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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:24:19,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:24:19,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:24:19,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:24:19,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:24:19,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:24:19,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:24:19,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:24:19,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:24:19,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:24:19,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:24:19,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:24:19,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:24:19,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:24:19,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:24:19,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:24:19,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:24:19,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:24:19,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:24:19,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:24:19,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:24:19,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:24:19,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:24:19,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:24:19,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:24:19,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:24:19,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:24:19,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:24:19,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:24:19,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:24:19,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:24:19,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:24:19,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:24:19,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:24:19,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:24:19,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:24:19,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:24:19,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:24:19,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:24:19,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:24:19,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:24:19,547 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 14:24:19,570 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:24:19,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:24:19,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:24:19,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:24:19,573 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:24:19,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:24:19,573 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:24:19,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:24:19,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:24:19,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:24:19,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:24:19,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:24:19,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:24:19,575 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:24:19,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:24:19,576 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:24:19,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:24:19,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:24:19,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:24:19,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:24:19,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:24:19,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:24:19,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:24:19,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:24:19,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:24:19,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:24:19,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:24:19,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:24:19,578 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 14:24:19,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:24:19,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:24:19,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:24:19,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:24:19,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:24:19,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-07 14:24:19,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d17f165/b9ac0752c07349aea7fb5ab9f7a1dcfd/FLAG1b7b97dee [2019-10-07 14:24:20,560 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:24:20,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-07 14:24:20,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d17f165/b9ac0752c07349aea7fb5ab9f7a1dcfd/FLAG1b7b97dee [2019-10-07 14:24:20,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d17f165/b9ac0752c07349aea7fb5ab9f7a1dcfd [2019-10-07 14:24:20,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:24:20,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:24:20,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:20,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:24:20,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:24:20,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:20" (1/1) ... [2019-10-07 14:24:20,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74752006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:20, skipping insertion in model container [2019-10-07 14:24:20,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:20" (1/1) ... [2019-10-07 14:24:20,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:24:20,917 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:24:21,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:21,639 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:24:21,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:21,857 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:24:21,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21 WrapperNode [2019-10-07 14:24:21,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:21,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:24:21,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:24:21,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:24:21,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:21,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:21,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:21,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:22,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:22,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:22,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (1/1) ... [2019-10-07 14:24:22,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:24:22,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:24:22,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:24:22,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:24:22,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (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 14:24:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:24:22,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:24:22,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:22,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:24:22,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:22,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:24:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:24:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:24:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:24:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:24:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:24:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:24:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:24:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:22,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:24:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:24:22,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:24:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:24:22,266 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:24:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:24:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:24:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:24:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:24:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:24:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:24:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:24:22,269 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:24:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:24:22,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:24:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:24:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:24:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:24:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:24:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:24:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:24:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:24:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:24:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:24:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:24:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:24:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:24:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:24:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:24:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:24:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:24:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:24:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:24:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:24:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:24:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:24:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:24:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:24:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:24:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:24:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:24:