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_spec13_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:07:31,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:07:31,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:07:31,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:07:31,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:07:31,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:07:31,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:07:31,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:07:31,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:07:31,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:07:31,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:07:31,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:07:31,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:07:31,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:07:31,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:07:31,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:07:31,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:07:31,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:07:31,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:07:31,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:07:31,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:07:31,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:07:31,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:07:31,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:07:31,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:07:31,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:07:31,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:07:31,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:07:31,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:07:31,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:07:31,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:07:31,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:07:31,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:07:31,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:07:31,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:07:31,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:07:31,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:07:31,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:07:31,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:07:31,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:07:31,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:07:31,862 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 01:07:31,877 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:07:31,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:07:31,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:07:31,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:07:31,878 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:07:31,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:07:31,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:07:31,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:07:31,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:07:31,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:07:31,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:07:31,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:07:31,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:07:31,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:07:31,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:07:31,881 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:07:31,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:07:31,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:07:31,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:07:31,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:07:31,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:07:31,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:07:31,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:07:31,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:07:31,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:07:31,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:07:31,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:07:31,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:07:31,883 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 01:07:32,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:07:32,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:07:32,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:07:32,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:07:32,240 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:07:32,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-15 01:07:32,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c8bcfc9/f99a98b6821345ffaa5eb762b4df5911/FLAGef581f375 [2019-10-15 01:07:32,847 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:07:32,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product23.cil.c [2019-10-15 01:07:32,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c8bcfc9/f99a98b6821345ffaa5eb762b4df5911/FLAGef581f375 [2019-10-15 01:07:33,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c8bcfc9/f99a98b6821345ffaa5eb762b4df5911 [2019-10-15 01:07:33,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:07:33,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:07:33,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:33,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:07:33,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:07:33,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:33" (1/1) ... [2019-10-15 01:07:33,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f84d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:33, skipping insertion in model container [2019-10-15 01:07:33,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:33" (1/1) ... [2019-10-15 01:07:33,149 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:07:33,238 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:07:34,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:34,016 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:07:34,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:34,236 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:07:34,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34 WrapperNode [2019-10-15 01:07:34,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:34,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:07:34,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:07:34,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:07:34,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:07:34,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:07:34,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:07:34,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:07:34,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (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 01:07:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:07:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:07:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:07:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:07:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:07:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:07:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:07:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:07:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:07:34,625 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:07:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:07:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:07:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:07:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:07:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:07:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:07:34,631 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:07:34,631 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:07:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:07:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:07:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:07:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:07:34,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:07:34,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:34,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:07:34,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:07:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:07:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:07:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:34,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:07:34,635 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:07:34,635 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:07:34,636 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:07:34,636 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:07:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:07:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:07:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:07:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:07:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:07:34,638 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:07:34,638 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:07:34,638 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:07:34,638 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:07:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:07:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:07:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:07:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:07:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:07:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:07:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:07:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:07:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:07:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:07:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:07:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:07:34,646 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:07:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:07:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:07:34,647 