/usr/bin/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-fb55353 [2019-11-07 00:44:33,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:44:33,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:44:33,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:44:33,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:44:33,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:44:33,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:44:33,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:44:33,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:44:33,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:44:33,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:44:33,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:44:33,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:44:33,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:44:33,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:44:33,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:44:33,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:44:33,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:44:33,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:44:33,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:44:33,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:44:33,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:44:33,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:44:33,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:44:33,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:44:33,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:44:33,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:44:33,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:44:33,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:44:33,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:44:33,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:44:33,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:44:33,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:44:33,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:44:33,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:44:33,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:44:33,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:44:33,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:44:33,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:44:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:44:33,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:44:33,142 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 [2019-11-07 00:44:33,168 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:44:33,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:44:33,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:44:33,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:44:33,173 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:44:33,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:44:33,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:44:33,175 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:44:33,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:44:33,175 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:44:33,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:44:33,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:44:33,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:44:33,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:44:33,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:44:33,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:44:33,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:44:33,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:44:33,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:44:33,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:44:33,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:44:33,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:44:33,181 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 [2019-11-07 00:44:33,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:44:33,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:44:33,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:44:33,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:44:33,464 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:44:33,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-11-07 00:44:33,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaadd68a/fccb688d558e4749bf52c3ffdb35ee4b/FLAGd4c9e5065 [2019-11-07 00:44:34,226 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:44:34,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-11-07 00:44:34,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaadd68a/fccb688d558e4749bf52c3ffdb35ee4b/FLAGd4c9e5065 [2019-11-07 00:44:34,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaadd68a/fccb688d558e4749bf52c3ffdb35ee4b [2019-11-07 00:44:34,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:44:34,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:44:34,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:44:34,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:44:34,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:34" (1/1) ... [2019-11-07 00:44:34,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5b7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:34, skipping insertion in model container [2019-11-07 00:44:34,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:34" (1/1) ... [2019-11-07 00:44:34,410 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:44:34,502 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:44:35,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:35,289 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:44:35,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:35,558 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:44:35,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35 WrapperNode [2019-11-07 00:44:35,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:35,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:44:35,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:44:35,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:44:35,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (1/1) ... [2019-11-07 00:44:35,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:44:35,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:44:35,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:44:35,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:44:35,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (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 [2019-11-07 00:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:44:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:44:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:44:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:44:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:44:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:44:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:44:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:44:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:44:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:44:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:44:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 00:44:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 00:44:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:44:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 00:44:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:44:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:44:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:44:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 