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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:09,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:09,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:09,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:09,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:09,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:09,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:09,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:09,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:09,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:09,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:09,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:09,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:09,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:09,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:09,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:09,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:09,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:09,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:09,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:09,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:09,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:09,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:09,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:09,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:09,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:09,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:09,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:09,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:09,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:09,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:09,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:09,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:09,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:09,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:09,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:09,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:09,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:09,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:09,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:09,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:09,426 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 01:11:09,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:09,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:09,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:09,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:09,465 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:09,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:09,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:09,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:09,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:09,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:09,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:09,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:09,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:09,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:09,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:09,470 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:09,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:09,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:09,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:09,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:09,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:09,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:09,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:09,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:09,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:09,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:09,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:09,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:09,474 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 01:11:09,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:09,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:09,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:09,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:09,802 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:09,803 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-15 01:11:09,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347f9a3be/4ea52d12b8454777a2ab42fb3e00f7fd/FLAG206f54a67 [2019-10-15 01:11:10,563 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:10,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-15 01:11:10,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347f9a3be/4ea52d12b8454777a2ab42fb3e00f7fd/FLAG206f54a67 [2019-10-15 01:11:10,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347f9a3be/4ea52d12b8454777a2ab42fb3e00f7fd [2019-10-15 01:11:10,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:10,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:10,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:10,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:10,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:10,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b9758f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10, skipping insertion in model container [2019-10-15 01:11:10,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,748 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:10,829 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:11,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:11,607 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:11,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:11,921 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:11,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11 WrapperNode [2019-10-15 01:11:11,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:11,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:11,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:11,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:11,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:12,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:12,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:12,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:12,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:12,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:12,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:12,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:12,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (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 01:11:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-15 01:11:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-15 01:11:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-15 01:11:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:11:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:11:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:12,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:12,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:12,211 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:12,212 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:12,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:12,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:12,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:12,216 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:12,218 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:11:12,221 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-15 01:11:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-15 01:11:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-15 01:11:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-15 01:11:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-15 01:11:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:11:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:11:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:11:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:11:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:11:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-15 01:11:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:12,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:12,228 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:12,229 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:12,230 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:14,652 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:14,653 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:14,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:14 BoogieIcfgContainer [2019-10-15 01:11:14,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:14,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:14,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:14,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:14,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:10" (1/3) ... [2019-10-15 01:11:14,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cf200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:14, skipping insertion in model container [2019-10-15 01:11:14,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (2/3) ... [2019-10-15 01:11:14,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133cf200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:14, skipping insertion in model container [2019-10-15 01:11:14,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:14" (3/3) ... [2019-10-15 01:11:14,664 