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_spec1_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:47,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:47,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:47,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:47,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:47,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:47,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:47,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:47,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:47,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:47,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:47,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:47,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:47,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:47,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:47,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:47,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:47,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:47,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:47,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:47,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:47,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:47,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:47,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:47,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:47,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:47,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:47,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:47,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:47,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:47,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:47,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:47,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:47,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:47,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:47,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:47,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:47,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:47,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:47,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:47,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:47,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:47,204 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:47,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:47,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:47,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:47,206 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:47,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:47,207 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:47,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:47,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:47,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:47,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:47,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:47,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:47,209 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:47,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:47,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:47,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:47,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:47,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:47,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:47,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:47,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:47,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:47,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:47,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:47,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:47,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:47,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:47,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:08:47,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:47,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:47,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:47,492 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:47,492 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:47,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-10-15 01:08:47,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce5f3886/07d5cba9bbcc48e381e597f64204ac60/FLAGd82d82d78 [2019-10-15 01:08:48,184 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:48,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-10-15 01:08:48,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce5f3886/07d5cba9bbcc48e381e597f64204ac60/FLAGd82d82d78 [2019-10-15 01:08:48,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce5f3886/07d5cba9bbcc48e381e597f64204ac60 [2019-10-15 01:08:48,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:48,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:48,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:48,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:48,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:48,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:48" (1/1) ... [2019-10-15 01:08:48,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7f630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:48, skipping insertion in model container [2019-10-15 01:08:48,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:48" (1/1) ... [2019-10-15 01:08:48,437 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:48,525 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:49,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:49,206 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:49,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:49,417 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:49,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49 WrapperNode [2019-10-15 01:08:49,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:49,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:49,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:49,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:49,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... [2019-10-15 01:08:49,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:49,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:49,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:49,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:49,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 01:08:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 01:08:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 01:08:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 01:08:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:08:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:08:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:08:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:49,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 01:08:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 01:08:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 01:08:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:08:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:51,969 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:51,970 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:51,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:51 BoogieIcfgContainer [2019-10-15 01:08:51,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:51,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:51,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:51,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:51,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:48" (1/3) ... [2019-10-15 01:08:51,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177da718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:51, skipping insertion in model container [2019-10-15 01:08:51,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:49" (2/3) ... [2019-10-15 01:08:51,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177da718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:51, skipping insertion in model container [2019-10-15 01:08:51,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:51" (3/3) ... [2019-10-15 01:08:51,980 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2019-10-15 01:08:51,989 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:52,000 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:52,011 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:52,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:52,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:52,050 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:52,050 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:52,050 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:52,051 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:52,051 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:52,051 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states. [2019-10-15 