00:44:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:44:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:44:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:44:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:44:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:44:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:44:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:44:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:44:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:44:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:44:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:44:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:44:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:44:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:44:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:44:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:44:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:44:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:44:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:44:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:44:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:44:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:44:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:44:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:44:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:44:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:44:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 00:44:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 00:44:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 00:44:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 00:44:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:44:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:44:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:44:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:44:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:44:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:44:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:44:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:44:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 00:44:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 00:44:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:44:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:44:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 00:44:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 00:44:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:44:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:44:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:44:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:44:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:44:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:44:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:44:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:44:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:44:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:44:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:44:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:44:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:44:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:44:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:44:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:44:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:44:38,424 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:44:38,425 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:44:38,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:38 BoogieIcfgContainer [2019-11-07 00:44:38,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:44:38,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:44:38,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:44:38,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:44:38,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:34" (1/3) ... [2019-11-07 00:44:38,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5c4508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:38, skipping insertion in model container [2019-11-07 00:44:38,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:35" (2/3) ... [2019-11-07 00:44:38,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5c4508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:38, skipping insertion in model container [2019-11-07 00:44:38,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:38" (3/3) ... [2019-11-07 00:44:38,438 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-11-07 00:44:38,450 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:44:38,460 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:44:38,473 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:44:38,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:44:38,520 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:44:38,520 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:44:38,520 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:44:38,520 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:44:38,520 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:44:38,520 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:44:38,521 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:44:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states. [2019-11-07 00:44:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:44:38,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:38,615 INFO L410 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] [2019-11-07 00:44:38,619 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash -895643454, now seen corresponding path program 1 times [2019-11-07 00:44:38,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:38,642 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070056177] [2019-11-07 00:44:38,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:39,414 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070056177] [2019-11-07 00:44:39,415 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:39,415 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:39,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872844773] [2019-11-07 00:44:39,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:39,424 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:39,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:39,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:39,445 INFO L87 Difference]: Start difference. First operand 949 states. Second operand 6 states. [2019-11-07 00:44:39,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:39,718 INFO L93 Difference]: Finished difference Result 1545 states and 2408 transitions. [2019-11-07 00:44:39,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:39,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2019-11-07 00:44:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:39,766 INFO L225 Difference]: With dead ends: 1545 [2019-11-07 00:44:39,766 INFO L226 Difference]: Without dead ends: 776 [2019-11-07 00:44:39,782 INFO L630 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 [2019-11-07 00:44:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2019-11-07 00:44:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2019-11-07 00:44:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-11-07 00:44:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1196 transitions. [2019-11-07 00:44:39,957 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1196 transitions. Word has length 127 [2019-11-07 00:44:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:39,966 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 1196 transitions. [2019-11-07 00:44:39,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1196 transitions. [2019-11-07 00:44:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:44:39,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:39,983 INFO L410 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] [2019-11-07 00:44:39,984 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:39,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1694033836, now seen corresponding path program 1 times [2019-11-07 00:44:39,987 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:39,987 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599931402] [2019-11-07 