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:07:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:07:34,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:07:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:07:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:07:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:07:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:07:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:07:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:07:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:07:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:07:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:07:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:07:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:07:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:07:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:07:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:07:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:07:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:07:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:07:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:07:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:07:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:07:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:07:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:07:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:07:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:07:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:07:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:07:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:07:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:07:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:07:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:07:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:07:34,660 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:07:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:07:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:07:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:07:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:07:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:07:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:07:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:07:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:07:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:07:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:07:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:07:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:07:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:07:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:07:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:34,668 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:07:34,668 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:07:34,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:07:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:07:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:07:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:07:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:07:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:07:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:07:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:07:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:07:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:07:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:07:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:07:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:07:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:07:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:07:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:07:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:07:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:07:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:07:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:07:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:07:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:07:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:07:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:07:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:07:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:07:37,205 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:07:37,206 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:07:37,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:37 BoogieIcfgContainer [2019-10-15 01:07:37,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:07:37,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:07:37,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:07:37,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:07:37,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:07:33" (1/3) ... [2019-10-15 01:07:37,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56943c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:37, skipping insertion in model container [2019-10-15 01:07:37,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34" (2/3) ... [2019-10-15 01:07:37,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56943c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:37, skipping insertion in model container [2019-10-15 01:07:37,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:37" (3/3) ... [2019-10-15 01:07:37,217 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2019-10-15 01:07:37,227 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:07:37,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:07:37,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:07:37,278 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:07:37,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:07:37,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:07:37,279 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:07:37,279 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:07:37,279 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:07:37,279 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:07:37,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:07:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states. [2019-10-15 01:07:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:07:37,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:37,350 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:37,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1416283797, now seen corresponding path program 1 times [2019-10-15 01:07:37,367 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:37,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633577593] [2019-10-15 01:07:37,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:37,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:37,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:38,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633577593] [2019-10-15 01:07:38,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033535185] [2019-10-15 01:07:38,094 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 01:07:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:38,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:07:38,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:38,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:39,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:39,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 2] total 7 [2019-10-15 01:07:39,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280755631] [2019-10-15 01:07:39,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:07:39,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:07:39,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:39,118 INFO L87 Difference]: Start difference. First operand 816 states. Second operand 2 states. [2019-10-15 01:07:39,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:39,243 INFO L93 Difference]: Finished difference Result 1325 states and 2137 transitions. [2019-10-15 01:07:39,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:07:39,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 161 [2019-10-15 01:07:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:39,283 INFO L225 Difference]: With dead ends: 1325 [2019-10-15 01:07:39,283 INFO L226 Difference]: Without dead ends: 670 [2019-10-15 01:07:39,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2019-10-15 01:07:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2019-10-15 01:07:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-15 01:07:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1060 transitions. [2019-10-15 01:07:39,407 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1060 transitions. Word has length 161 [2019-10-15 01:07:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:39,410 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 1060 transitions. [2019-10-15 01:07:39,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:07:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1060 transitions. [2019-10-15 01:07:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:07:39,419 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:39,420 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:39,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:39,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2071718859, now seen corresponding path program 1 times [2019-10-15 01:07:39,634 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:39,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941057868] [2019-10-15 01:07:39,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:39,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:39,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:39,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941057868] [2019-10-15 01:07:39,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635205140] [2019-10-15 01:07:39,953 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 01:07:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:40,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:40,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:07:40,633 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:40,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:40,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 01:07:40,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238273307] [2019-10-15 