01:08:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:52,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:52,125 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:52,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash 253029278, now seen corresponding path program 1 times [2019-10-15 01:08:52,143 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:52,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146644171] [2019-10-15 01:08:52,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:52,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:52,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:52,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146644171] [2019-10-15 01:08:52,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126673087] [2019-10-15 01:08:52,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:53,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:08:53,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:53,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:53,933 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:53,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 4 [2019-10-15 01:08:53,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285550914] [2019-10-15 01:08:53,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:08:53,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:08:53,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:53,960 INFO L87 Difference]: Start difference. First operand 802 states. Second operand 2 states. [2019-10-15 01:08:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:54,059 INFO L93 Difference]: Finished difference Result 685 states and 1081 transitions. [2019-10-15 01:08:54,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:08:54,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-15 01:08:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:54,093 INFO L225 Difference]: With dead ends: 685 [2019-10-15 01:08:54,093 INFO L226 Difference]: Without dead ends: 648 [2019-10-15 01:08:54,097 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-15 01:08:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-15 01:08:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-15 01:08:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1026 transitions. [2019-10-15 01:08:54,242 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1026 transitions. Word has length 164 [2019-10-15 01:08:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:54,245 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1026 transitions. [2019-10-15 01:08:54,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:08:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1026 transitions. [2019-10-15 01:08:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:08:54,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:54,261 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:54,468 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:54,468 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash 398552141, now seen corresponding path program 1 times [2019-10-15 01:08:54,470 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:54,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139665237] [2019-10-15 01:08:54,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:54,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:54,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:54,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139665237] [2019-10-15 01:08:54,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103899669] [2019-10-15 01:08:54,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:55,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:55,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:08:55,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:55,777 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:55,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-15 01:08:55,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43432762] [2019-10-15 01:08:55,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:55,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:55,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:55,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:55,781 INFO L87 Difference]: Start difference. First operand 648 states and 1026 transitions. Second operand 3 states. [2019-10-15 01:08:55,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:55,935 INFO L93 Difference]: Finished difference Result 1721 states and 2761 transitions. [2019-10-15 01:08:55,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:55,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-15 01:08:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:55,946 INFO L225 Difference]: With dead ends: 1721 [2019-10-15 01:08:55,946 INFO L226 Difference]: Without dead ends: 1182 [2019-10-15 01:08:55,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2019-10-15 01:08:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1160. [2019-10-15 01:08:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-10-15 01:08:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1857 transitions. [2019-10-15 01:08:56,041 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1857 transitions. Word has length 166 [2019-10-15 01:08:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:56,042 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1857 transitions. [2019-10-15 01:08:56,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1857 transitions. [2019-10-15 01:08:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:08:56,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:56,053 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:56,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:56,267 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:56,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1100152015, now seen corresponding path program 1 times [2019-10-15 01:08:56,268 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:56,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466397571] [2019-10-15 01:08:56,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:56,268 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:56,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:56,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466397571] [2019-10-15 01:08:56,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788326092] [2019-10-15 01:08:56,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:57,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:57,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:57,171 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:57,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:57,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:57,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509278549] [2019-10-15 01:08:57,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:57,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:57,463 INFO L87 Difference]: Start difference. First operand 1160 states and 1857 transitions. Second operand 4 states. [2019-10-15 01:08:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:57,561 INFO L93 Difference]: Finished difference Result 2292 states and 3687 transitions. [2019-10-15 01:08:57,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:57,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-15 01:08:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:57,571 INFO L225 Difference]: With dead ends: 2292 [2019-10-15 01:08:57,571 INFO L226 Difference]: Without dead ends: 1160 [2019-10-15 01:08:57,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-10-15 01:08:57,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2019-10-15 01:08:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-10-15 01:08:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1856 transitions. [2019-10-15 01:08:57,637 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1856 transitions. Word has length 166 [2019-10-15 01:08:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:57,638 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1856 transitions. [2019-10-15 01:08:57,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1856 transitions. [2019-10-15 01:08:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:08:57,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:57,645 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:57,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:57,862 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1455253617, now seen corresponding path program 1 times [2019-10-15 01:08:57,864 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:57,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186327721] [2019-10-15 01:08:57,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:57,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:57,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:58,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186327721] [2019-10-15 01:08:58,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515208578] [2019-10-15 