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:24:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:24:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:24:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:24:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:24:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:24:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:24:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:24:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:24:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:24:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:24:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:24:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:24:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:24:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:24:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:24:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:24:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:24:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:24:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:24:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:24:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:24:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:24:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:24:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:24:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:24:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:24:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:24:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:24:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:24:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:24:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:24:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:24:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:24:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:24:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:24:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:24:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:24:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:24:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:24:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:24:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:24:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:24:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:24:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:24:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:24:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:24:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:24:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:24:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:24:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:24:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:24:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:24:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:24:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:24:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:24:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:24:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:24:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:24:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:24:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:24:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:24:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:24:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:24:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:24:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:24:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:24:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:24:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:24:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:24:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:24:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:24:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:24:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:24:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:24:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:24:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:24:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:24:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:24:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:24:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:24:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:24:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:24:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:24:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:24:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:24:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:24:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:24:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:24:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:24:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:24:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:24:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:24:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:24:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:24:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:24:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:24:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:24:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:24:27,441 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:24:27,442 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:24:27,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:27 BoogieIcfgContainer [2019-10-07 14:24:27,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:24:27,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:24:27,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:24:27,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:24:27,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:24:20" (1/3) ... [2019-10-07 14:24:27,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207650db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:27, skipping insertion in model container [2019-10-07 14:24:27,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:21" (2/3) ... [2019-10-07 14:24:27,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207650db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:27, skipping insertion in model container [2019-10-07 14:24:27,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:27" (3/3) ... [2019-10-07 14:24:27,450 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-10-07 14:24:27,460 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:24:27,469 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:24:27,480 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:24:27,512 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:24:27,512 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:24:27,512 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:24:27,512 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:24:27,512 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:24:27,512 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:24:27,512 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:24:27,513 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:24:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states. [2019-10-07 14:24:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:24:27,567 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:27,568 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:27,570 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash 138633928, now seen corresponding path program 1 times [2019-10-07 14:24:27,586 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:27,586 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:27,587 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:27,587 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:24:28,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:28,375 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:28,375 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:24:28,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:24:28,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:24:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:24:28,398 INFO L87 Difference]: Start difference. First operand 588 states. Second operand 7 states. [2019-10-07 14:24:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:31,774 INFO L93 Difference]: Finished difference Result 1754 states and 2733 transitions. [2019-10-07 14:24:31,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:24:31,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-07 14:24:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:31,806 INFO L225 Difference]: With dead ends: 1754 [2019-10-07 14:24:31,806 INFO L226 Difference]: Without dead ends: 1288 [2019-10-07 14:24:31,818 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:24:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-10-07 14:24:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1248. [2019-10-07 14:24:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-10-07 14:24:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1923 transitions. [2019-10-07 14:24:32,023 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1923 transitions. Word has length 119 [2019-10-07 14:24:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:32,024 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1923 transitions. [2019-10-07 14:24:32,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:24:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1923 transitions. [2019-10-07 14:24:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:24:32,032 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:32,033 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:32,033 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -306320997, now seen corresponding path program 1 times [2019-10-07 14:24:32,034 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:32,034 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:32,034 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,035 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:32,401 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:32,401 