00:44:39,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:40,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599931402] [2019-11-07 00:44:40,359 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:40,359 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:40,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475069189] [2019-11-07 00:44:40,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:40,361 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:40,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:40,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:40,362 INFO L87 Difference]: Start difference. First operand 776 states and 1196 transitions. Second operand 7 states. [2019-11-07 00:44:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:40,519 INFO L93 Difference]: Finished difference Result 1508 states and 2347 transitions. [2019-11-07 00:44:40,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:40,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2019-11-07 00:44:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:40,527 INFO L225 Difference]: With dead ends: 1508 [2019-11-07 00:44:40,528 INFO L226 Difference]: Without dead ends: 785 [2019-11-07 00:44:40,532 INFO L630 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 [2019-11-07 00:44:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-11-07 00:44:40,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2019-11-07 00:44:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2019-11-07 00:44:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1205 transitions. [2019-11-07 00:44:40,571 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1205 transitions. Word has length 128 [2019-11-07 00:44:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:40,572 INFO L462 AbstractCegarLoop]: Abstraction has 783 states and 1205 transitions. [2019-11-07 00:44:40,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1205 transitions. [2019-11-07 00:44:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 00:44:40,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:40,575 INFO L410 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] [2019-11-07 00:44:40,576 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 54665970, now seen corresponding path program 1 times [2019-11-07 00:44:40,576 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:40,577 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139699147] [2019-11-07 00:44:40,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:40,767 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139699147] [2019-11-07 00:44:40,767 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:40,768 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:40,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959636980] [2019-11-07 00:44:40,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:40,770 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:40,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:40,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:40,771 INFO L87 Difference]: Start difference. First operand 783 states and 1205 transitions. Second operand 4 states. [2019-11-07 00:44:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:40,861 INFO L93 Difference]: Finished difference Result 1511 states and 2348 transitions. [2019-11-07 00:44:40,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:40,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-11-07 00:44:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:40,873 INFO L225 Difference]: With dead ends: 1511 [2019-11-07 00:44:40,873 INFO L226 Difference]: Without dead ends: 765 [2019-11-07 00:44:40,880 INFO L630 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 [2019-11-07 00:44:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-11-07 00:44:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2019-11-07 00:44:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-11-07 00:44:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1172 transitions. [2019-11-07 00:44:40,923 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1172 transitions. Word has length 129 [2019-11-07 00:44:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:40,924 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 1172 transitions. [2019-11-07 00:44:40,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1172 transitions. [2019-11-07 00:44:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 00:44:40,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:40,929 INFO L410 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] [2019-11-07 00:44:40,930 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:40,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1943043330, now seen corresponding path program 1 times [2019-11-07 00:44:40,932 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:40,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445551310] [2019-11-07 00:44:40,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:41,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445551310] [2019-11-07 00:44:41,209 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:41,209 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:41,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467616047] [2019-11-07 00:44:41,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:41,210 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:41,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:41,211 INFO L87 Difference]: Start difference. First operand 765 states and 1172 transitions. Second operand 7 states. [2019-11-07 00:44:41,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:41,312 INFO L93 Difference]: Finished difference Result 1480 states and 2290 transitions. [2019-11-07 00:44:41,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:41,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-11-07 00:44:41,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:41,319 INFO L225 Difference]: With dead ends: 1480 [2019-11-07 00:44:41,319 INFO L226 Difference]: Without dead ends: 759 [2019-11-07 00:44:41,323 INFO L630 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 [2019-11-07 00:44:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-11-07 00:44:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2019-11-07 00:44:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2019-11-07 00:44:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1159 transitions. [2019-11-07 00:44:41,347 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1159 transitions. Word has length 129 [2019-11-07 00:44:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:41,348 INFO L462 AbstractCegarLoop]: Abstraction has 759 states and 1159 transitions. [2019-11-07 00:44:41,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1159 transitions. [2019-11-07 00:44:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:44:41,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:41,350 INFO L410 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] [2019-11-07 00:44:41,351 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash 264736656, now seen corresponding path program 1 times [2019-11-07 00:44:41,351 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:41,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275598766] [2019-11-07 00:44:41,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:41,517 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275598766] [2019-11-07 00:44:41,517 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:41,517 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:41,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806329201] [2019-11-07 00:44:41,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:41,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:41,519 INFO L87 Difference]: Start difference. First operand 759 states and 1159 transitions. Second operand 7 states. [2019-11-07 00:44:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:41,618 INFO L93 Difference]: Finished