01:07:40,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:40,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:40,907 INFO L87 Difference]: Start difference. First operand 670 states and 1060 transitions. Second operand 4 states. [2019-10-15 01:07:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:41,098 INFO L93 Difference]: Finished difference Result 1323 states and 2110 transitions. [2019-10-15 01:07:41,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:41,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-15 01:07:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:41,106 INFO L225 Difference]: With dead ends: 1323 [2019-10-15 01:07:41,106 INFO L226 Difference]: Without dead ends: 679 [2019-10-15 01:07:41,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-15 01:07:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2019-10-15 01:07:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-15 01:07:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1074 transitions. [2019-10-15 01:07:41,165 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1074 transitions. Word has length 161 [2019-10-15 01:07:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:41,167 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1074 transitions. [2019-10-15 01:07:41,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1074 transitions. [2019-10-15 01:07:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 01:07:41,177 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:41,178 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:41,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:41,395 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:41,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1394548635, now seen corresponding path program 1 times [2019-10-15 01:07:41,396 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:41,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918755704] [2019-10-15 01:07:41,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:41,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:41,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:41,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918755704] [2019-10-15 01:07:41,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892817134] [2019-10-15 01:07:41,587 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 01:07:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:42,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:42,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:42,355 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:42,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:42,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:42,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658084712] [2019-10-15 01:07:42,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:42,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:42,682 INFO L87 Difference]: Start difference. First operand 679 states and 1074 transitions. Second operand 7 states. [2019-10-15 01:07:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:42,872 INFO L93 Difference]: Finished difference Result 1341 states and 2135 transitions. [2019-10-15 01:07:42,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:42,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2019-10-15 01:07:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:42,882 INFO L225 Difference]: With dead ends: 1341 [2019-10-15 01:07:42,883 INFO L226 Difference]: Without dead ends: 690 [2019-10-15 01:07:42,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 316 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-15 01:07:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2019-10-15 01:07:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-15 01:07:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1086 transitions. [2019-10-15 01:07:42,940 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1086 transitions. Word has length 163 [2019-10-15 01:07:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:42,940 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1086 transitions. [2019-10-15 01:07:42,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1086 transitions. [2019-10-15 01:07:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:07:42,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:42,947 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:43,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:43,155 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash -146815623, now seen corresponding path program 1 times [2019-10-15 01:07:43,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:43,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246043736] [2019-10-15 01:07:43,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:43,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:43,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:43,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246043736] [2019-10-15 01:07:43,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369651142] [2019-10-15 01:07:43,349 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 01:07:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:44,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:44,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:07:44,087 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:44,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:44,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:07:44,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106983819] [2019-10-15 01:07:44,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:44,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:44,261 INFO L87 Difference]: Start difference. First operand 686 states and 1086 transitions. Second operand 4 states. [2019-10-15 01:07:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:44,422 INFO L93 Difference]: Finished difference Result 1357 states and 2160 transitions. [2019-10-15 01:07:44,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:44,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-15 01:07:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:44,429 INFO L225 Difference]: With dead ends: 1357 [2019-10-15 01:07:44,431 INFO L226 Difference]: Without dead ends: 697 [2019-10-15 01:07:44,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 324 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-15 01:07:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-15 01:07:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-15 01:07:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1094 transitions. [2019-10-15 01:07:44,466 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1094 transitions. Word has length 164 [2019-10-15 01:07:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:44,467 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1094 transitions. [2019-10-15 01:07:44,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1094 transitions. [2019-10-15 01:07:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:07:44,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:44,474 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:44,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:44,684 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1430842587, now seen corresponding path program 1 times [2019-10-15 01:07:44,684 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:44,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819100264] [2019-10-15 01:07:44,685 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:44,685 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:44,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:44,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819100264] [2019-10-15 01:07:44,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003047535] [2019-10-15 01:07:44,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:45,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:45,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:45,828 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:46,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:46,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:46,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691516782] [2019-10-15 01:07:46,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:46,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:46,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:46,213 INFO L87 Difference]: Start difference. First operand 695 states and 1094 transitions. Second operand 7 states. [2019-10-15 01:07:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:46,376 INFO L93 Difference]: Finished difference Result 1358 states and 2151 transitions. [2019-10-15 01:07:46,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:46,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-10-15 01:07:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:46,384 INFO L225 Difference]: With dead ends: 1358 [2019-10-15 01:07:46,384 INFO L226 Difference]: Without dead ends: 704 [2019-10-15 01:07:46,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-15 01:07:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 695. [2019-10-15 01:07:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-15 01:07:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1094 transitions. [2019-10-15 01:07:46,422 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1094 transitions. Word has length 164 [2019-10-15 01:07:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:46,423 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1094 transitions. [2019-10-15 01:07:46,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1094 transitions. [2019-10-15 01:07:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:07:46,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:46,430 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:46,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:46,646 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash -907404626, now seen corresponding path program 1 times [2019-10-15 01:07:46,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:46,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648144381] [2019-10-15 01:07:46,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:46,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:46,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:46,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648144381] [2019-10-15 