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:32,401 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 14:24:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:33,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:33,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:33,115 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:24:33,288 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:33,289 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:24:33,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:24:33,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:24:33,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:24:33,291 INFO L87 Difference]: Start difference. First operand 1248 states and 1923 transitions. Second operand 3 states. [2019-10-07 14:24:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:33,528 INFO L93 Difference]: Finished difference Result 3516 states and 5546 transitions. [2019-10-07 14:24:33,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:24:33,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-07 14:24:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:33,553 INFO L225 Difference]: With dead ends: 3516 [2019-10-07 14:24:33,553 INFO L226 Difference]: Without dead ends: 2299 [2019-10-07 14:24:33,566 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:24:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-07 14:24:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2231. [2019-10-07 14:24:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2019-10-07 14:24:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3466 transitions. [2019-10-07 14:24:33,763 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3466 transitions. Word has length 118 [2019-10-07 14:24:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:33,764 INFO L462 AbstractCegarLoop]: Abstraction has 2231 states and 3466 transitions. [2019-10-07 14:24:33,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:24:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3466 transitions. [2019-10-07 14:24:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:24:33,770 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:33,770 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:33,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:33,989 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:33,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:33,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1718735099, now seen corresponding path program 1 times [2019-10-07 14:24:33,990 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:33,990 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:33,991 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:33,991 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:34,322 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:34,322 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:34,322 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 14:24:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:35,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:35,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:24:35,040 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:24:35,216 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:35,217 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-07 14:24:35,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:24:35,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:24:35,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:35,218 INFO L87 Difference]: Start difference. First operand 2231 states and 3466 transitions. Second operand 4 states. [2019-10-07 14:24:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:35,409 INFO L93 Difference]: Finished difference Result 4313 states and 6775 transitions. [2019-10-07 14:24:35,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:24:35,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-07 14:24:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:35,428 INFO L225 Difference]: With dead ends: 4313 [2019-10-07 14:24:35,429 INFO L226 Difference]: Without dead ends: 2113 [2019-10-07 14:24:35,445 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2019-10-07 14:24:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2063. [2019-10-07 14:24:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2019-10-07 14:24:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3177 transitions. [2019-10-07 14:24:35,568 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3177 transitions. Word has length 120 [2019-10-07 14:24:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:35,569 INFO L462 AbstractCegarLoop]: Abstraction has 2063 states and 3177 transitions. [2019-10-07 14:24:35,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3177 transitions. [2019-10-07 14:24:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:24:35,573 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:35,573 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:35,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:35,782 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1806161369, now seen corresponding path program 1 times [2019-10-07 14:24:35,783 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:35,783 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:35,784 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:35,784 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:36,123 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:36,123 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:36,123 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 14:24:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:36,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:36,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:36,927 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:24:37,066 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:37,067 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:24:37,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:24:37,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:24:37,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:24:37,069 INFO L87 Difference]: Start difference. First operand 2063 states and 3177 transitions. Second operand 3 states. [2019-10-07 14:24:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:37,268 INFO L93 Difference]: Finished difference Result 5144 states and 8069 transitions. [2019-10-07 14:24:37,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:24:37,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-07 14:24:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:37,298 INFO L225 Difference]: With dead ends: 5144 [2019-10-07 14:24:37,298 INFO L226 Difference]: Without dead ends: 3112 [2019-10-07 14:24:37,311 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:24:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2019-10-07 14:24:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3027. [2019-10-07 14:24:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3027 states. [2019-10-07 14:24:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4688 transitions. [2019-10-07 14:24:37,484 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4688 transitions. Word has length 119 [2019-10-07 14:24:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:37,486 INFO L462 AbstractCegarLoop]: Abstraction has 3027 states and 4688 transitions. [2019-10-07 14:24:37,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:24:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4688 transitions. [2019-10-07 14:24:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:24:37,493 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:37,493 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:37,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:37,703 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:37,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1651845294, now seen corresponding path program 1 times [2019-10-07 14:24:37,703 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:37,704 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:37,704 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:37,704 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:24:38,016 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:38,016 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:38,017 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 14:24:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:38,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:24:38,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:24:38,968 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:39,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:39,308 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:39,308 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:24:39,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:24:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:24:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:24:39,311 INFO L87 Difference]: Start difference. First operand 3027 states and 4688 transitions. Second operand 6 states. [2019-10-07 14:24:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:40,899 INFO L93 Difference]: Finished difference Result 7950 states and 12529 transitions. [2019-10-07 14:24:40,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:24:40,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-07 14:24:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:40,938 INFO L225 Difference]: With dead ends: 7950 [2019-10-07 14:24:40,942 INFO L226 Difference]: Without dead ends: 4954 [2019-10-07 14:24:40,965 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:24:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2019-10-07 14:24:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4918. [2019-10-07 14:24:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4918 states. [2019-10-07 14:24:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 7492 transitions. [2019-10-07 14:24:41,206 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 7492 transitions. Word has length 120 [2019-10-07 14:24:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:41,208 INFO L462 AbstractCegarLoop]: Abstraction has 4918 states and 7492 transitions. [2019-10-07 14:24:41,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:24:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 7492 transitions. [2019-10-07 14:24:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:24:41,213 