01:08:58,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:58,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:58,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:58,904 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:59,241 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:59,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:59,242 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502273763] [2019-10-15 01:08:59,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:59,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:59,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:59,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:59,243 INFO L87 Difference]: Start difference. First operand 1160 states and 1856 transitions. Second operand 4 states. [2019-10-15 01:08:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:59,331 INFO L93 Difference]: Finished difference Result 2292 states and 3685 transitions. [2019-10-15 01:08:59,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:59,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-15 01:08:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:59,340 INFO L225 Difference]: With dead ends: 2292 [2019-10-15 01:08:59,340 INFO L226 Difference]: Without dead ends: 1160 [2019-10-15 01:08:59,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-10-15 01:08:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2019-10-15 01:08:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-10-15 01:08:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1855 transitions. [2019-10-15 01:08:59,390 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1855 transitions. Word has length 168 [2019-10-15 01:08:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:59,391 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1855 transitions. [2019-10-15 01:08:59,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1855 transitions. [2019-10-15 01:08:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:08:59,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:59,397 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:59,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:59,605 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:59,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:59,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1896519639, now seen corresponding path program 1 times [2019-10-15 01:08:59,606 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:59,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323523419] [2019-10-15 01:08:59,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:59,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:59,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:59,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323523419] [2019-10-15 01:08:59,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444702467] [2019-10-15 01:08:59,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:00,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:00,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:09:00,419 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:00,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:00,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:09:00,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524278164] [2019-10-15 01:09:00,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:00,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:00,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:00,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:00,752 INFO L87 Difference]: Start difference. First operand 1160 states and 1855 transitions. Second operand 4 states. [2019-10-15 01:09:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:00,847 INFO L93 Difference]: Finished difference Result 2299 states and 3692 transitions. [2019-10-15 01:09:00,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:00,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-15 01:09:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:00,856 INFO L225 Difference]: With dead ends: 2299 [2019-10-15 01:09:00,857 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:09:00,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:09:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:09:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-10-15 01:09:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-10-15 01:09:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1867 transitions. [2019-10-15 01:09:00,904 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1867 transitions. Word has length 170 [2019-10-15 01:09:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:00,905 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1867 transitions. [2019-10-15 01:09:00,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1867 transitions. [2019-10-15 01:09:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:09:00,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:00,910 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:01,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:01,118 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:01,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1839187851, now seen corresponding path program 1 times [2019-10-15 01:09:01,119 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:01,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061888306] [2019-10-15 01:09:01,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:01,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:01,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:01,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061888306] [2019-10-15 01:09:01,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895598425] [2019-10-15 01:09:01,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:01,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:01,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:09:01,866 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:02,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:02,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:09:02,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501815736] [2019-10-15 01:09:02,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:02,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:02,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:02,298 INFO L87 Difference]: Start difference. First operand 1169 states and 1867 transitions. Second operand 4 states. [2019-10-15 01:09:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:02,416 INFO L93 Difference]: Finished difference Result 2301 states and 3693 transitions. [2019-10-15 01:09:02,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:02,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-15 01:09:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:02,429 INFO L225 Difference]: With dead ends: 2301 [2019-10-15 01:09:02,429 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:09:02,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:09:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:09:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-10-15 01:09:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-10-15 01:09:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1866 transitions. [2019-10-15 01:09:02,499 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1866 transitions. Word has length 171 [2019-10-15 01:09:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:02,499 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1866 transitions. [2019-10-15 01:09:02,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1866 transitions. [2019-10-15 01:09:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:09:02,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:02,505 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:02,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:02,714 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:02,714 INFO L82 PathProgramCache]: Analyzing trace with hash 201198171, now seen corresponding path program 1 times [2019-10-15 01:09:02,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:02,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353082604] [2019-10-15 01:09:02,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:02,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:02,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:02,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353082604] [2019-10-15 01:09:02,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407323651] [2019-10-15 01:09:02,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:03,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:03,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:09:03,510 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:03,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:03,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:09:03,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354462808] [2019-10-15 01:09:03,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:03,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:09:03,914 INFO L87 Difference]: Start