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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:38,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:38,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:38,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:38,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:38,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:38,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:38,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:38,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:38,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:38,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:38,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:38,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:38,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:38,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:38,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:38,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:38,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:38,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:38,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:38,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:38,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:38,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:38,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:38,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:38,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:38,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:38,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:38,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:38,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:38,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:38,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:38,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:38,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:38,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:38,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:38,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:38,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:38,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:38,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:38,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:38,611 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 [2019-10-15 01:10:38,644 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:38,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:38,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:38,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:38,651 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:38,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:38,652 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:38,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:38,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:38,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:38,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:38,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:38,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:38,653 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:38,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:38,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:38,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:38,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:38,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:38,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:38,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:38,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:38,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:38,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:38,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:38,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:38,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:38,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:38,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:10:38,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:38,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:38,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:38,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:38,980 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:38,981 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-15 01:10:39,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96d1192/7a2aadac2ac84004af7f39603c6bd744/FLAGd13505ec1 [2019-10-15 01:10:39,690 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:39,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-15 01:10:39,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96d1192/7a2aadac2ac84004af7f39603c6bd744/FLAGd13505ec1 [2019-10-15 01:10:39,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa96d1192/7a2aadac2ac84004af7f39603c6bd744 [2019-10-15 01:10:39,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:39,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:39,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:39,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:39,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:39,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:39" (1/1) ... [2019-10-15 01:10:39,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120087b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:39, skipping insertion in model container [2019-10-15 01:10:39,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:39" (1/1) ... [2019-10-15 01:10:39,897 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:39,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:40,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:40,827 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:40,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:40,976 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:40,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40 WrapperNode [2019-10-15 01:10:40,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:40,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:40,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:40,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:40,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:40,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:41,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:41,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:41,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:41,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:41,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (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 [2019-10-15 01:10:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:41,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:41,268 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:41,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:41,268 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:41,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:41,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:41,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:41,277 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:41,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:43,991 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:43,992 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:43,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:43 BoogieIcfgContainer [2019-10-15 01:10:43,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:43,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:43,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:44,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:44,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:39" (1/3) ... [2019-10-15 01:10:44,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f70468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:44, skipping insertion in model container [2019-10-15 01:10:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40" (2/3) ... [2019-10-15 01:10:44,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f70468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:44, skipping insertion in model container [2019-10-15 01:10:44,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:43" (3/3) ... [2019-10-15 01:10:44,005 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-10-15 01:10:44,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:44,025 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:44,037 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:44,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:44,080 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:44,080 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:44,081 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:44,081 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:44,081 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:44,081 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:44,081 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-10-15 01:10:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:10:44,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,152 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:10:44,154 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,160 INFO L82 PathProgramCache]: Analyzing trace with hash -713058684, now seen corresponding path program 1 times [2019-10-15 01:10:44,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577969351] [2019-10-15 