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:41,213 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:41,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:41,422 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2036031418, now seen corresponding path program 1 times [2019-10-07 14:24:41,422 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:41,423 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:41,423 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:41,423 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:41,718 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 14:24:41,720 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:41,720 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:41,720 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:24:41,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:24:41,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:24:41,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:41,723 INFO L87 Difference]: Start difference. First operand 4918 states and 7492 transitions. Second operand 10 states. [2019-10-07 14:24:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:45,206 INFO L93 Difference]: Finished difference Result 17622 states and 27575 transitions. [2019-10-07 14:24:45,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:24:45,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-07 14:24:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:45,346 INFO L225 Difference]: With dead ends: 17622 [2019-10-07 14:24:45,346 INFO L226 Difference]: Without dead ends: 12735 [2019-10-07 14:24:45,398 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:24:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-10-07 14:24:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 12462. [2019-10-07 14:24:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12462 states. [2019-10-07 14:24:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12462 states to 12462 states and 19328 transitions. [2019-10-07 14:24:46,131 INFO L78 Accepts]: Start accepts. Automaton has 12462 states and 19328 transitions. Word has length 125 [2019-10-07 14:24:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:46,134 INFO L462 AbstractCegarLoop]: Abstraction has 12462 states and 19328 transitions. [2019-10-07 14:24:46,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:24:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 12462 states and 19328 transitions. [2019-10-07 14:24:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 14:24:46,137 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:46,138 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:46,138 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:46,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:46,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1384513082, now seen corresponding path program 1 times [2019-10-07 14:24:46,139 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:46,139 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:46,139 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:46,139 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:24:46,372 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:46,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:46,373 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 14:24:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:47,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:24:47,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 14:24:47,439 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:47,608 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-07 14:24:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:24:47,938 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:47,939 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-07 14:24:47,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:24:47,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:24:47,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:24:47,940 INFO L87 Difference]: Start difference. First operand 12462 states and 19328 transitions. Second operand 7 states. [2019-10-07 14:24:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:50,876 INFO L93 Difference]: Finished difference Result 26186 states and 40588 transitions. [2019-10-07 14:24:50,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:24:50,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-07 14:24:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:50,949 INFO L225 Difference]: With dead ends: 26186 [2019-10-07 14:24:50,950 INFO L226 Difference]: Without dead ends: 13755 [2019-10-07 14:24:50,987 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:24:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2019-10-07 14:24:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13708. [2019-10-07 14:24:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2019-10-07 14:24:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 21011 transitions. [2019-10-07 14:24:51,525 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 21011 transitions. Word has length 131 [2019-10-07 14:24:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:51,525 INFO L462 AbstractCegarLoop]: Abstraction has 13708 states and 21011 transitions. [2019-10-07 14:24:51,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:24:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 21011 transitions. [2019-10-07 14:24:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-07 14:24:51,529 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:51,529 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:51,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:51,741 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1688174385, now seen corresponding path program 1 times [2019-10-07 14:24:51,742 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:51,742 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:51,742 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:51,742 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:24:51,934 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:51,934 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:51,934 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:24:51,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:24:51,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:24:51,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:51,935 INFO L87 Difference]: Start difference. First operand 13708 states and 21011 transitions. Second operand 10 states. [2019-10-07 14:24:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:52,479 INFO L93 Difference]: Finished difference Result 25501 states and 39277 transitions. [2019-10-07 14:24:52,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:24:52,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-10-07 14:24:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:52,552 INFO L225 Difference]: With dead ends: 25501 [2019-10-07 14:24:52,552 INFO L226 Difference]: Without dead ends: 13952 [2019-10-07 14:24:52,591 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states. [2019-10-07 14:24:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13952 to 13952. [2019-10-07 14:24:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13952 states. [2019-10-07 14:24:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13952 states to 13952 states and 21337 transitions. [2019-10-07 14:24:53,159 INFO L78 Accepts]: Start accepts. Automaton has 13952 states and 21337 transitions. Word has length 136 [2019-10-07 14:24:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:53,160 INFO L462 AbstractCegarLoop]: Abstraction has 13952 states and 21337 transitions. [2019-10-07 14:24:53,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:24:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13952 states and 21337 transitions. [2019-10-07 14:24:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 14:24:53,165 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:53,166 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:53,166 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1192482432, now seen corresponding path program 1 times [2019-10-07 14:24:53,166 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:53,167 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:53,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:53,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:24:53,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:53,498 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:53,498 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:24:53,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:24:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:24:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:24:53,500 INFO L87 Difference]: Start difference. First operand 13952 states and 21337 transitions. Second operand 14 states. [2019-10-07 14:25:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:03,782 INFO L93 Difference]: Finished difference Result 35265 states and 54968 transitions. [2019-10-07 14:25:03,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 14:25:03,782 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-07 14:25:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:03,908 INFO L225 Difference]: With dead ends: 35265 [2019-10-07 14:25:03,908 INFO L226 Difference]: Without dead ends: 24740 [2019-10-07 14:25:03,948 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:25:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24740 states. [2019-10-07 14:25:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24740 to 24160. [2019-10-07 14:25:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24160 states. [2019-10-07 14:25:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24160 states to 24160 states and 37209 transitions. [2019-10-07 14:25:04,928 INFO L78 Accepts]: Start accepts. Automaton has 24160 states and 37209 transitions. Word has length 140 [2019-10-07 14:25:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:04,929 INFO L462 AbstractCegarLoop]: Abstraction has 24160 states and 37209 transitions. [2019-10-07 14:25:04,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:25:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 24160 states and 37209 transitions. [2019-10-07 14:25:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 14:25:04,934 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:04,935 