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-10-15 01:11:14,674 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:14,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:14,700 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:14,737 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:14,737 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:14,737 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:14,738 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:14,738 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:14,738 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:14,738 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:14,738 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states. [2019-10-15 01:11:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 01:11:14,844 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:14,848 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:14,851 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -895643454, now seen corresponding path program 1 times [2019-10-15 01:11:14,869 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:14,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719333670] [2019-10-15 01:11:14,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:15,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719333670] [2019-10-15 01:11:15,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:15,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297263673] [2019-10-15 01:11:15,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:15,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:15,574 INFO L87 Difference]: Start difference. First operand 949 states. Second operand 6 states. [2019-10-15 01:11:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,819 INFO L93 Difference]: Finished difference Result 1545 states and 2408 transitions. [2019-10-15 01:11:15,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:15,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2019-10-15 01:11:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,874 INFO L225 Difference]: With dead ends: 1545 [2019-10-15 01:11:15,876 INFO L226 Difference]: Without dead ends: 776 [2019-10-15 01:11:15,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2019-10-15 01:11:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2019-10-15 01:11:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-10-15 01:11:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1196 transitions. [2019-10-15 01:11:16,058 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1196 transitions. Word has length 127 [2019-10-15 01:11:16,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,066 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 1196 transitions. [2019-10-15 01:11:16,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1196 transitions. [2019-10-15 01:11:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 01:11:16,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,085 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:16,085 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1694033836, now seen corresponding path program 1 times [2019-10-15 01:11:16,086 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031506930] [2019-10-15 01:11:16,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:16,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031506930] [2019-10-15 01:11:16,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:16,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680333009] [2019-10-15 01:11:16,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:16,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:16,536 INFO L87 Difference]: Start difference. First operand 776 states and 1196 transitions. Second operand 7 states. [2019-10-15 01:11:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,723 INFO L93 Difference]: Finished difference Result 1508 states and 2347 transitions. [2019-10-15 01:11:16,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:16,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2019-10-15 01:11:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,738 INFO L225 Difference]: With dead ends: 1508 [2019-10-15 01:11:16,738 INFO L226 Difference]: Without dead ends: 785 [2019-10-15 01:11:16,744 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 01:11:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-10-15 01:11:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2019-10-15 01:11:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2019-10-15 01:11:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1205 transitions. [2019-10-15 01:11:16,803 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1205 transitions. Word has length 128 [2019-10-15 01:11:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,804 INFO L462 AbstractCegarLoop]: Abstraction has 783 states and 1205 transitions. [2019-10-15 01:11:16,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1205 transitions. [2019-10-15 01:11:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 01:11:16,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,814 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:16,814 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash 54665970, now seen corresponding path program 1 times [2019-10-15 01:11:16,815 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632241063] [2019-10-15 01:11:16,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:17,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632241063] [2019-10-15 01:11:17,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:17,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010379676] [2019-10-15 01:11:17,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:17,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:17,090 INFO L87 Difference]: Start difference. First operand 783 states and 1205 transitions. Second operand 4 states. [2019-10-15 01:11:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,190 INFO L93 Difference]: Finished difference Result 1511 states and 2348 transitions. [2019-10-15 01:11:17,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:17,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-15 01:11:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,201 INFO L225 Difference]: With dead ends: 1511 [2019-10-15 01:11:17,201 INFO L226 Difference]: Without dead ends: 765 [2019-10-15 01:11:17,209 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 01:11:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-15 01:11:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2019-10-15 01:11:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-10-15 01:11:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1172 transitions. [2019-10-15 01:11:17,250 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1172 transitions. Word has length 129 [2019-10-15 01:11:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,250 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 1172 transitions. [2019-10-15 01:11:17,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1172 transitions. [2019-10-15 01:11:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 01:11:17,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,255 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:17,255 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1943043330, now seen corresponding path program 1 times [2019-10-15 01:11:17,256 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189145557] [2019-10-15 01:11:17,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:17,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189145557] [2019-10-15 01:11:17,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:17,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788243487] [2019-10-15 01:11:17,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:17,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:17,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:17,590 INFO L87 Difference]: Start difference. First operand 765 states and 1172 transitions. Second operand 7 states. [2019-10-15 01:11:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,712 INFO L93 Difference]: Finished difference Result 1480 states and 2290 transitions. [2019-10-15 01:11:17,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:17,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-15 01:11:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,728 INFO L225 Difference]: With dead ends: 1480 [2019-10-15 01:11:17,729 INFO L226 Difference]: Without dead ends: 759 [2019-10-15 01:11:17,735 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 01:11:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-15 01:11:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2019-10-15 01:11:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2019-10-15 01:11:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1159 transitions. [2019-10-15 01:11:17,762 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1159 transitions. Word has length 129 [2019-10-15 01:11:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,764 INFO L462 AbstractCegarLoop]: Abstraction has 759 states and 1159 transitions. [2019-10-15 01:11:17,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1159 transitions. [2019-10-15 01:11:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 01:11:17,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,766 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:17,767 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,767 INFO L82 PathProgramCache]: Analyzing trace with hash 264736656, now seen corresponding path program 1 times [2019-10-15 01:11:17,767 