01:10:44,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:44,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577969351] [2019-10-15 01:10:44,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:44,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:44,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623993936] [2019-10-15 01:10:44,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:44,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:44,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:44,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:44,975 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 7 states. [2019-10-15 01:10:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:45,211 INFO L93 Difference]: Finished difference Result 1265 states and 2048 transitions. [2019-10-15 01:10:45,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:45,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-15 01:10:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:45,241 INFO L225 Difference]: With dead ends: 1265 [2019-10-15 01:10:45,241 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:45,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2019-10-15 01:10:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-15 01:10:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1019 transitions. [2019-10-15 01:10:45,425 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1019 transitions. Word has length 132 [2019-10-15 01:10:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:45,426 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 1019 transitions. [2019-10-15 01:10:45,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1019 transitions. [2019-10-15 01:10:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:10:45,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:45,445 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:45,446 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2033776308, now seen corresponding path program 1 times [2019-10-15 01:10:45,447 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:45,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754645275] [2019-10-15 01:10:45,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:45,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754645275] [2019-10-15 01:10:45,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:45,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109338162] [2019-10-15 01:10:45,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:45,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:45,682 INFO L87 Difference]: Start difference. First operand 639 states and 1019 transitions. Second operand 4 states. [2019-10-15 01:10:45,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:45,750 INFO L93 Difference]: Finished difference Result 1244 states and 2003 transitions. [2019-10-15 01:10:45,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:45,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-15 01:10:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:45,756 INFO L225 Difference]: With dead ends: 1244 [2019-10-15 01:10:45,756 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:10:45,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:10:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:10:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:10:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-10-15 01:10:45,790 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 133 [2019-10-15 01:10:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:45,791 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-10-15 01:10:45,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-10-15 01:10:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:10:45,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:45,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:45,796 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:45,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1652657134, now seen corresponding path program 1 times [2019-10-15 01:10:45,797 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:45,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123126461] [2019-10-15 01:10:45,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:46,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123126461] [2019-10-15 01:10:46,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:46,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:46,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880905912] [2019-10-15 01:10:46,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:46,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:46,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:46,024 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 7 states. [2019-10-15 01:10:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,119 INFO L93 Difference]: Finished difference Result 1213 states and 1945 transitions. [2019-10-15 01:10:46,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:46,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-15 01:10:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,125 INFO L225 Difference]: With dead ends: 1213 [2019-10-15 01:10:46,126 INFO L226 Difference]: Without dead ends: 615 [2019-10-15 01:10:46,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-15 01:10:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-15 01:10:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-15 01:10:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 973 transitions. [2019-10-15 01:10:46,155 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 973 transitions. Word has length 133 [2019-10-15 01:10:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,156 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 973 transitions. [2019-10-15 01:10:46,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 973 transitions. [2019-10-15 01:10:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:10:46,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,160 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:10:46,161 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1402803232, now seen corresponding path program 1 times [2019-10-15 01:10:46,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714897416] [2019-10-15 01:10:46,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:46,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714897416] [2019-10-15 01:10:46,436 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:46,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:46,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409527680] [2019-10-15 01:10:46,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:46,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:46,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:46,438 INFO L87 Difference]: Start difference. First operand 615 states and 973 transitions. Second operand 7 states. [2019-10-15 01:10:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,526 INFO L93 Difference]: Finished difference Result 1201 states and 1919 transitions. [2019-10-15 01:10:46,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:46,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-15 01:10:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,532 INFO L225 Difference]: With dead ends: 1201 [2019-10-15 01:10:46,532 INFO L226 Difference]: Without dead ends: 609 [2019-10-15 01:10:46,535 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-15 01:10:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2019-10-15 01:10:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-10-15 01:10:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 960 transitions. [2019-10-15 01:10:46,560 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 960 transitions. Word has length 134 [2019-10-15 01:10:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,560 INFO L462 AbstractCegarLoop]: Abstraction has 609 states and 960 transitions. [2019-10-15 01:10:46,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 960 transitions. [2019-10-15 01:10:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:10:46,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,565 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:46,565 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1674666634, now seen corresponding path program 1 times [2019-10-15 01:10:46,566 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310301343] [2019-10-15 01:10:46,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:46,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310301343] [2019-10-15 01:10:46,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:46,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:46,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238761206] [2019-10-15 01:10:46,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:46,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:46,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:46,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:46,738 INFO L87 Difference]: Start difference. First operand 609 states and 960 transitions. Second operand 7 states. [2019-10-15 01:10:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,826 INFO L93 Difference]: Finished difference Result 1189 states and 1893 transitions. [2019-10-15 01:10:46,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:46,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 01:10:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,831 INFO