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:04,935 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1676156391, now seen corresponding path program 1 times [2019-10-07 14:25:04,936 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:04,936 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:04,936 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:04,936 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:25:05,121 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:05,121 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:05,121 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:25:05,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:25:05,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:25:05,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:25:05,122 INFO L87 Difference]: Start difference. First operand 24160 states and 37209 transitions. Second operand 8 states. [2019-10-07 14:25:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:06,590 INFO L93 Difference]: Finished difference Result 34813 states and 53739 transitions. [2019-10-07 14:25:06,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:25:06,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2019-10-07 14:25:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:06,767 INFO L225 Difference]: With dead ends: 34813 [2019-10-07 14:25:06,767 INFO L226 Difference]: Without dead ends: 24248 [2019-10-07 14:25:06,827 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24248 states. [2019-10-07 14:25:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24248 to 24202. [2019-10-07 14:25:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24202 states. [2019-10-07 14:25:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24202 states to 24202 states and 37237 transitions. [2019-10-07 14:25:08,955 INFO L78 Accepts]: Start accepts. Automaton has 24202 states and 37237 transitions. Word has length 167 [2019-10-07 14:25:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:08,955 INFO L462 AbstractCegarLoop]: Abstraction has 24202 states and 37237 transitions. [2019-10-07 14:25:08,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:25:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 24202 states and 37237 transitions. [2019-10-07 14:25:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-07 14:25:08,962 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:08,962 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:08,962 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash 457359907, now seen corresponding path program 1 times [2019-10-07 14:25:08,963 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:08,963 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:08,963 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:08,963 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:25:09,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:09,254 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:09,254 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:25:09,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:25:09,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:25:09,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:25:09,255 INFO L87 Difference]: Start difference. First operand 24202 states and 37237 transitions. Second operand 14 states. [2019-10-07 14:25:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:23,707 INFO L93 Difference]: Finished difference Result 49229 states and 78439 transitions. [2019-10-07 14:25:23,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:25:23,707 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2019-10-07 14:25:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:23,958 INFO L225 Difference]: With dead ends: 49229 [2019-10-07 14:25:23,958 INFO L226 Difference]: Without dead ends: 49198 [2019-10-07 14:25:23,984 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:25:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49198 states. [2019-10-07 14:25:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49198 to 47667. [2019-10-07 14:25:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47667 states. [2019-10-07 14:25:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47667 states to 47667 states and 74319 transitions. [2019-10-07 14:25:25,705 INFO L78 Accepts]: Start accepts. Automaton has 47667 states and 74319 transitions. Word has length 171 [2019-10-07 14:25:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:25,706 INFO L462 AbstractCegarLoop]: Abstraction has 47667 states and 74319 transitions. [2019-10-07 14:25:25,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:25:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 47667 states and 74319 transitions. [2019-10-07 14:25:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:25:25,717 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:25,717 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:25,718 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2010921320, now seen corresponding path program 1 times [2019-10-07 14:25:25,718 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:25,719 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:25,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:25,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-07 14:25:27,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:27,346 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:27,346 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 14:25:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:28,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:25:28,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:25:28,406 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:28,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-07 14:25:29,204 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:29,204 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:25:29,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:25:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:25:29,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:25:29,208 INFO L87 Difference]: Start difference. First operand 47667 states and 74319 transitions. Second operand 9 states. [2019-10-07 14:25:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:39,343 INFO L93 Difference]: Finished difference Result 119218 states and 188750 transitions. [2019-10-07 14:25:39,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:25:39,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2019-10-07 14:25:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:39,672 INFO L225 Difference]: With dead ends: 119218 [2019-10-07 14:25:39,673 INFO L226 Difference]: Without dead ends: 71582 [2019-10-07 14:25:39,771 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:25:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71582 states. [2019-10-07 14:25:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71582 to 70322. [2019-10-07 14:25:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70322 states. [2019-10-07 14:25:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70322 states to 70322 states and 110356 transitions. [2019-10-07 14:25:42,312 INFO L78 Accepts]: Start accepts. Automaton has 70322 states and 110356 transitions. Word has length 201 [2019-10-07 14:25:42,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:42,313 INFO L462 AbstractCegarLoop]: Abstraction has 70322 states and 110356 transitions. [2019-10-07 14:25:42,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:25:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 70322 states and 110356 transitions. [2019-10-07 14:25:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-07 14:25:42,326 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:42,326 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:42,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:42,535 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash -479000727, now seen corresponding path program 1 times [2019-10-07 14:25:42,535 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:42,535 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:42,535 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:42,535 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:25:42,725 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:42,725 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:42,725 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 14:25:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:45,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:25:45,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-07 14:25:45,443 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:25:45,739 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:45,739 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:25:45,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:45,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:45,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:25:45,740 INFO L87 Difference]: Start difference. First operand 70322 states and 110356 transitions. Second operand 3 states. [2019-10-07 14:25:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:48,206 INFO L93 Difference]: Finished difference Result 146290 states and 231800 transitions. [2019-10-07 14:25:48,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:48,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-07 14:25:48,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:48,575 INFO L225 Difference]: With dead ends: 146290 [2019-10-07 14:25:48,575 INFO L226 Difference]: Without dead ends: 75999 [2019-10-07 14:25:48,718 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 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 14:25:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75999 states. [2019-10-07 14:25:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75999 to 75258. [2019-10-07 14:25:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75258 states. [2019-10-07 14:25:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75258 states to 75258 states and 117908 transitions. [2019-10-07 14:25:51,438 INFO L78 Accepts]: Start accepts. Automaton has 75258 states and 117908 transitions. Word has length 214 [2019-10-07 14:25:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:51,438 INFO L462 AbstractCegarLoop]: Abstraction has 75258 states and 117908 transitions. [2019-10-07 14:25:51,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 75258 states and 117908 