/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:45:24,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:45:24,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:45:24,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:45:24,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:45:24,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:45:24,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:45:24,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:45:24,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:45:24,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:45:24,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:45:24,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:45:24,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:45:24,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:45:24,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:45:24,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:45:24,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:45:24,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:45:24,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:45:24,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:45:24,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:45:24,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:45:24,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:45:24,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:45:24,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:45:24,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:45:24,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:45:24,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:45:24,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:45:24,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:45:24,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:45:24,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:45:24,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:45:24,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:45:24,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:45:24,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:45:24,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:45:24,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:45:24,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:45:24,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:45:24,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:45:24,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:45:24,183 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:45:24,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:45:24,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:45:24,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:45:24,190 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:45:24,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:45:24,190 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:45:24,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:45:24,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:45:24,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:45:24,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:45:24,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:45:24,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:45:24,192 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:45:24,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:45:24,193 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:45:24,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:45:24,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:45:24,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:45:24,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:45:24,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:45:24,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:45:24,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:45:24,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:45:24,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:45:24,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:45:24,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:45:24,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:45:24,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:45:24,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:45:24,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:45:24,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:45:24,527 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:45:24,527 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:45:24,528 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-11-07 00:45:24,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd78f2e2/1d1e46341cef4e6b93aa8e7a032db895/FLAGf05e0ad26 [2019-11-07 00:45:25,275 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:45:25,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-11-07 00:45:25,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd78f2e2/1d1e46341cef4e6b93aa8e7a032db895/FLAGf05e0ad26 [2019-11-07 00:45:25,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd78f2e2/1d1e46341cef4e6b93aa8e7a032db895 [2019-11-07 00:45:25,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:45:25,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:45:25,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:25,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:45:25,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:45:25,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:25" (1/1) ... [2019-11-07 00:45:25,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1adb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:25, skipping insertion in model container [2019-11-07 00:45:25,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:25" (1/1) ... [2019-11-07 00:45:25,480 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:45:25,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:45:26,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:26,316 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:45:26,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:26,558 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:45:26,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26 WrapperNode [2019-11-07 00:45:26,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:26,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:45:26,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:45:26,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:45:26,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... [2019-11-07 00:45:26,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:45:26,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:45:26,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:45:26,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:45:26,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:45:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:45:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:45:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:45:26,859 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:45:26,860 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:45:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:45:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:45:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:45:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:45:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:45:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:45:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:45:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:45:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:45:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:45:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:45:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:45:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:45:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:45:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:45:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:45:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:45:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 00:45:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:45:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:45:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:45:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 00:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 00:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 00:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 00:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 00:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 00:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:45:29,375 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:45:29,376 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:45:29,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:29 BoogieIcfgContainer [2019-11-07 00:45:29,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:45:29,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:45:29,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:45:29,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:45:29,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:25" (1/3) ... [2019-11-07 00:45:29,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633bae8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:29, skipping insertion in model container [2019-11-07 00:45:29,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:26" (2/3) ... [2019-11-07 00:45:29,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633bae8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:29, skipping insertion in model container [2019-11-07 00:45:29,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:29" (3/3) ... [2019-11-07 00:45:29,389 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-11-07 00:45:29,400 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:45:29,410 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:45:29,426 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:45:29,475 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:45:29,476 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:45:29,476 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:45:29,476 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:45:29,476 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:45:29,476 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:45:29,476 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:45:29,476 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:45:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states. [2019-11-07 00:45:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 00:45:29,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:29,569 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:29,573 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:29,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1751171414, now seen corresponding path program 1 times [2019-11-07 00:45:29,594 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:29,595 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724987734] [2019-11-07 00:45:29,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:30,326 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724987734] [2019-11-07 00:45:30,327 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:30,327 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:30,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20517628] [2019-11-07 00:45:30,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:30,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:30,354 INFO L87 Difference]: Start difference. First operand 916 states. Second operand 6 states. [2019-11-07 00:45:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:30,591 INFO L93 Difference]: Finished difference Result 1478 states and 2306 transitions. [2019-11-07 00:45:30,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:30,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 00:45:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:30,634 INFO L225 Difference]: With dead ends: 1478 [2019-11-07 00:45:30,634 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:30,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1149 