L225 Difference]: With dead ends: 1189 [2019-10-15 01:10:46,832 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:46,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 947 transitions. [2019-10-15 01:10:46,859 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 947 transitions. Word has length 135 [2019-10-15 01:10:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,859 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 947 transitions. [2019-10-15 01:10:46,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 947 transitions. [2019-10-15 01:10:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:10:46,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,866 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:46,866 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1533378921, now seen corresponding path program 1 times [2019-10-15 01:10:46,867 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488483832] [2019-10-15 01:10:46,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:47,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488483832] [2019-10-15 01:10:47,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:47,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296772131] [2019-10-15 01:10:47,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:47,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:47,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:47,112 INFO L87 Difference]: Start difference. First operand 603 states and 947 transitions. Second operand 7 states. [2019-10-15 01:10:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,211 INFO L93 Difference]: Finished difference Result 1177 states and 1867 transitions. [2019-10-15 01:10:47,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:47,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-15 01:10:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,217 INFO L225 Difference]: With dead ends: 1177 [2019-10-15 01:10:47,217 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:47,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 946 transitions. [2019-10-15 01:10:47,242 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 946 transitions. Word has length 135 [2019-10-15 01:10:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,243 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 946 transitions. [2019-10-15 01:10:47,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 946 transitions. [2019-10-15 01:10:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:10:47,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,248 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,248 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,249 INFO L82 PathProgramCache]: Analyzing trace with hash 939897276, now seen corresponding path program 1 times [2019-10-15 01:10:47,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179746527] [2019-10-15 01:10:47,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:47,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179746527] [2019-10-15 01:10:47,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:47,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628361696] [2019-10-15 01:10:47,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:47,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:47,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:47,390 INFO L87 Difference]: Start difference. First operand 603 states and 946 transitions. Second operand 5 states. [2019-10-15 01:10:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,467 INFO L93 Difference]: Finished difference Result 1176 states and 1864 transitions. [2019-10-15 01:10:47,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:47,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-10-15 01:10:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,473 INFO L225 Difference]: With dead ends: 1176 [2019-10-15 01:10:47,473 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:47,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 945 transitions. [2019-10-15 01:10:47,503 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 945 transitions. Word has length 136 [2019-10-15 01:10:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,504 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 945 transitions. [2019-10-15 01:10:47,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 945 transitions. [2019-10-15 01:10:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:10:47,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,511 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1962554060, now seen corresponding path program 1 times [2019-10-15 01:10:47,511 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037840456] [2019-10-15 01:10:47,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:47,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037840456] [2019-10-15 01:10:47,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:47,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931862717] [2019-10-15 01:10:47,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:47,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:47,670 INFO L87 Difference]: Start difference. First operand 603 states and 945 transitions. Second operand 5 states. [2019-10-15 01:10:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,742 INFO L93 Difference]: Finished difference Result 1176 states and 1862 transitions. [2019-10-15 01:10:47,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:47,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-10-15 01:10:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,748 INFO L225 Difference]: With dead ends: 1176 [2019-10-15 01:10:47,748 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:47,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2019-10-15 01:10:47,775 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 137 [2019-10-15 01:10:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,775 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2019-10-15 01:10:47,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2019-10-15 01:10:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:10:47,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,781 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,781 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1062439167, now seen corresponding path program 1 times [2019-10-15 01:10:47,782 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101522651] [2019-10-15 01:10:47,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:47,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101522651] [2019-10-15 01:10:47,965 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:47,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316983916] [2019-10-15 01:10:47,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:47,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:47,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:47,967 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand 5 states. [2019-10-15 01:10:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,041 INFO L93 Difference]: Finished difference Result 1176 states and 1860 transitions. [2019-10-15 01:10:48,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:48,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-15 01:10:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,046 INFO L225 Difference]: With dead ends: 1176 [2019-10-15 01:10:48,052 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:48,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 943 transitions. [2019-10-15 01:10:48,092 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 943 transitions. Word has length 138 [2019-10-15 01:10:48,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,093 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 943 transitions. [2019-10-15 01:10:48,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 943 transitions. [2019-10-15 01:10:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:10:48,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,097 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,098 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1753111833, now seen corresponding path program 1 times [2019-10-15 01:10:48,098 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898022014] [2019-10-15 01:10:48,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:48,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898022014] [2019-10-15 01:10:48,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:48,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:48,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833168779] [2019-10-15 01:10:48,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:48,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:48,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:48,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:48,245 INFO L87 Difference]: Start difference. First operand 603 states and 943 transitions. Second operand 5 states. [2019-10-15 01:10:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,330 INFO L93 Difference]: Finished difference Result 1176 states and 1858 transitions. [2019-10-15 01:10:48,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:48,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-15 01:10:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,337 INFO L225 Difference]: With dead ends: 1176 [2019-10-15 01:10:48,337 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:10:48,347 