transitions. [2019-10-07 14:25:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-07 14:25:51,451 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:51,451 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:51,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:51,659 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash 345920207, now seen corresponding path program 1 times [2019-10-07 14:25:51,660 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:51,660 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:51,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:51,661 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:25:51,937 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:51,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:51,938 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 14:25:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:52,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 3480 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 14:25:52,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:25:52,851 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-10-07 14:25:53,390 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:53,390 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 10] total 18 [2019-10-07 14:25:53,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:25:53,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:25:53,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:25:53,392 INFO L87 Difference]: Start difference. First operand 75258 states and 117908 transitions. Second operand 9 states. [2019-10-07 14:25:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:59,850 INFO L93 Difference]: Finished difference Result 174992 states and 274978 transitions. [2019-10-07 14:25:59,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:25:59,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-07 14:25:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:00,277 INFO L225 Difference]: With dead ends: 174992 [2019-10-07 14:26:00,278 INFO L226 Difference]: Without dead ends: 121343 [2019-10-07 14:26:00,396 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:26:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121343 states. [2019-10-07 14:26:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121343 to 116270. [2019-10-07 14:26:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116270 states. [2019-10-07 14:26:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116270 states to 116270 states and 182002 transitions. [2019-10-07 14:26:08,611 INFO L78 Accepts]: Start accepts. Automaton has 116270 states and 182002 transitions. Word has length 219 [2019-10-07 14:26:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:08,612 INFO L462 AbstractCegarLoop]: Abstraction has 116270 states and 182002 transitions. [2019-10-07 14:26:08,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:26:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 116270 states and 182002 transitions. [2019-10-07 14:26:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 14:26:08,623 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:08,624 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:08,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:08,825 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 548181232, now seen corresponding path program 1 times [2019-10-07 14:26:08,826 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:08,826 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:08,826 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:08,827 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:26:09,171 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:09,171 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:09,172 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 14:26:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:10,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 3481 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 14:26:10,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:26:10,200 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-10-07 14:26:10,701 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:10,701 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 8] total 23 [2019-10-07 14:26:10,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:26:10,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:26:10,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:26:10,703 INFO L87 Difference]: Start difference. First operand 116270 states and 182002 transitions. Second operand 8 states. [2019-10-07 14:26:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:17,517 INFO L93 Difference]: Finished difference Result 164550 states and 258507 transitions. [2019-10-07 14:26:17,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:26:17,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2019-10-07 14:26:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:17,795 INFO L225 Difference]: With dead ends: 164550 [2019-10-07 14:26:17,795 INFO L226 Difference]: Without dead ends: 85439 [2019-10-07 14:26:17,931 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:26:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85439 states. [2019-10-07 14:26:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85439 to 85352. [2019-10-07 14:26:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85352 states. [2019-10-07 14:26:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85352 states to 85352 states and 133514 transitions. [2019-10-07 14:26:20,532 INFO L78 Accepts]: Start accepts. Automaton has 85352 states and 133514 transitions. Word has length 221 [2019-10-07 14:26:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:20,532 INFO L462 AbstractCegarLoop]: Abstraction has 85352 states and 133514 transitions. [2019-10-07 14:26:20,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:26:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 85352 states and 133514 transitions. [2019-10-07 14:26:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2019-10-07 14:26:20,547 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:20,547 INFO L385 BasicCegarLoop]: trace histogram [10, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:20,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:20,748 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1480930825, now seen corresponding path program 1 times [2019-10-07 14:26:20,749 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:20,750 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:20,750 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:20,750 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2019-10-07 14:26:21,103 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:21,103 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:21,103 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 14:26:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:22,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:26:22,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2019-10-07 14:26:22,207 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2019-10-07 14:26:22,687 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:26:22,688 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 11 [2019-10-07 14:26:22,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:26:22,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:26:22,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:22,689 INFO L87 Difference]: Start difference. First operand 85352 states and 133514 transitions. Second operand 4 states. [2019-10-07 14:26:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:25,253 INFO L93 Difference]: Finished difference Result 165141 states and 259630 transitions. [2019-10-07 14:26:25,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:26:25,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2019-10-07 14:26:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:25,598 INFO L225 Difference]: With dead ends: 165141 [2019-10-07 14:26:25,598 INFO L226 Difference]: Without dead ends: 85395 [2019-10-07 14:26:25,762 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85395 states. [2019-10-07 14:26:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85395 to 85307. [2019-10-07 14:26:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85307 states. [2019-10-07 14:26:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85307 states to 85307 states and 133431 transitions. [2019-10-07 14:26:31,550 INFO L78 Accepts]: Start accepts. Automaton has 85307 states and 133431 transitions. Word has length 366 [2019-10-07 14:26:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:31,551 INFO L462 AbstractCegarLoop]: Abstraction has 85307 states and 133431 transitions. [2019-10-07 14:26:31,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:26:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 85307 states and 133431 transitions. [2019-10-07 14:26:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-07 14:26:31,572 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:31,573 INFO L385 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:26:31,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:31,783 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash -3873415, now seen corresponding path program 1 times [2019-10-07 14:26:31,783 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:31,783 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:31,783 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:31,784 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-10-07 14:26:32,474 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:32,474 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:32,474 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 14:26:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:33,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:26:33,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 136 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 14:26:34,176 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:34,696 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:26:35,322 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:26:35,899 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:26:35,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:35,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:35,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:35,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:35,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:26:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-10-07 