01:07:46,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099265408] [2019-10-15 01:07:46,756 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 01:07:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:47,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:47,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:47,428 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:07:47,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:47,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:07:47,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987226045] [2019-10-15 01:07:47,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:47,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:47,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:47,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:47,692 INFO L87 Difference]: Start difference. First operand 695 states and 1094 transitions. Second operand 4 states. [2019-10-15 01:07:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:48,036 INFO L93 Difference]: Finished difference Result 1391 states and 2221 transitions. [2019-10-15 01:07:48,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:48,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-15 01:07:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:48,047 INFO L225 Difference]: With dead ends: 1391 [2019-10-15 01:07:48,048 INFO L226 Difference]: Without dead ends: 737 [2019-10-15 01:07:48,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 330 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 01:07:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-15 01:07:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 734. [2019-10-15 01:07:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-15 01:07:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1167 transitions. [2019-10-15 01:07:48,094 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1167 transitions. Word has length 167 [2019-10-15 01:07:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:48,094 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1167 transitions. [2019-10-15 01:07:48,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1167 transitions. [2019-10-15 01:07:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 01:07:48,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:48,103 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:48,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:48,311 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash -548552272, now seen corresponding path program 1 times [2019-10-15 01:07:48,312 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:48,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693521937] [2019-10-15 01:07:48,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:07:48,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693521937] [2019-10-15 01:07:48,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518381176] [2019-10-15 01:07:48,427 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 01:07:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:49,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:49,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:07:49,261 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:49,522 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 01:07:49,522 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:49,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:49,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677354741] [2019-10-15 01:07:49,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:49,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:49,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:49,526 INFO L87 Difference]: Start difference. First operand 734 states and 1167 transitions. Second operand 5 states. [2019-10-15 01:07:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:49,631 INFO L93 Difference]: Finished difference Result 1415 states and 2267 transitions. [2019-10-15 01:07:49,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2019-10-15 01:07:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:49,638 INFO L225 Difference]: With dead ends: 1415 [2019-10-15 01:07:49,638 INFO L226 Difference]: Without dead ends: 734 [2019-10-15 01:07:49,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 335 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-15 01:07:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-15 01:07:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-15 01:07:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1162 transitions. [2019-10-15 01:07:49,669 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1162 transitions. Word has length 169 [2019-10-15 01:07:49,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:49,670 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1162 transitions. [2019-10-15 01:07:49,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:49,670 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1162 transitions. [2019-10-15 01:07:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:07:49,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:49,676 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:49,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:49,884 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash -981805208, now seen corresponding path program 1 times [2019-10-15 01:07:49,885 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:49,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248039311] [2019-10-15 01:07:49,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:49,999 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 01:07:50,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248039311] [2019-10-15 01:07:50,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349246567] [2019-10-15 01:07:50,004 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 01:07:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:50,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:50,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:07:50,834 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:07:51,121 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:51,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:07:51,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004422434] [2019-10-15 01:07:51,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:07:51,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:51,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:07:51,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:07:51,123 INFO L87 Difference]: Start difference. First operand 734 states and 1162 transitions. Second operand 11 states. [2019-10-15 01:07:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:51,313 INFO L93 Difference]: Finished difference Result 1389 states and 2208 transitions. [2019-10-15 01:07:51,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:07:51,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2019-10-15 01:07:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:51,320 INFO L225 Difference]: With dead ends: 1389 [2019-10-15 01:07:51,320 INFO L226 Difference]: Without dead ends: 754 [2019-10-15 01:07:51,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:07:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-10-15 01:07:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 741. [2019-10-15 01:07:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-15 01:07:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1173 transitions. [2019-10-15 01:07:51,353 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1173 transitions. Word has length 170 [2019-10-15 01:07:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:51,354 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1173 transitions. [2019-10-15 01:07:51,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:07:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1173 transitions. [2019-10-15 01:07:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:07:51,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:51,360 INFO L380 BasicCegarLoop]: trace histogram [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 01:07:51,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:51,579 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash -304800936, now seen corresponding path program 1 times [2019-10-15 01:07:51,580 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:51,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997871615] [2019-10-15 01:07:51,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:07:51,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997871615] [2019-10-15 01:07:51,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105242465] [2019-10-15 01:07:51,789 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 01:07:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:52,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:52,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:07:52,637 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:07:52,894 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:52,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 10 [2019-10-15 01:07:52,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367995945] [2019-10-15 01:07:52,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:07:52,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:52,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:07:52,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:52,896 INFO L87 Difference]: Start difference. First operand 741 states and 1173 transitions. Second operand 8 states. [2019-10-15 01:07:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:53,050 INFO L93 Difference]: Finished difference Result 1387 states and 2204 transitions. [2019-10-15 01:07:53,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:53,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2019-10-15 01:07:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:53,057 INFO L225 Difference]: With dead ends: 1387 [2019-10-15 01:07:53,058 INFO L226 Difference]: Without dead ends: 752 [2019-10-15 01:07:53,061 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 333 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-15 01:07:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 745. [2019-10-15 