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:10:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:10:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:10:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 942 transitions. [2019-10-15 01:10:48,382 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 942 transitions. Word has length 139 [2019-10-15 01:10:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,383 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 942 transitions. [2019-10-15 01:10:48,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 942 transitions. [2019-10-15 01:10:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:10:48,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,389 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,389 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,389 INFO L82 PathProgramCache]: Analyzing trace with hash -477327290, now seen corresponding path program 1 times [2019-10-15 01:10:48,390 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945063016] [2019-10-15 01:10:48,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:10:48,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945063016] [2019-10-15 01:10:48,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376821240] [2019-10-15 01:10:48,629 INFO L94 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 [2019-10-15 01:10:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:49,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:49,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:49,473 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:49,613 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:49,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:49,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121801651] [2019-10-15 01:10:49,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:49,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:49,615 INFO L87 Difference]: Start difference. First operand 603 states and 942 transitions. Second operand 3 states. [2019-10-15 01:10:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:49,704 INFO L93 Difference]: Finished difference Result 1688 states and 2686 transitions. [2019-10-15 01:10:49,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:49,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-15 01:10:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:49,714 INFO L225 Difference]: With dead ends: 1688 [2019-10-15 01:10:49,714 INFO L226 Difference]: Without dead ends: 1119 [2019-10-15 01:10:49,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-10-15 01:10:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1106. [2019-10-15 01:10:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2019-10-15 01:10:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1747 transitions. [2019-10-15 01:10:49,790 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1747 transitions. Word has length 140 [2019-10-15 01:10:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:49,794 INFO L462 AbstractCegarLoop]: Abstraction has 1106 states and 1747 transitions. [2019-10-15 01:10:49,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1747 transitions. [2019-10-15 01:10:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:10:49,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:49,802 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:50,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:50,018 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -582772405, now seen corresponding path program 1 times [2019-10-15 01:10:50,019 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:50,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289430645] [2019-10-15 01:10:50,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:10:50,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289430645] [2019-10-15 01:10:50,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468777891] [2019-10-15 01:10:50,227 INFO L94 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 [2019-10-15 01:10:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:10:50,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:50,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:10:51,095 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:51,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 01:10:51,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480686790] [2019-10-15 01:10:51,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:51,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:51,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:51,097 INFO L87 Difference]: Start difference. First operand 1106 states and 1747 transitions. Second operand 3 states. [2019-10-15 01:10:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:51,249 INFO L93 Difference]: Finished difference Result 2191 states and 3498 transitions. [2019-10-15 01:10:51,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:51,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-15 01:10:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:51,259 INFO L225 Difference]: With dead ends: 2191 [2019-10-15 01:10:51,259 INFO L226 Difference]: Without dead ends: 1119 [2019-10-15 01:10:51,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-10-15 01:10:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1106. [2019-10-15 01:10:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2019-10-15 01:10:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1744 transitions. [2019-10-15 01:10:51,311 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1744 transitions. Word has length 144 [2019-10-15 01:10:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:51,312 INFO L462 AbstractCegarLoop]: Abstraction has 1106 states and 1744 transitions. [2019-10-15 01:10:51,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1744 transitions. [2019-10-15 01:10:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:10:51,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:51,318 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:51,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:51,535 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1124187117, now seen corresponding path program 1 times [2019-10-15 01:10:51,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:51,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010057264] [2019-10-15 01:10:51,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:51,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:10:51,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010057264] [2019-10-15 01:10:51,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515760254] [2019-10-15 01:10:51,790 INFO L94 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 [2019-10-15 01:10:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:52,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:52,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:52,444 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:10:52,562 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:52,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:52,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965486694] [2019-10-15 01:10:52,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:52,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:52,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:52,567 INFO L87 Difference]: Start difference. First operand 1106 states and 1744 transitions. Second operand 3 states. [2019-10-15 01:10:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,683 INFO L93 Difference]: Finished difference Result 2694 states and 4292 transitions. [2019-10-15 01:10:52,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:52,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-10-15 01:10:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,697 INFO L225 Difference]: With dead ends: 2694 [2019-10-15 01:10:52,698 INFO L226 Difference]: Without dead ends: 1622 [2019-10-15 01:10:52,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2019-10-15 01:10:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1573. [2019-10-15 01:10:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-10-15 01:10:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2504 transitions. [2019-10-15 01:10:52,791 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2504 transitions. Word has length 141 [2019-10-15 01:10:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,794 INFO L462 AbstractCegarLoop]: Abstraction has 1573 states and 2504 transitions. [2019-10-15 01:10:52,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2504 transitions. [2019-10-15 01:10:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:10:52,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,803 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:53,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:53,014 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash 925611022, now seen corresponding path program 1 times [2019-10-15 01:10:53,015 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:53,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480530707] [2019-10-15 01:10:53,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,016 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:53,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:10:53,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480530707] [2019-10-15 01:10:53,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034940594] [2019-10-15 01:10:53,223 INFO L94 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 [2019-10-15 