14:26:36,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:26:36,089 INFO L162 IcfgInterpreter]: Started Sifa with 132 locations of interest [2019-10-07 14:26:36,089 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:26:36,096 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:26:36,103 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:26:36,104 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:27:23,096 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 752 [2019-10-07 14:27:28,325 WARN L191 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:27:28,665 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 838 [2019-10-07 14:27:29,277 WARN L191 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 838 [2019-10-07 14:27:29,473 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 838 [2019-10-07 14:27:30,027 WARN L191 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:30,503 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:30,955 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:31,442 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:32,663 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1018 DAG size of output: 1016 [2019-10-07 14:27:33,094 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:33,632 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:34,061 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:34,499 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:35,233 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1016 [2019-10-07 14:27:35,251 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 373 for LOIs [2019-10-07 14:27:35,875 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 899 [2019-10-07 14:27:35,877 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1062 for LOIs [2019-10-07 14:27:36,310 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:36,736 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:36,844 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:37,804 WARN L191 SmtUtils]: Spent 958.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:38,239 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:38,655 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:39,440 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:39,885 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:40,574 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:40,795 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:41,558 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:42,327 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 1218 DAG size of output: 1062 [2019-10-07 14:27:43,021 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:43,205 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:43,896 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:44,321 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:44,741 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:45,809 WARN L191 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:46,226 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:46,653 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:46,756 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:47,446 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:47,865 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:48,561 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:48,664 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:49,358 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:49,779 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:50,199 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:50,302 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:51,292 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:51,720 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:52,140 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:52,243 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:52,927 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:53,347 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:54,047 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:54,154 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:54,845 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:55,260 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:55,671 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:55,778 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:27:56,768 WARN L191 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:57,185 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:57,599 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:58,382 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:58,797 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:27:59,491 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:28:00,277 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:01,193 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:01,888 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:02,286 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:02,982 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:05,143 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:06,122 WARN L191 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:06,235 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:06,942 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:07,642 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:08,623 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:08,728 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:09,423 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:10,165 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:10,857 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:10,966 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:11,669 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:13,159 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:13,860 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:13,970 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:14,672 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:15,385 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:16,087 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:16,192 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:16,899 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:17,619 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1225 [2019-10-07 14:28:18,330 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1225 [2019-10-07 14:28:18,468 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:19,176 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1225 [2019-10-07 14:28:19,872 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:20,571 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:20,680 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:21,385 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:22,146 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:22,858 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:22,975 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:23,686 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:24,967 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1229 DAG size of output: 1227 [2019-10-07 14:28:25,671 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:25,908 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:26,677 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:27,390 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:28,096 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:28,200 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:28,915 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:28:30,196 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:30,885 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:31,019 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:31,712 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:32,963 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:33,662 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:33,772 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:34,468 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:35,173 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:35,873 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:35,978 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:36,671 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:37,402 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:38,118 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:38,233 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:38,935 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:39,647 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:40,345 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:40,455 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:41,156 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:41,853 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:42,569 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:42,677 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:43,375 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:44,638 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1227 DAG size of output: 1218 [2019-10-07 14:28:45,341 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:28:45,451 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:46,149 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:47,404 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1229 DAG size of output: 1220 [2019-10-07 14:28:48,116 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:28:48,231 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:28:48,942 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1222 [2019-10-07 14:28:50,213 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:50,913 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:51,023 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:51,727 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:52,993 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:53,688 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:54,483 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:55,173 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:55,898 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:56,001 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:28:56,689 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:57,948 