difference Result 1468 states and 2264 transitions. [2019-11-07 00:44:41,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:41,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2019-11-07 00:44:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:41,633 INFO L225 Difference]: With dead ends: 1468 [2019-11-07 00:44:41,634 INFO L226 Difference]: Without dead ends: 753 [2019-11-07 00:44:41,638 INFO L630 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 [2019-11-07 00:44:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-11-07 00:44:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2019-11-07 00:44:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-11-07 00:44:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1146 transitions. [2019-11-07 00:44:41,733 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1146 transitions. Word has length 130 [2019-11-07 00:44:41,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:41,733 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1146 transitions. [2019-11-07 00:44:41,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1146 transitions. [2019-11-07 00:44:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:44:41,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:41,738 INFO L410 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] [2019-11-07 00:44:41,739 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1030829082, now seen corresponding path program 1 times [2019-11-07 00:44:41,739 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:41,740 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091958268] [2019-11-07 00:44:41,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:41,928 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091958268] [2019-11-07 00:44:41,928 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:41,929 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:41,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708032501] [2019-11-07 00:44:41,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:41,930 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:41,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:41,930 INFO L87 Difference]: Start difference. First operand 753 states and 1146 transitions. Second operand 7 states. [2019-11-07 00:44:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:42,031 INFO L93 Difference]: Finished difference Result 1456 states and 2238 transitions. [2019-11-07 00:44:42,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:42,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 00:44:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:42,038 INFO L225 Difference]: With dead ends: 1456 [2019-11-07 00:44:42,038 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:42,042 INFO L630 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 [2019-11-07 00:44:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1133 transitions. [2019-11-07 00:44:42,067 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1133 transitions. Word has length 131 [2019-11-07 00:44:42,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:42,068 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1133 transitions. [2019-11-07 00:44:42,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1133 transitions. [2019-11-07 00:44:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:44:42,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:42,070 INFO L410 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] [2019-11-07 00:44:42,071 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1840417433, now seen corresponding path program 1 times [2019-11-07 00:44:42,071 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:42,071 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752986728] [2019-11-07 00:44:42,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:42,216 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752986728] [2019-11-07 00:44:42,217 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:42,217 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:42,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577730365] [2019-11-07 00:44:42,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:42,218 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:42,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:42,219 INFO L87 Difference]: Start difference. First operand 747 states and 1133 transitions. Second operand 7 states. [2019-11-07 00:44:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:42,319 INFO L93 Difference]: Finished difference Result 1444 states and 2212 transitions. [2019-11-07 00:44:42,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:42,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 00:44:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:42,325 INFO L225 Difference]: With dead ends: 1444 [2019-11-07 00:44:42,326 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:42,330 INFO L630 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 [2019-11-07 00:44:42,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1132 transitions. [2019-11-07 00:44:42,363 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1132 transitions. Word has length 131 [2019-11-07 00:44:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:42,364 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1132 transitions. [2019-11-07 00:44:42,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1132 transitions. [2019-11-07 00:44:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:44:42,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:42,366 INFO L410 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] [2019-11-07 00:44:42,366 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash 948639604, now seen corresponding path program 1 times [2019-11-07 00:44:42,367 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:42,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815737563] [2019-11-07 00:44:42,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:42,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815737563] [2019-11-07 00:44:42,629 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:42,629 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:42,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712040795] [2019-11-07 00:44:42,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:42,630 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:42,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:42,631 INFO L87 Difference]: Start difference. First operand 747 states and 1132 transitions. Second operand 5 states. [2019-11-07 00:44:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:42,709 INFO L93 Difference]: Finished difference Result 1443 states and 2209 transitions. [2019-11-07 00:44:42,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:42,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-11-07 00:44:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:42,715 INFO L225 Difference]: With dead ends: 1443 [2019-11-07 00:44:42,716 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:42,721 INFO L630 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 [2019-11-07 00:44:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1131 transitions. [2019-11-07 00:44:42,766 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1131 transitions. Word has length 132 [2019-11-07 00:44:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:42,767 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1131 transitions. [2019-11-07 00:44:42,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1131 transitions. [2019-11-07 00:44:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:44:42,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:42,773 INFO L410 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] [2019-11-07 00:44:42,773 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1456106658, now seen corresponding path program 1 times [2019-11-07 00:44:42,774 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:42,774 