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169697595] [2019-10-15 01:11:17,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:17,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169697595] [2019-10-15 01:11:17,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:17,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739008310] [2019-10-15 01:11:17,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:17,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:17,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:17,959 INFO L87 Difference]: Start difference. First operand 759 states and 1159 transitions. Second operand 7 states. [2019-10-15 01:11:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,058 INFO L93 Difference]: Finished difference Result 1468 states and 2264 transitions. [2019-10-15 01:11:18,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:18,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2019-10-15 01:11:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,069 INFO L225 Difference]: With dead ends: 1468 [2019-10-15 01:11:18,070 INFO L226 Difference]: Without dead ends: 753 [2019-10-15 01:11:18,074 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 01:11:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-15 01:11:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2019-10-15 01:11:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-15 01:11:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1146 transitions. [2019-10-15 01:11:18,125 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1146 transitions. Word has length 130 [2019-10-15 01:11:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,126 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1146 transitions. [2019-10-15 01:11:18,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1146 transitions. [2019-10-15 01:11:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:11:18,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,130 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:18,131 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1030829082, now seen corresponding path program 1 times [2019-10-15 01:11:18,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799399587] [2019-10-15 01:11:18,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:18,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799399587] [2019-10-15 01:11:18,379 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:18,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:18,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51204775] [2019-10-15 01:11:18,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:18,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:18,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:18,384 INFO L87 Difference]: Start difference. First operand 753 states and 1146 transitions. Second operand 7 states. [2019-10-15 01:11:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,496 INFO L93 Difference]: Finished difference Result 1456 states and 2238 transitions. [2019-10-15 01:11:18,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:18,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 01:11:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,503 INFO L225 Difference]: With dead ends: 1456 [2019-10-15 01:11:18,504 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:18,508 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 01:11:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1133 transitions. [2019-10-15 01:11:18,539 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1133 transitions. Word has length 131 [2019-10-15 01:11:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,540 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1133 transitions. [2019-10-15 01:11:18,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1133 transitions. [2019-10-15 01:11:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:11:18,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,543 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:18,544 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1840417433, now seen corresponding path program 1 times [2019-10-15 01:11:18,544 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113383885] [2019-10-15 01:11:18,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:18,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113383885] [2019-10-15 01:11:18,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:18,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:18,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082733701] [2019-10-15 01:11:18,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:18,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:18,721 INFO L87 Difference]: Start difference. First operand 747 states and 1133 transitions. Second operand 7 states. [2019-10-15 01:11:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,820 INFO L93 Difference]: Finished difference Result 1444 states and 2212 transitions. [2019-10-15 01:11:18,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:18,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 01:11:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,828 INFO L225 Difference]: With dead ends: 1444 [2019-10-15 01:11:18,828 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:18,833 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 01:11:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1132 transitions. [2019-10-15 01:11:18,868 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1132 transitions. Word has length 131 [2019-10-15 01:11:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,870 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1132 transitions. [2019-10-15 01:11:18,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1132 transitions. [2019-10-15 01:11:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:11:18,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,872 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:18,872 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 948639604, now seen corresponding path program 1 times [2019-10-15 01:11:18,873 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442452982] [2019-10-15 01:11:18,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:19,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442452982] [2019-10-15 01:11:19,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:19,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:19,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126020295] [2019-10-15 01:11:19,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:19,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:19,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:19,029 INFO L87 Difference]: Start difference. First operand 747 states and 1132 transitions. Second operand 5 states. [2019-10-15 01:11:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:19,108 INFO L93 Difference]: Finished difference Result 1443 states and 2209 transitions. [2019-10-15 01:11:19,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:19,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-15 01:11:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:19,116 INFO L225 Difference]: With dead ends: 1443 [2019-10-15 01:11:19,116 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:19,121 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 01:11:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1131 transitions. [2019-10-15 01:11:19,154 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1131 transitions. Word has length 132 [2019-10-15 01:11:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:19,158 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1131 transitions. [2019-10-15 01:11:19,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1131 transitions. [2019-10-15 01:11:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:19,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:19,160 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:19,161 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:19,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1456106658, now seen corresponding path program 1 times [2019-10-15 01:11:19,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:19,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433104339] [2019-10-15 01:11:19,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:19,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433104339] [2019-10-15 01:11:19,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:19,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:19,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704663817] [2019-10-15 01:11:19,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:19,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:19,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:19,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:19,478 INFO L87 Difference]: Start difference. First operand 747 states and 1131 transitions. Second operand 5 states. [2019-10-15 01:11:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:19,575 INFO L93 Difference]: Finished difference Result 1443 states and 2207 transitions. [2019-10-15 01:11:19,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:19,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-15 01:11:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:19,585 INFO L225 Difference]: With dead ends: 1443 [2019-10-15 01:11:19,585 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:19,591 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 01:11:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1130 transitions. [2019-10-15 01:11:19,626 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1130 