difference. First operand 1169 states and 1866 transitions. Second operand 4 states. [2019-10-15 01:09:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:04,030 INFO L93 Difference]: Finished difference Result 2301 states and 3692 transitions. [2019-10-15 01:09:04,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:04,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-15 01:09:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:04,042 INFO L225 Difference]: With dead ends: 2301 [2019-10-15 01:09:04,042 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:09:04,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:09:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-10-15 01:09:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-10-15 01:09:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1865 transitions. [2019-10-15 01:09:04,110 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1865 transitions. Word has length 172 [2019-10-15 01:09:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:04,111 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 1865 transitions. [2019-10-15 01:09:04,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1865 transitions. [2019-10-15 01:09:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:09:04,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:04,120 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:04,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:04,331 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1102421391, now seen corresponding path program 1 times [2019-10-15 01:09:04,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:04,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430722968] [2019-10-15 01:09:04,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:04,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:04,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:04,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430722968] [2019-10-15 01:09:04,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767839191] [2019-10-15 01:09:04,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:05,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:09:05,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:05,707 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:06,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:06,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 16 [2019-10-15 01:09:06,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106870887] [2019-10-15 01:09:06,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:09:06,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:09:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:09:06,112 INFO L87 Difference]: Start difference. First operand 1169 states and 1865 transitions. Second operand 7 states. [2019-10-15 01:09:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:06,709 INFO L93 Difference]: Finished difference Result 2308 states and 3701 transitions. [2019-10-15 01:09:06,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:09:06,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-10-15 01:09:06,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:06,718 INFO L225 Difference]: With dead ends: 2308 [2019-10-15 01:09:06,718 INFO L226 Difference]: Without dead ends: 1180 [2019-10-15 01:09:06,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 338 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:09:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2019-10-15 01:09:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1176. [2019-10-15 01:09:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2019-10-15 01:09:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1875 transitions. [2019-10-15 01:09:06,779 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1875 transitions. Word has length 173 [2019-10-15 01:09:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:06,779 INFO L462 AbstractCegarLoop]: Abstraction has 1176 states and 1875 transitions. [2019-10-15 01:09:06,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:09:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1875 transitions. [2019-10-15 01:09:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:09:06,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:06,786 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:06,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:06,994 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:06,994 INFO L82 PathProgramCache]: Analyzing trace with hash 849321655, now seen corresponding path program 1 times [2019-10-15 01:09:06,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:06,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808266158] [2019-10-15 01:09:06,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:06,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:06,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:09:07,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808266158] [2019-10-15 01:09:07,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639974476] [2019-10-15 01:09:07,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:07,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:09:07,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:07,832 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:08,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:08,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 7] total 10 [2019-10-15 01:09:08,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215048734] [2019-10-15 01:09:08,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:09:08,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:09:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:09:08,189 INFO L87 Difference]: Start difference. First operand 1176 states and 1875 transitions. Second operand 7 states. [2019-10-15 01:09:08,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:08,319 INFO L93 Difference]: Finished difference Result 2314 states and 3710 transitions. [2019-10-15 01:09:08,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:09:08,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-15 01:09:08,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:08,327 INFO L225 Difference]: With dead ends: 2314 [2019-10-15 01:09:08,328 INFO L226 Difference]: Without dead ends: 1183 [2019-10-15 01:09:08,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:09:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-15 01:09:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1179. [2019-10-15 01:09:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2019-10-15 01:09:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1880 transitions. [2019-10-15 01:09:08,375 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1880 transitions. Word has length 174 [2019-10-15 01:09:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:08,377 INFO L462 AbstractCegarLoop]: Abstraction has 1179 states and 1880 transitions. [2019-10-15 01:09:08,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:09:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1880 transitions. [2019-10-15 01:09:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:09:08,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:08,384 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:08,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:08,593 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1137245328, now seen corresponding path program 1 times [2019-10-15 01:09:08,594 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:08,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519887049] [2019-10-15 01:09:08,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:08,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:08,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:08,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519887049] [2019-10-15 01:09:08,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459427253] [2019-10-15 01:09:08,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:09,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:09,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:09,529 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:09,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:09,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:09:09,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830220919] [2019-10-15 01:09:09,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:09,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:09,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:09,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:09,854 INFO L87 Difference]: Start difference. First operand 1179 states and 1880 transitions. Second operand 4 states. [2019-10-15 01:09:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:10,080 INFO L93 Difference]: Finished difference Result 2319 states and 3720 transitions. [2019-10-15 01:09:10,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:10,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-15 01:09:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:10,093 INFO L225 Difference]: With dead ends: 2319 [2019-10-15 01:09:10,093 INFO L226 Difference]: Without dead ends: 1179 [2019-10-15 01:09:10,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:09:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2019-10-15 01:09:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2019-10-15 01:09:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2019-10-15 01:09:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1875 transitions. [2019-10-15 01:09:10,176 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1875 transitions. Word has length 173 [2019-10-15 01:09:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:10,177 INFO L462 AbstractCegarLoop]: Abstraction has 1179 states and 1875 transitions. [2019-10-15 01:09:10,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1875 transitions. [2019-10-15 01:09:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:09:10,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:10,187 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:10,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:10,408 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash 461916052, now seen corresponding path program 1 times [2019-10-15 01:09:10,409 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:10,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351063780] [2019-10-15 01:09:10,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:10,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:10,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:09:10,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351063780] [2019-10-15 01:09:10,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540981832] [2019-10-15 01:09:10,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:11,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:11,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:11,511 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:11,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:11,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:09:11,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020992462] [2019-10-15 01:09:11,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:11,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:11,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:11,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:11,802 INFO L87 Difference]: Start difference. First operand 1179 states and 1875 transitions. Second operand 4 states. [2019-10-15 01:09:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:11,945 INFO L93 Difference]: Finished difference Result 2319 states and 3710 transitions. [2019-10-15 01:09:11,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:11,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-15 01:09:11,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:11,954 INFO L225 Difference]: With dead ends: 2319 [2019-10-15 01:09:11,954 INFO L226 Difference]: Without dead ends: 1179 [2019-10-15 01:09:11,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:09:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2019-10-15 01:09:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2019-10-15 01:09:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2019-10-15 01:09:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1870 transitions. [2019-10-15 01:09:11,998 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1870 transitions. Word has length 175 [2019-10-15 01:09:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:11,999 INFO L462 AbstractCegarLoop]: Abstraction has 1179 states and 1870 transitions. [2019-10-15 01:09:11,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1870 transitions. [2019-10-15 01:09:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:09:12,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:12,004 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:09:12,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:12,213 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:12,213 INFO L82 PathProgramCache]: Analyzing trace with hash -414729210, now seen corresponding path program 1 times [2019-10-15 01:09:12,213 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:12,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532261989] [2019-10-15 01:09:12,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:12,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:12,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:09:12,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532261989] [2019-10-15 01:09:12,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603544244] [2019-10-15 01:09:12,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:13,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:13,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:13,189 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:13,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:13,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:09:13,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12803503] [2019-10-15 01:09:13,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:13,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:13,489 INFO L87 Difference]: Start difference. First operand 1179 states and 1870 transitions. Second operand 4 states. [2019-10-15 01:09:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:13,750 INFO L93 Difference]: Finished difference Result 2358 states and 3761 transitions. [2019-10-15 01:09:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:13,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-15 01:09:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:13,760 INFO L225 Difference]: With dead ends: 2358 [2019-10-15 01:09:13,760 INFO L226 Difference]: Without dead ends: 1224 [2019-10-15 01:09:13,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:09:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2019-10-15 01:09:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1218. [2019-10-15 01:09:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-10-15 01:09:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1932 transitions. [2019-10-15 01:09:13,808 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1932 transitions. Word has length 177 [2019-10-15 01:09:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:13,808 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1932 transitions. [2019-10-15 01:09:13,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1932 transitions. [2019-10-15 01:09:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:09:13,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:13,814 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:14,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:14,023 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2055869186, now seen corresponding path program 1 times [2019-10-15 01:09:14,024 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:14,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219428543] [2019-10-15 01:09:14,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:14,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:14,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:09:14,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219428543] [2019-10-15 01:09:14,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836398731] [2019-10-15 01:09:14,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:14,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:14,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:15,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:15,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:15,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2019-10-15 01:09:15,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277066477] [2019-10-15 01:09:15,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:15,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:15,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:09:15,274 INFO L87 Difference]: Start difference. First operand 1218 states and 1932 transitions. Second operand 4 states. [2019-10-15 01:09:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:15,477 INFO L93 Difference]: Finished difference Result 2352 states and 3751 transitions. [2019-10-15 01:09:15,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:15,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2019-10-15 01:09:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:15,485 INFO L225 Difference]: With dead ends: 2352 [2019-10-15 01:09:15,485 INFO L226 Difference]: Without dead ends: 1218 [2019-10-15 01:09:15,492 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:09:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-10-15 01:09:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2019-10-15 01:09:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-10-15 01:09:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1927 transitions. [2019-10-15 01:09:15,537 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1927 transitions. Word has length 179 [2019-10-15 01:09:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:15,538 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1927 