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152993295] [2019-11-07 00:44:42,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:42,923 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152993295] [2019-11-07 00:44:42,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:42,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:42,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748449255] [2019-11-07 00:44:42,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:42,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:42,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:42,925 INFO L87 Difference]: Start difference. First operand 747 states and 1131 transitions. Second operand 5 states. [2019-11-07 00:44:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:43,008 INFO L93 Difference]: Finished difference Result 1443 states and 2207 transitions. [2019-11-07 00:44:43,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:43,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-11-07 00:44:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:43,015 INFO L225 Difference]: With dead ends: 1443 [2019-11-07 00:44:43,015 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:43,019 INFO L630 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 [2019-11-07 00:44:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1130 transitions. [2019-11-07 00:44:43,042 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1130 transitions. Word has length 133 [2019-11-07 00:44:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:43,043 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1130 transitions. [2019-11-07 00:44:43,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1130 transitions. [2019-11-07 00:44:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:44:43,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:43,045 INFO L410 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] [2019-11-07 00:44:43,046 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:43,046 INFO L82 PathProgramCache]: Analyzing trace with hash 857053327, now seen corresponding path program 1 times [2019-11-07 00:44:43,046 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:43,047 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162407510] [2019-11-07 00:44:43,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:43,180 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162407510] [2019-11-07 00:44:43,180 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:43,180 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:43,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337456133] [2019-11-07 00:44:43,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:43,181 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:43,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:43,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:43,182 INFO L87 Difference]: Start difference. First operand 747 states and 1130 transitions. Second operand 5 states. [2019-11-07 00:44:43,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:43,346 INFO L93 Difference]: Finished difference Result 1443 states and 2205 transitions. [2019-11-07 00:44:43,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:43,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-11-07 00:44:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:43,352 INFO L225 Difference]: With dead ends: 1443 [2019-11-07 00:44:43,353 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:43,365 INFO L630 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 [2019-11-07 00:44:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1129 transitions. [2019-11-07 00:44:43,388 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1129 transitions. Word has length 134 [2019-11-07 00:44:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:43,388 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1129 transitions. [2019-11-07 00:44:43,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:43,389 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1129 transitions. [2019-11-07 00:44:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:44:43,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:43,391 INFO L410 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] [2019-11-07 00:44:43,391 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash -898548391, now seen corresponding path program 1 times [2019-11-07 00:44:43,392 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:43,392 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474433322] [2019-11-07 00:44:43,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:43,541 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474433322] [2019-11-07 00:44:43,541 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:43,541 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:43,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913148380] [2019-11-07 00:44:43,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:43,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:43,543 INFO L87 Difference]: Start difference. First operand 747 states and 1129 transitions. Second operand 5 states. [2019-11-07 00:44:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:43,632 INFO L93 Difference]: Finished difference Result 1443 states and 2203 transitions. [2019-11-07 00:44:43,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:43,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-11-07 00:44:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:43,639 INFO L225 Difference]: With dead ends: 1443 [2019-11-07 00:44:43,639 INFO L226 Difference]: Without dead ends: 747 [2019-11-07 00:44:43,645 INFO L630 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 [2019-11-07 00:44:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-11-07 00:44:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-11-07 00:44:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-11-07 00:44:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1128 transitions. [2019-11-07 00:44:43,679 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1128 transitions. Word has length 135 [2019-11-07 00:44:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:43,679 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1128 transitions. [2019-11-07 00:44:43,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1128 transitions. [2019-11-07 00:44:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 00:44:43,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:43,682 INFO L410 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] [2019-11-07 00:44:43,683 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash 63255978, now seen corresponding path program 1 times [2019-11-07 00:44:43,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:43,683 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934289159] [2019-11-07 00:44:43,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:44:43,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934289159] [2019-11-07 00:44:43,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656367318] [2019-11-07 00:44:43,879 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 [2019-11-07 00:44:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:44,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:44:44,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:44:44,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:44,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:44,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-11-07 00:44:44,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290847995] [2019-11-07 00:44:44,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:44,980 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:44,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:44,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:44:44,981 INFO L87 Difference]: Start difference. First operand 747 states and 1128 transitions. Second operand 3 states. [2019-11-07 00:44:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:45,059 