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:58,643 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:59,437 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:00,669 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:01,358 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:02,155 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:02,841 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:03,548 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:03,652 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:29:04,340 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:05,058 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:05,742 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:05,850 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:06,541 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:07,710 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:08,409 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:08,517 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:09,203 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:10,350 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:11,044 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:11,147 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:11,828 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:12,990 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1227 DAG size of output: 1220 [2019-10-07 14:29:13,683 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:13,791 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:14,476 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:15,644 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1229 DAG size of output: 1222 [2019-10-07 14:29:16,331 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1222 [2019-10-07 14:29:16,441 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:17,133 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1222 [2019-10-07 14:29:18,394 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1229 DAG size of output: 1227 [2019-10-07 14:29:19,090 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:29:19,197 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:19,891 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:29:21,131 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1229 DAG size of output: 1227 [2019-10-07 14:29:21,830 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:29:21,956 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:22,647 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-07 14:29:23,891 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:24,573 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:25,356 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:26,574 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:27,255 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:27,378 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:29:28,053 WARN L191 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:28,731 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:29,424 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:29,527 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:29:30,195 WARN L191 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:30,900 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:31,584 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:31,692 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:32,380 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:33,535 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:34,233 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:34,341 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:35,021 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:36,163 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:36,853 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:37,636 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:38,856 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:39,545 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:40,331 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:41,550 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1224 DAG size of output: 1220 [2019-10-07 14:29:42,233 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:42,342 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:43,026 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1222 [2019-10-07 14:29:44,275 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:44,953 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:45,738 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:46,969 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:47,647 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:48,436 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:49,676 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:50,354 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:51,141 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:52,359 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:53,047 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:53,168 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:29:53,845 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:54,534 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:55,217 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:55,997 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:57,174 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:29:57,854 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:57,962 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:29:58,650 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:29:59,825 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:30:00,504 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:30:00,623 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:30:01,304 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:02,596 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:30:03,276 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:04,058 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:05,546 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:30:06,226 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:07,008 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:07,685 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:08,373 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:09,152 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:09,869 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:10,555 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:10,670 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:30:11,355 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:12,512 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:30:13,199 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:30:13,991 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:15,150 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1222 DAG size of output: 1218 [2019-10-07 14:30:15,835 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:30:15,938 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:30:16,621 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:17,785 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1227 DAG size of output: 1220 [2019-10-07 14:30:18,687 WARN L191 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:18,794 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 425 [2019-10-07 14:30:19,476 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1220 [2019-10-07 14:30:19,483 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1080 for LOIs [2019-10-07 14:30:19,921 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1080 [2019-10-07 14:30:20,370 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1080 [2019-10-07 14:30:21,159 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:21,171 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1032 for LOIs [2019-10-07 14:30:21,544 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 1032 [2019-10-07 14:30:21,915 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 1032 [2019-10-07 14:30:22,019 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 422 [2019-10-07 14:30:22,704 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:30:22,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:22,965 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 14:30:22,971 INFO L168 Benchmark]: Toolchain (without parser) took 362160.35 ms. Allocated memory was 139.5 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 101.0 MB in the beginning and 1.0 GB in the end (delta: -946.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,971 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1046.32 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 143.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,972 INFO L168 Benchmark]: Boogie Preprocessor took 283.49 ms. Allocated memory is still 203.4 MB. Free memory was 143.8 MB in the beginning and 134.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,972 INFO L168 Benchmark]: RCFGBuilder took 5300.35 ms. Allocated memory was 203.4 MB in the beginning and 290.5 MB in the end (delta: 87.0 MB). Free memory was 134.1 MB in the beginning and 172.1 MB in the end (delta: -38.1 MB). Peak memory consumption was 141.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,973 INFO L168 Benchmark]: TraceAbstraction took 355525.50 ms. Allocated memory was 290.5 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 172.1 MB in the beginning and 1.0 GB in the end (delta: -875.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2019-10-07 14:30:22,974 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1046.32 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 143.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 283.49 ms. Allocated memory is still 203.4 MB. Free memory was 143.8 MB in the beginning and 134.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5300.35 ms. Allocated memory was 203.4 MB in the beginning and 290.5 MB in the end (delta: 87.0 MB). Free memory was 134.1 MB in the beginning and 172.1 MB in the end (delta: -38.1 MB). Peak memory consumption was 141.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 355525.50 ms. Allocated memory was 290.5 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 172.1 MB in the beginning and 1.0 GB in the end (delta: -875.3 MB). Peak memory consumption was 2.1 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...