transitions. [2019-10-15 01:09:15,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1927 transitions. [2019-10-15 01:09:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:09:15,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:15,545 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:15,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:15,754 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:15,755 INFO L82 PathProgramCache]: Analyzing trace with hash -642615282, now seen corresponding path program 1 times [2019-10-15 01:09:15,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:15,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465291236] [2019-10-15 01:09:15,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:15,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:15,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:15,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465291236] [2019-10-15 01:09:15,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082828122] [2019-10-15 01:09:15,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:16,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:09:16,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:16,804 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:17,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:09:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:17,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:17,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 16 [2019-10-15 01:09:17,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357274425] [2019-10-15 01:09:17,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:09:17,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:09:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:09:17,284 INFO L87 Difference]: Start difference. First operand 1218 states and 1927 transitions. Second operand 9 states. [2019-10-15 01:09:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:17,520 INFO L93 Difference]: Finished difference Result 2359 states and 3757 transitions. [2019-10-15 01:09:17,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:09:17,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2019-10-15 01:09:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:17,528 INFO L225 Difference]: With dead ends: 2359 [2019-10-15 01:09:17,528 INFO L226 Difference]: Without dead ends: 1229 [2019-10-15 01:09:17,532 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 341 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:09:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-10-15 01:09:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1220. [2019-10-15 01:09:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-15 01:09:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1931 transitions. [2019-10-15 01:09:17,572 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1931 transitions. Word has length 178 [2019-10-15 01:09:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:17,572 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1931 transitions. [2019-10-15 01:09:17,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:09:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1931 transitions. [2019-10-15 01:09:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:09:17,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:17,578 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:17,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:17,786 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash 803698401, now seen corresponding path program 1 times [2019-10-15 01:09:17,786 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:17,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525255877] [2019-10-15 01:09:17,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:17,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:17,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:09:17,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525255877] [2019-10-15 01:09:17,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044129848] [2019-10-15 01:09:17,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:18,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:18,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:18,714 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:19,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:19,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:09:19,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016883598] [2019-10-15 01:09:19,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:19,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:19,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:19,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:09:19,089 INFO L87 Difference]: Start difference. First operand 1220 states and 1931 transitions. Second operand 4 states. [2019-10-15 01:09:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:19,262 INFO L93 Difference]: Finished difference Result 2356 states and 3753 transitions. [2019-10-15 01:09:19,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:19,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2019-10-15 01:09:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:19,270 INFO L225 Difference]: With dead ends: 2356 [2019-10-15 01:09:19,270 INFO L226 Difference]: Without dead ends: 1220 [2019-10-15 01:09:19,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2019-10-15 01:09:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2019-10-15 01:09:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-15 01:09:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1926 transitions. [2019-10-15 01:09:19,317 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1926 transitions. Word has length 179 [2019-10-15 01:09:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:19,317 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1926 transitions. [2019-10-15 01:09:19,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1926 transitions. [2019-10-15 01:09:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:09:19,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:19,322 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:19,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:19,530 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:19,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1717618327, now seen corresponding path program 1 times [2019-10-15 01:09:19,531 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:19,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714642969] [2019-10-15 01:09:19,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:19,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:19,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:09:19,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714642969] [2019-10-15 01:09:19,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840023001] [2019-10-15 01:09:19,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:20,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:09:20,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:20,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:20,855 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:09:20,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:09:20,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739329968] [2019-10-15 01:09:20,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:09:20,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:20,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:09:20,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:09:20,857 INFO L87 Difference]: Start difference. First operand 1220 states and 1926 transitions. Second operand 11 states. [2019-10-15 01:09:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:20,981 INFO L93 Difference]: Finished difference Result 2293 states and 3649 transitions. [2019-10-15 01:09:20,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:09:20,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2019-10-15 01:09:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:20,993 INFO L225 Difference]: With dead ends: 2293 [2019-10-15 01:09:20,994 INFO L226 Difference]: Without dead ends: 1237 [2019-10-15 01:09:20,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2019-10-15 01:09:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1227. [2019-10-15 01:09:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2019-10-15 01:09:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1936 transitions. [2019-10-15 01:09:21,040 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1936 transitions. Word has length 180 [2019-10-15 01:09:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:21,040 INFO L462 AbstractCegarLoop]: Abstraction has 1227 states and 1936 transitions. [2019-10-15 01:09:21,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:09:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1936 transitions. [2019-10-15 01:09:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:09:21,045 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:21,045 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]