158 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:29:24,265 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:24,973 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:26,248 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:29:26,953 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:29:27,065 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:27,783 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:29,066 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 14:29:29,783 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:29,914 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:30,630 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:29:31,926 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:32,640 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:32,753 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:33,458 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:34,796 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:35,514 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:35,647 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:36,363 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:37,089 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:37,816 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:37,923 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:38,639 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:39,385 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:40,119 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:40,241 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:40,963 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:42,260 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:42,974 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:43,094 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:43,800 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:45,084 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:45,791 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:45,904 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:46,605 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:47,906 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:29:48,612 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:48,722 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:49,447 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:50,149 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:50,860 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:50,970 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:29:51,681 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:29:53,058 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:53,790 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:53,903 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:54,641 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:55,957 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:29:56,701 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:56,813 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:57,515 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:58,231 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:58,944 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:59,051 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:29:59,780 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:01,097 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 14:30:01,826 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:01,947 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:02,678 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:03,999 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:30:04,719 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:04,832 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:05,541 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:06,848 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 14:30:07,550 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:07,662 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:08,367 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:09,074 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:09,788 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:09,901 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:10,607 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:12,284 WARN L191 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:13,005 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:13,124 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:13,845 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:15,146 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:15,860 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:15,971 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:16,675 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:17,384 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:18,123 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:18,231 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:18,946 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:20,161 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 14:30:20,889 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 14:30:21,010 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:21,718 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:22,910 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 14:30:23,618 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:23,738 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:24,460 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:25,709 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1228 [2019-10-07 14:30:26,429 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:26,545 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:27,272 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:28,488 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 14:30:29,206 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:29,321 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 14:30:30,049 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:30,055 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1084 for LOIs [2019-10-07 14:30:30,517 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:30:30,969 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:30:31,079 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:31,781 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:31,791 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1036 for LOIs [2019-10-07 14:30:32,169 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:30:32,550 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:30:32,669 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 14:30:33,387 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 14:30:33,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:33,654 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 14:30:33,661 INFO L168 Benchmark]: Toolchain (without parser) took 347454.57 ms. Allocated memory was 145.2 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 98.8 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:33,661 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 145.2 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 14:30:33,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1119.08 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 145.1 MB in the end (delta: -46.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:33,662 INFO L168 Benchmark]: Boogie Preprocessor took 199.93 ms. Allocated memory is still 203.4 MB. Free memory was 145.1 MB in the beginning and 135.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:33,662 INFO L168 Benchmark]: RCFGBuilder took 5299.55 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 135.1 MB in the beginning and 205.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 147.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:33,662 INFO L168 Benchmark]: TraceAbstraction took 340831.71 ms. Allocated memory was 291.5 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 205.7 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:33,664 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 145.2 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1119.08 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 145.1 MB in the end (delta: -46.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 199.93 ms. Allocated memory is still 203.4 MB. Free memory was 145.1 MB in the beginning and 135.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5299.55 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 135.1 MB in the beginning and 205.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 147.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 340831.71 ms. Allocated memory was 291.5 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 205.7 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 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...