transitions. Word has length 133 [2019-10-15 01:11:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:19,627 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1130 transitions. [2019-10-15 01:11:19,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1130 transitions. [2019-10-15 01:11:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:11:19,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:19,630 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:19,630 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:19,631 INFO L82 PathProgramCache]: Analyzing trace with hash 857053327, now seen corresponding path program 1 times [2019-10-15 01:11:19,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:19,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063927554] [2019-10-15 01:11:19,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:19,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063927554] [2019-10-15 01:11:19,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:19,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:19,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472922161] [2019-10-15 01:11:19,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:19,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:19,827 INFO L87 Difference]: Start difference. First operand 747 states and 1130 transitions. Second operand 5 states. [2019-10-15 01:11:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:19,920 INFO L93 Difference]: Finished difference Result 1443 states and 2205 transitions. [2019-10-15 01:11:19,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:19,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-10-15 01:11:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:19,930 INFO L225 Difference]: With dead ends: 1443 [2019-10-15 01:11:19,930 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:19,936 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 01:11:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1129 transitions. [2019-10-15 01:11:19,974 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1129 transitions. Word has length 134 [2019-10-15 01:11:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:19,975 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1129 transitions. [2019-10-15 01:11:19,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1129 transitions. [2019-10-15 01:11:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:11:19,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:19,979 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:19,980 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash -898548391, now seen corresponding path program 1 times [2019-10-15 01:11:19,981 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:19,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557687872] [2019-10-15 01:11:19,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:19,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:20,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557687872] [2019-10-15 01:11:20,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:20,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:20,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109245717] [2019-10-15 01:11:20,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:20,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:20,137 INFO L87 Difference]: Start difference. First operand 747 states and 1129 transitions. Second operand 5 states. [2019-10-15 01:11:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:20,200 INFO L93 Difference]: Finished difference Result 1443 states and 2203 transitions. [2019-10-15 01:11:20,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:20,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-10-15 01:11:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:20,207 INFO L225 Difference]: With dead ends: 1443 [2019-10-15 01:11:20,207 INFO L226 Difference]: Without dead ends: 747 [2019-10-15 01:11:20,212 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 01:11:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-15 01:11:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-15 01:11:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-15 01:11:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1128 transitions. [2019-10-15 01:11:20,239 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1128 transitions. Word has length 135 [2019-10-15 01:11:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:20,240 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1128 transitions. [2019-10-15 01:11:20,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1128 transitions. [2019-10-15 01:11:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:11:20,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:20,243 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:20,243 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash 63255978, now seen corresponding path program 1 times [2019-10-15 01:11:20,244 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:20,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305522173] [2019-10-15 01:11:20,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:11:20,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305522173] [2019-10-15 01:11:20,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265405897] [2019-10-15 01:11:20,493 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 01:11:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:11:21,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:21,550 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:21,748 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:21,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:11:21,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784409754] [2019-10-15 01:11:21,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:21,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:21,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:21,752 INFO L87 Difference]: Start difference. First operand 747 states and 1128 transitions. Second operand 3 states. [2019-10-15 01:11:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:21,874 INFO L93 Difference]: Finished difference Result 2129 states and 3266 transitions. [2019-10-15 01:11:21,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:21,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2019-10-15 01:11:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:21,891 INFO L225 Difference]: With dead ends: 2129 [2019-10-15 01:11:21,891 INFO L226 Difference]: Without dead ends: 1437 [2019-10-15 01:11:21,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2019-10-15 01:11:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1433. [2019-10-15 01:11:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2019-10-15 01:11:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2189 transitions. [2019-10-15 01:11:21,985 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2189 transitions. Word has length 136 [2019-10-15 01:11:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:21,987 INFO L462 AbstractCegarLoop]: Abstraction has 1433 states and 2189 transitions. [2019-10-15 01:11:21,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2189 transitions. [2019-10-15 01:11:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:11:21,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:21,993 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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] [2019-10-15 01:11:22,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:22,208 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash -983256524, now seen corresponding path program 1 times [2019-10-15 01:11:22,209 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146208806] [2019-10-15 01:11:22,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:11:22,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146208806] [2019-10-15 01:11:22,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839294447] [2019-10-15 01:11:22,526 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 01:11:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:23,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:23,194 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:23,334 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:23,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:11:23,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817517618] [2019-10-15 01:11:23,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:23,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:23,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:23,338 INFO L87 Difference]: Start difference. First operand 1433 states and 2189 transitions. Second operand 3 states. [2019-10-15 01:11:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,467 INFO L93 Difference]: Finished difference Result 4037 states and 6269 transitions. [2019-10-15 01:11:23,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:23,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-15 01:11:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,490 INFO L225 Difference]: With dead ends: 4037 [2019-10-15 01:11:23,490 INFO L226 Difference]: Without dead ends: 2683 [2019-10-15 01:11:23,501 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2019-10-15 01:11:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2661. [2019-10-15 01:11:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2661 states. [2019-10-15 01:11:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4091 transitions. [2019-10-15 01:11:23,702 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4091 transitions. Word