INFO L93 Difference]: Finished difference Result 2129 states and 3266 transitions. [2019-11-07 00:44:45,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:45,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2019-11-07 00:44:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:45,071 INFO L225 Difference]: With dead ends: 2129 [2019-11-07 00:44:45,072 INFO L226 Difference]: Without dead ends: 1437 [2019-11-07 00:44:45,076 INFO L630 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 [2019-11-07 00:44:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2019-11-07 00:44:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1433. [2019-11-07 00:44:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2019-11-07 00:44:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2189 transitions. [2019-11-07 00:44:45,138 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2189 transitions. Word has length 136 [2019-11-07 00:44:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:45,139 INFO L462 AbstractCegarLoop]: Abstraction has 1433 states and 2189 transitions. [2019-11-07 00:44:45,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2189 transitions. [2019-11-07 00:44:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-07 00:44:45,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:45,142 INFO L410 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] [2019-11-07 00:44:45,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:45,352 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:45,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:45,353 INFO L82 PathProgramCache]: Analyzing trace with hash -983256524, now seen corresponding path program 1 times [2019-11-07 00:44:45,353 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:45,353 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236420281] [2019-11-07 00:44:45,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:44:45,548 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236420281] [2019-11-07 00:44:45,548 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264887717] [2019-11-07 00:44:45,549 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 [2019-11-07 00:44:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:46,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:46,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:44:46,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:46,589 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:46,589 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-11-07 00:44:46,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247544434] [2019-11-07 00:44:46,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:46,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:46,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:44:46,591 INFO L87 Difference]: Start difference. First operand 1433 states and 2189 transitions. Second operand 3 states. [2019-11-07 00:44:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:46,705 INFO L93 Difference]: Finished difference Result 4037 states and 6269 transitions. [2019-11-07 00:44:46,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:46,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-11-07 00:44:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:46,727 INFO L225 Difference]: With dead ends: 4037 [2019-11-07 00:44:46,727 INFO L226 Difference]: Without dead ends: 2683 [2019-11-07 00:44:46,735 INFO L630 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 [2019-11-07 00:44:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2019-11-07 00:44:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2661. [2019-11-07 00:44:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2661 states. [2019-11-07 00:44:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4091 transitions. [2019-11-07 00:44:46,841 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4091 transitions. Word has length 137 [2019-11-07 00:44:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:46,842 INFO L462 AbstractCegarLoop]: Abstraction has 2661 states and 4091 transitions. [2019-11-07 00:44:46,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4091 transitions. [2019-11-07 00:44:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:44:46,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:46,845 INFO L410 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] [2019-11-07 00:44:47,053 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:47,054 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:47,054 INFO L82 PathProgramCache]: Analyzing trace with hash -708213721, now seen corresponding path program 1 times [2019-11-07 00:44:47,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:47,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127162945] [2019-11-07 00:44:47,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:47,230 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127162945] [2019-11-07 00:44:47,231 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:47,231 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875669238] [2019-11-07 00:44:47,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:47,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:47,233 INFO L87 Difference]: Start difference. First operand 2661 states and 4091 transitions. Second operand 7 states. [2019-11-07 00:44:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:51,288 INFO L93 Difference]: Finished difference Result 7813 states and 12403 transitions. [2019-11-07 00:44:51,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:51,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-11-07 00:44:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:51,328 INFO L225 Difference]: With dead ends: 7813 [2019-11-07 00:44:51,329 INFO L226 Difference]: Without dead ends: 5231 [2019-11-07 00:44:51,345 INFO L630 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 [2019-11-07 00:44:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2019-11-07 00:44:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5103. [2019-11-07 00:44:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5103 states. [2019-11-07 00:44:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 8012 transitions. [2019-11-07 00:44:51,557 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 8012 transitions. Word has length 141 [2019-11-07 00:44:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:51,557 INFO L462 AbstractCegarLoop]: Abstraction has 5103 states and 8012 transitions. [2019-11-07 00:44:51,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 8012 transitions. [2019-11-07 00:44:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 00:44:51,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:51,561 INFO L410 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] [2019-11-07 00:44:51,562 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:51,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1740928992, now seen corresponding path program 1 times [2019-11-07 00:44:51,563 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:51,563 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359504221] [2019-11-07 00:44:51,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:44:51,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359504221] [2019-11-07 00:44:51,802 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336596311] [2019-11-07 00:44:51,802 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 [2019-11-07 00:44:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:52,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:52,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:44:52,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:52,736 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:52,737 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-11-07 00:44:52,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592353748] [2019-11-07 00:44:52,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:52,738 