01:10:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:10:53,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:10:53,829 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:10:53,977 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:53,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-15 01:10:53,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933231932] [2019-10-15 01:10:53,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:53,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:53,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:53,984 INFO L87 Difference]: Start difference. First operand 1573 states and 2504 transitions. Second operand 5 states. [2019-10-15 01:10:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:56,381 INFO L93 Difference]: Finished difference Result 7246 states and 11756 transitions. [2019-10-15 01:10:56,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:56,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-10-15 01:10:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:56,428 INFO L225 Difference]: With dead ends: 7246 [2019-10-15 01:10:56,429 INFO L226 Difference]: Without dead ends: 5707 [2019-10-15 01:10:56,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2019-10-15 01:10:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5587. [2019-10-15 01:10:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5587 states. [2019-10-15 01:10:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8894 transitions. [2019-10-15 01:10:56,696 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8894 transitions. Word has length 143 [2019-10-15 01:10:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:56,696 INFO L462 AbstractCegarLoop]: Abstraction has 5587 states and 8894 transitions. [2019-10-15 01:10:56,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8894 transitions. [2019-10-15 01:10:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:10:56,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:56,710 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:56,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:56,921 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash -417413109, now seen corresponding path program 1 times [2019-10-15 01:10:56,922 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:56,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843984343] [2019-10-15 01:10:56,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:56,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:56,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:10:57,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843984343] [2019-10-15 01:10:57,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182077732] [2019-10-15 01:10:57,099 INFO L94 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 [2019-10-15 01:10:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:57,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:10:57,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:10:57,782 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:10:57,889 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:57,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 01:10:57,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15949786] [2019-10-15 01:10:57,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:57,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:57,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:57,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:57,891 INFO L87 Difference]: Start difference. First operand 5587 states and 8894 transitions. Second operand 3 states. [2019-10-15 01:10:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:58,252 INFO L93 Difference]: Finished difference Result 15516 states and 24978 transitions. [2019-10-15 01:10:58,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:58,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:10:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:58,340 INFO L225 Difference]: With dead ends: 15516 [2019-10-15 01:10:58,340 INFO L226 Difference]: Without dead ends: 10004 [2019-10-15 01:10:58,374 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2019-10-15 01:10:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9901. [2019-10-15 01:10:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9901 states. [2019-10-15 01:10:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 15806 transitions. [2019-10-15 01:10:58,770 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 15806 transitions. Word has length 149 [2019-10-15 01:10:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:58,770 INFO L462 AbstractCegarLoop]: Abstraction has 9901 states and 15806 transitions. [2019-10-15 01:10:58,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 15806 transitions. [2019-10-15 01:10:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:10:58,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:58,779 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:58,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:58,988 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:58,989 INFO L82 PathProgramCache]: Analyzing trace with hash -550740010, now seen corresponding path program 1 times [2019-10-15 01:10:58,989 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:58,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891974647] [2019-10-15 01:10:58,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:10:59,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891974647] [2019-10-15 01:10:59,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526535263] [2019-10-15 01:10:59,163 INFO L94 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 [2019-10-15 01:10:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:59,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:10:59,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 01:10:59,981 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:00,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:00,351 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:00,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-15 01:11:00,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609097583] [2019-10-15 01:11:00,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:11:00,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:11:00,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:00,355 INFO L87 Difference]: Start difference. First operand 9901 states and 15806 transitions. Second operand 15 states. [2019-10-15 01:11:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:05,463 INFO L93 Difference]: Finished difference Result 22354 states and 36103 transitions. [2019-10-15 01:11:05,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 01:11:05,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2019-10-15 01:11:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:05,569 INFO L225 Difference]: With dead ends: 22354 [2019-10-15 01:11:05,570 INFO L226 Difference]: Without dead ends: 12471 [2019-10-15 01:11:05,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 285 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:11:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2019-10-15 01:11:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 12390. [2019-10-15 01:11:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12390 states. [2019-10-15 01:11:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 19816 transitions. [2019-10-15 01:11:06,338 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 19816 transitions. Word has length 148 [2019-10-15 01:11:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:06,339 INFO L462 AbstractCegarLoop]: Abstraction has 12390 states and 19816 transitions. [2019-10-15 01:11:06,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:11:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 19816 transitions. [2019-10-15 01:11:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:11:06,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:06,348 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:06,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:06,555 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:06,556 INFO L82 PathProgramCache]: Analyzing trace with hash -617384536, now seen corresponding path program 1 times [2019-10-15 01:11:06,556 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:06,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561147915] [2019-10-15 01:11:06,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:11:06,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561147915] [2019-10-15 01:11:06,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375494852] [2019-10-15 01:11:06,691 INFO L94 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 [2019-10-15 01:11:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:07,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:11:07,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 01:11:07,366 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:07,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:07,797 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:07,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-10-15 01:11:07,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261098891] [2019-10-15 01:11:07,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:11:07,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:11:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:07,801 INFO L87 Difference]: Start difference. First operand 12390 states and 19816 transitions. Second operand 15 states.