has length 137 [2019-10-15 01:11:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,703 INFO L462 AbstractCegarLoop]: Abstraction has 2661 states and 4091 transitions. [2019-10-15 01:11:23,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4091 transitions. [2019-10-15 01:11:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:11:23,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,706 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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 01:11:23,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:23,921 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1740928992, now seen corresponding path program 1 times [2019-10-15 01:11:23,922 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271971068] [2019-10-15 01:11:23,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:11:24,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271971068] [2019-10-15 01:11:24,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390527628] [2019-10-15 01:11:24,112 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 01:11:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:24,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:24,976 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:25,154 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:25,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:11:25,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386891886] [2019-10-15 01:11:25,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:25,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:25,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:25,161 INFO L87 Difference]: Start difference. First operand 2661 states and 4091 transitions. Second operand 3 states. [2019-10-15 01:11:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,411 INFO L93 Difference]: Finished difference Result 6493 states and 10080 transitions. [2019-10-15 01:11:25,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:25,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-15 01:11:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,460 INFO L225 Difference]: With dead ends: 6493 [2019-10-15 01:11:25,460 INFO L226 Difference]: Without dead ends: 3911 [2019-10-15 01:11:25,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2019-10-15 01:11:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3817. [2019-10-15 01:11:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2019-10-15 01:11:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 5898 transitions. [2019-10-15 01:11:25,807 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 5898 transitions. Word has length 138 [2019-10-15 01:11:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,810 INFO L462 AbstractCegarLoop]: Abstraction has 3817 states and 5898 transitions. [2019-10-15 01:11:25,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 5898 transitions. [2019-10-15 01:11:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:11:25,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,818 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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 01:11:26,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:26,038 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash -369524467, now seen corresponding path program 1 times [2019-10-15 01:11:26,039 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100135099] [2019-10-15 01:11:26,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:26,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100135099] [2019-10-15 01:11:26,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:26,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909049508] [2019-10-15 01:11:26,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:26,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:26,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:26,452 INFO L87 Difference]: Start difference. First operand 3817 states and 5898 transitions. Second operand 7 states. [2019-10-15 01:11:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:30,297 INFO L93 Difference]: Finished difference Result 11249 states and 17910 transitions. [2019-10-15 01:11:30,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:30,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2019-10-15 01:11:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:30,355 INFO L225 Difference]: With dead ends: 11249 [2019-10-15 01:11:30,355 INFO L226 Difference]: Without dead ends: 7511 [2019-10-15 01:11:30,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2019-10-15 01:11:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 7375. [2019-10-15 01:11:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2019-10-15 01:11:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 11600 transitions. [2019-10-15 01:11:30,762 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 11600 transitions. Word has length 140 [2019-10-15 01:11:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:30,763 INFO L462 AbstractCegarLoop]: Abstraction has 7375 states and 11600 transitions. [2019-10-15 01:11:30,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 11600 transitions. [2019-10-15 01:11:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:11:30,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:30,767 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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 01:11:30,768 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1455513363, now seen corresponding path program 1 times [2019-10-15 01:11:30,768 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:30,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873621896] [2019-10-15 01:11:30,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:30,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:30,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:11:30,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873621896] [2019-10-15 01:11:30,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668561685] [2019-10-15 01:11:30,949 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 01:11:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:31,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:11:31,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:11:31,787 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:32,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:32,190 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:32,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [10] total 19 [2019-10-15 01:11:32,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707804893] [2019-10-15 01:11:32,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:11:32,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:11:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:11:32,194 INFO L87 Difference]: Start difference. First operand 7375 states and 11600 transitions. Second operand 11 states. [2019-10-15 01:11:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:38,989 INFO L93 Difference]: Finished difference Result 33339 states and 53967 transitions. [2019-10-15 01:11:38,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:11:38,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2019-10-15 01:11:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:39,221 INFO L225 Difference]: With dead ends: 33339 [2019-10-15 01:11:39,222 INFO L226 Difference]: Without dead ends: 26043 [2019-10-15 01:11:39,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:11:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26043 states. [2019-10-15 01:11:40,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26043 to 25815. [2019-10-15 01:11:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25815 states. [2019-10-15 01:11:40,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25815 states to 25815 states and 40631 transitions. [2019-10-15 01:11:40,418 INFO L78 Accepts]: Start accepts. Automaton has 25815 states and 40631 transitions. Word has length 141 [2019-10-15 01:11:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:40,418 INFO L462 AbstractCegarLoop]: Abstraction has 25815 states and 40631 transitions. [2019-10-15 01:11:40,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:11:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 25815 states and 40631 transitions. [2019-10-15 01:11:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:11:40,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:40,422 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 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 01:11:40,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:40,629 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1904993576, now seen corresponding path program 1 times [2019-10-15 01:11:40,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:40,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724382802] [2019-10-15 01:11:40,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:40,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:40,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:11:40,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724382802] [2019-10-15 01:11:40,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:40,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:40,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710371340] [2019-10-15 01:11:40,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:40,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:40,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:40,795 INFO L87 Difference]: Start difference. First operand 25815 states and 40631 transitions. Second operand 4 states.