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:52,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:52,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:44:52,739 INFO L87 Difference]: Start difference. First operand 5103 states and 8012 transitions. Second operand 3 states. [2019-11-07 00:44:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:53,097 INFO L93 Difference]: Finished difference Result 12593 states and 20013 transitions. [2019-11-07 00:44:53,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:53,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-11-07 00:44:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:53,161 INFO L225 Difference]: With dead ends: 12593 [2019-11-07 00:44:53,161 INFO L226 Difference]: Without dead ends: 7569 [2019-11-07 00:44:53,194 INFO L630 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 [2019-11-07 00:44:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7569 states. [2019-11-07 00:44:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7569 to 7375. [2019-11-07 00:44:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2019-11-07 00:44:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 11600 transitions. [2019-11-07 00:44:53,557 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 11600 transitions. Word has length 138 [2019-11-07 00:44:53,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:53,558 INFO L462 AbstractCegarLoop]: Abstraction has 7375 states and 11600 transitions. [2019-11-07 00:44:53,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 11600 transitions. [2019-11-07 00:44:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:44:53,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:53,562 INFO L410 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] [2019-11-07 00:44:53,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:53,770 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1455513363, now seen corresponding path program 1 times [2019-11-07 00:44:53,771 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:53,771 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797123610] [2019-11-07 00:44:53,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:44:53,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797123610] [2019-11-07 00:44:53,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574139954] [2019-11-07 00:44:53,958 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 [2019-11-07 00:44:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:54,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:44:54,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:44:54,749 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:54,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:44:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:44:55,061 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:55,061 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [10] total 19 [2019-11-07 00:44:55,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696912100] [2019-11-07 00:44:55,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:44:55,063 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:44:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:44:55,063 INFO L87 Difference]: Start difference. First operand 7375 states and 11600 transitions. Second operand 11 states. [2019-11-07 00:45:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:00,513 INFO L93 Difference]: Finished difference Result 33339 states and 53967 transitions. [2019-11-07 00:45:00,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:45:00,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2019-11-07 00:45:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:00,719 INFO L225 Difference]: With dead ends: 33339 [2019-11-07 00:45:00,719 INFO L226 Difference]: Without dead ends: 26043 [2019-11-07 00:45:00,768 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:45:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26043 states. [2019-11-07 00:45:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26043 to 25815. [2019-11-07 00:45:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25815 states. [2019-11-07 00:45:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25815 states to 25815 states and 40631 transitions. [2019-11-07 00:45:01,920 INFO L78 Accepts]: Start accepts. Automaton has 25815 states and 40631 transitions. Word has length 141 [2019-11-07 00:45:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:01,921 INFO L462 AbstractCegarLoop]: Abstraction has 25815 states and 40631 transitions. [2019-11-07 00:45:01,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:45:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 25815 states and 40631 transitions. [2019-11-07 00:45:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:45:01,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:01,925 INFO L410 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] [2019-11-07 00:45:02,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:45:02,134 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1904993576, now seen corresponding path program 1 times [2019-11-07 00:45:02,135 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:02,135 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589687755] [2019-11-07 00:45:02,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:45:02,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589687755] [2019-11-07 00:45:02,329 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:02,330 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:02,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280193829] [2019-11-07 00:45:02,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:02,331 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:02,331 INFO L87 Difference]: Start difference. First operand 25815 states and 40631 transitions. Second operand 4 states. [2019-11-07 00:45:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:04,001 INFO L93 Difference]: Finished difference Result 51587 states and 82095 transitions. [2019-11-07 00:45:04,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:45:04,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-11-07 00:45:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:04,151 INFO L225 Difference]: With dead ends: 51587 [2019-11-07 00:45:04,151 INFO L226 Difference]: Without dead ends: 25851 [2019-11-07 00:45:04,229 INFO L630 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 [2019-11-07 00:45:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25851 states. [2019-11-07 00:45:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25851 to 25779. [2019-11-07 00:45:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25779 states. [2019-11-07 00:45:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25779 states to 25779 states and 40429 transitions. [2019-11-07 00:45:05,270 INFO L78 Accepts]: Start accepts. Automaton has 25779 states and 40429 transitions. Word has length 141 [2019-11-07 00:45:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:05,271 INFO L462 AbstractCegarLoop]: Abstraction has 25779 states and 40429 transitions. [2019-11-07 00:45:05,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 25779 states and 40429 transitions. [2019-11-07 00:45:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:45:05,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:05,275 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:05,275 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:05,276 INFO L82 PathProgramCache]: Analyzing trace with hash 124810956, now seen corresponding path program 1 times [2019-11-07 00:45:05,276 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:05,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715319536] [2019-11-07 00:45:05,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 00:45:05,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715319536] [2019-11-07 00:45:05,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119748893] [2019-11-07 00:45:05,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true