01:07:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-10-15 01:07:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1178 transitions. [2019-10-15 01:07:53,091 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1178 transitions. Word has length 171 [2019-10-15 01:07:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:53,092 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 1178 transitions. [2019-10-15 01:07:53,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:07:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1178 transitions. [2019-10-15 01:07:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:07:53,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:53,098 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:53,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:53,307 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash 873328068, now seen corresponding path program 1 times [2019-10-15 01:07:53,308 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:53,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711867494] [2019-10-15 01:07:53,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:53,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:53,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:07:53,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711867494] [2019-10-15 01:07:53,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690781320] [2019-10-15 01:07:53,440 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 01:07:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:54,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:54,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:54,296 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:54,441 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:54,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:54,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454214696] [2019-10-15 01:07:54,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:54,442 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:54,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:54,443 INFO L87 Difference]: Start difference. First operand 745 states and 1178 transitions. Second operand 5 states. [2019-10-15 01:07:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:54,665 INFO L93 Difference]: Finished difference Result 1425 states and 2281 transitions. [2019-10-15 01:07:54,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:54,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2019-10-15 01:07:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:54,671 INFO L225 Difference]: With dead ends: 1425 [2019-10-15 01:07:54,672 INFO L226 Difference]: Without dead ends: 790 [2019-10-15 01:07:54,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 341 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 01:07:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-10-15 01:07:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 787. [2019-10-15 01:07:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-10-15 01:07:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1254 transitions. [2019-10-15 01:07:54,700 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1254 transitions. Word has length 172 [2019-10-15 01:07:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:54,701 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1254 transitions. [2019-10-15 01:07:54,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1254 transitions. [2019-10-15 01:07:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:07:54,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:54,707 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:54,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:54,922 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1863930726, now seen corresponding path program 1 times [2019-10-15 01:07:54,923 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:54,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530226304] [2019-10-15 01:07:54,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:54,924 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:54,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:07:55,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530226304] [2019-10-15 01:07:55,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081129813] [2019-10-15 01:07:55,025 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 01:07:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:55,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:55,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:07:55,778 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:07:55,944 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:55,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-10-15 01:07:55,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829505691] [2019-10-15 01:07:55,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:07:55,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:55,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:07:55,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:55,946 INFO L87 Difference]: Start difference. First operand 787 states and 1254 transitions. Second operand 6 states. [2019-10-15 01:07:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:56,038 INFO L93 Difference]: Finished difference Result 1479 states and 2366 transitions. [2019-10-15 01:07:56,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:56,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2019-10-15 01:07:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:56,044 INFO L225 Difference]: With dead ends: 1479 [2019-10-15 01:07:56,044 INFO L226 Difference]: Without dead ends: 783 [2019-10-15 01:07:56,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-15 01:07:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 780. [2019-10-15 01:07:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-15 01:07:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1241 transitions. [2019-10-15 01:07:56,071 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1241 transitions. Word has length 173 [2019-10-15 01:07:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:56,071 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 1241 transitions. [2019-10-15 01:07:56,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:07:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1241 transitions. [2019-10-15 01:07:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:07:56,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:56,079 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:56,363 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:56,364 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1965179543, now seen corresponding path program 1 times [2019-10-15 01:07:56,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:56,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918248658] [2019-10-15 01:07:56,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:56,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:56,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:07:56,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918248658] [2019-10-15 01:07:56,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594562634] [2019-10-15 01:07:56,462 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 01:07:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:57,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:07:57,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:57,245 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 01:07:57,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:07:57,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:57,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:07:57,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075055784] [2019-10-15 01:07:57,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:57,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:57,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:57,559 INFO L87 Difference]: Start difference. First operand 780 states and 1241 transitions. Second operand 5 states. [2019-10-15 01:07:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:58,557 INFO L93 Difference]: Finished difference Result 1419 states and 2295 transitions. [2019-10-15 01:07:58,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:07:58,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-15 01:07:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:58,564 INFO L225 Difference]: With dead ends: 1419 [2019-10-15 01:07:58,564 INFO L226 Difference]: Without dead ends: 788 [2019-10-15 01:07:58,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:07:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-15 01:07:58,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2019-10-15 01:07:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2019-10-15 01:07:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1254 transitions. [2019-10-15 01:07:58,594 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1254 transitions. Word has length 174 [2019-10-15 01:07:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:58,595 INFO L462 AbstractCegarLoop]: Abstraction has 788 states and 1254 transitions. [2019-10-15 01:07:58,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1254 transitions. [2019-10-15 01:07:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:07:58,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:58,602 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:58,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:58,811 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash -97511625, now seen corresponding path program 1 times [2019-10-15 01:07:58,811 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:58,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010943994] [2019-10-15 01:07:58,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:58,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:58,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:07:58,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010943994] [2019-10-15 01:07:58,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994611430] [2019-10-15 01:07:58,984 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 01:07:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:59,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:07:59,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:07:59,781 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:00,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:00,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:00,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55820073] [2019-10-15 01:08:00,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:00,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:00,113 INFO L87 Difference]: Start difference. First operand 788 states and 1254 transitions. Second operand 5 states. [2019-10-15 01:08:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:01,110 INFO L93 Difference]: Finished difference Result 1435 states and 2318 transitions. [2019-10-15 01:08:01,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:01,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2019-10-15 01:08:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:01,117 INFO L225 Difference]: With dead ends: 1435 [2019-10-15 01:08:01,117 INFO L226 Difference]: Without dead ends: 796 [2019-10-15 01:08:01,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2019-10-15 01:08:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2019-10-15 01:08:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-15 01:08:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1267 transitions. [2019-10-15 01:08:01,146 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1267 transitions. Word has length 176 [2019-10-15 01:08:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:01,146 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1267 transitions. [2019-10-15 01:08:01,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1267 transitions. [2019-10-15 01:08:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:08:01,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:01,153 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:01,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:01,361 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash 654361559, now seen corresponding path program 1 times [2019-10-15 01:08:01,361 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:01,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937378879] [2019-10-15 01:08:01,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:01,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:01,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:01,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937378879] [2019-10-15 01:08:01,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351890116] [2019-10-15 01:08:01,457 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 01:08:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:02,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:02,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:02,439 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:02,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:02,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:02,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417763374] [2019-10-15 01:08:02,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:02,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:02,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:02,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:02,756 INFO L87 Difference]: Start difference. First operand 796 states and 1267 transitions. Second operand 5 states. [2019-10-15 01:08:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:03,707 INFO L93 Difference]: Finished difference Result 1451 states and 2341 transitions. [2019-10-15 01:08:03,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:03,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2019-10-15 01:08:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:03,713 INFO L225 Difference]: With dead ends: 1451 [2019-10-15 01:08:03,713 INFO L226 Difference]: Without dead ends: 804 [2019-10-15 01:08:03,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 346 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-15 01:08:03,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2019-10-15 01:08:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2019-10-15 01:08:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1280 transitions. [2019-10-15 01:08:03,742 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1280 transitions. Word has length 178 [2019-10-15 01:08:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:03,743 INFO L462 AbstractCegarLoop]: Abstraction has 804 states and 1280 transitions. [2019-10-15 01:08:03,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1280 transitions. [2019-10-15 01:08:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:08:03,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:03,748 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:03,955 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:03,955 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash -946321425, now seen corresponding path program 1 times [2019-10-15 01:08:03,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:03,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809939835] [2019-10-15 01:08:03,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:03,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:03,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:04,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809939835] [2019-10-15 01:08:04,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115022686] [2019-10-15 01:08:04,054 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 01:08:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:04,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:04,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:04,891 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:05,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:05,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-15 01:08:05,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861710378] [2019-10-15 01:08:05,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:05,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:05,279 INFO L87 Difference]: Start difference. First operand 804 states and 1280 transitions. Second operand 5 states. [2019-10-15 01:08:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:06,205 INFO L93 Difference]: Finished difference Result 1467 states and 2364 transitions. [2019-10-15 01:08:06,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:06,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2019-10-15 01:08:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:06,211 INFO L225 Difference]: With dead ends: 1467 [2019-10-15 01:08:06,212 INFO L226 Difference]: Without dead ends: 812 [2019-10-15 01:08:06,215 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 350 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2019-10-15 01:08:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2019-10-15 01:08:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2019-10-15 01:08:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1293 transitions. [2019-10-15 01:08:06,239 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1293 transitions. Word has length 180 [2019-10-15 01:08:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:06,239 INFO L462 AbstractCegarLoop]: Abstraction has 812 states and 1293 transitions. [2019-10-15 01:08:06,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1293 transitions. [2019-10-15 01:08:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:08:06,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:06,244 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:06,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:06,452 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:06,452 INFO L82 PathProgramCache]: Analyzing trace with hash 701367063, now seen corresponding path program 1 times [2019-10-15 01:08:06,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:06,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689783235] [2019-10-15 01:08:06,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:06,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:06,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:06,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689783235] [2019-10-15 01:08:06,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585497913] [2019-10-15 01:08:06,544 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 01:08:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:07,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:08:07,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:07,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:07,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:07,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-15 01:08:07,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703716156] [2019-10-15 01:08:07,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:07,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:07,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:07,523 INFO L87 Difference]: Start difference. First operand 812 states and 1293 transitions. Second operand 4 states. [2019-10-15 01:08:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:07,582 INFO L93 Difference]: Finished difference Result 1583 states and 2542 transitions. [2019-10-15 01:08:07,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:07,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2019-10-15 01:08:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:07,587 INFO L225 Difference]: With dead ends: 1583 [2019-10-15 01:08:07,587 INFO L226 Difference]: Without dead ends: 789 [2019-10-15 01:08:07,590 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2019-10-15 01:08:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2019-10-15 01:08:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-15 01:08:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1250 transitions. [2019-10-15 01:08:07,613 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1250 transitions. Word has length 182 [2019-10-15 01:08:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:07,614 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1250 transitions. [2019-10-15 01:08:07,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1250 transitions. [2019-10-15 01:08:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:08:07,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:07,620 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]