transitions. [2019-11-07 00:45:30,798 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1149 transitions. Word has length 120 [2019-11-07 00:45:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:30,812 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1149 transitions. [2019-11-07 00:45:30,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:30,812 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1149 transitions. [2019-11-07 00:45:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 00:45:30,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:30,825 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:30,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:30,825 INFO L82 PathProgramCache]: Analyzing trace with hash 490428433, now seen corresponding path program 1 times [2019-11-07 00:45:30,826 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:30,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098619575] [2019-11-07 00:45:30,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:31,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098619575] [2019-11-07 00:45:31,102 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:31,102 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:31,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229109515] [2019-11-07 00:45:31,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:31,104 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:31,105 INFO L87 Difference]: Start difference. First operand 744 states and 1149 transitions. Second operand 4 states. [2019-11-07 00:45:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:31,171 INFO L93 Difference]: Finished difference Result 1431 states and 2229 transitions. [2019-11-07 00:45:31,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:31,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-07 00:45:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:31,178 INFO L225 Difference]: With dead ends: 1431 [2019-11-07 00:45:31,178 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:31,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1148 transitions. [2019-11-07 00:45:31,213 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1148 transitions. Word has length 123 [2019-11-07 00:45:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:31,214 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1148 transitions. [2019-11-07 00:45:31,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1148 transitions. [2019-11-07 00:45:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 00:45:31,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:31,218 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:31,218 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash -620177609, now seen corresponding path program 1 times [2019-11-07 00:45:31,219 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:31,219 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038282016] [2019-11-07 00:45:31,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:31,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038282016] [2019-11-07 00:45:31,413 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:31,413 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:31,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332216719] [2019-11-07 00:45:31,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:31,415 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:31,416 INFO L87 Difference]: Start difference. First operand 744 states and 1148 transitions. Second operand 4 states. [2019-11-07 00:45:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:31,498 INFO L93 Difference]: Finished difference Result 1431 states and 2228 transitions. [2019-11-07 00:45:31,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:31,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-07 00:45:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:31,505 INFO L225 Difference]: With dead ends: 1431 [2019-11-07 00:45:31,505 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:31,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:31,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1147 transitions. [2019-11-07 00:45:31,538 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1147 transitions. Word has length 124 [2019-11-07 00:45:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:31,539 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1147 transitions. [2019-11-07 00:45:31,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1147 transitions. [2019-11-07 00:45:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 00:45:31,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:31,542 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:31,543 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 669317965, now seen corresponding path program 1 times [2019-11-07 00:45:31,543 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:31,544 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971720431] [2019-11-07 00:45:31,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:31,781 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971720431] [2019-11-07 00:45:31,781 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:31,781 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:31,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177146356] [2019-11-07 00:45:31,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:31,783 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:31,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:31,784 INFO L87 Difference]: Start difference. First operand 744 states and 1147 transitions. Second operand 4 states. [2019-11-07 00:45:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:31,854 INFO L93 Difference]: Finished difference Result 1431 states and 2227 transitions. [2019-11-07 00:45:31,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:31,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-07 00:45:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:31,868 INFO L225 Difference]: With dead ends: 1431 [2019-11-07 00:45:31,868 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:31,874 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1146 transitions. [2019-11-07 00:45:31,911 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1146 transitions. Word has length 125 [2019-11-07 00:45:31,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:31,915 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1146 transitions. [2019-11-07 00:45:31,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1146 transitions. [2019-11-07 00:45:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 00:45:31,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:31,922 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:31,923 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -947447693, now seen corresponding path program 1 times [2019-11-07 00:45:31,923 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:31,924 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560790406] [2019-11-07 00:45:31,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:32,085 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560790406] [2019-11-07 00:45:32,086 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:32,086 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:32,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372265329] [2019-11-07 00:45:32,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:32,087 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:32,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:32,090 INFO L87 Difference]: Start difference. First operand 744 states and 1146 transitions. Second operand 4 states. [2019-11-07 00:45:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:32,152 INFO L93 Difference]: Finished difference Result 1431 states and 2226 transitions. [2019-11-07 00:45:32,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:32,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-11-07 00:45:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:32,172 INFO L225 Difference]: With dead ends: 1431 [2019-11-07 00:45:32,172 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:32,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1145 transitions. [2019-11-07 00:45:32,209 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1145 transitions. Word has length 126 [2019-11-07 00:45:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:32,210 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1145 transitions. [2019-11-07 00:45:32,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1145 transitions. [2019-11-07 00:45:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:45:32,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:32,214 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:32,215 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1830968969, now seen corresponding path program 1 times [2019-11-07 00:45:32,215 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:32,215 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153834682] [2019-11-07 00:45:32,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:32,487 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153834682] [2019-11-07 00:45:32,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:32,488 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:32,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314183432] [2019-11-07 00:45:32,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:32,489 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:32,489 INFO L87 Difference]: Start difference. First operand 744 states and 1145 transitions. Second operand 4 states. [2019-11-07 00:45:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:32,552 INFO L93 Difference]: Finished difference Result 1431 states and 2225 transitions. [2019-11-07 00:45:32,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:32,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-07 00:45:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:32,560 INFO L225 Difference]: With dead ends: 1431 [2019-11-07 00:45:32,561 INFO L226 Difference]: Without dead ends: 744 [2019-11-07 00:45:32,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-07 00:45:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2019-11-07 00:45:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-11-07 00:45:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1144 transitions. [2019-11-07 00:45:32,592 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1144 transitions. Word has length 127 [2019-11-07 00:45:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:32,592 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 1144 transitions. [2019-11-07 00:45:32,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1144 transitions. [2019-11-07 00:45:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:45:32,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:32,595 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:32,595 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash -873883217, now seen corresponding path program 1 times [2019-11-07 00:45:32,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:32,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785553294] [2019-11-07 00:45:32,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:32,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785553294] [2019-11-07 00:45:32,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:32,807 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:45:32,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852991375] [2019-11-07 00:45:32,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:45:32,808 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:45:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:45:32,810 INFO L87 Difference]: Start difference. First operand 744 states and 1144 transitions. Second operand 11 states. [2019-11-07 00:45:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:33,010 INFO L93 Difference]: Finished difference Result 1389 states and 2145 transitions. [2019-11-07 00:45:33,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:45:33,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2019-11-07 00:45:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:33,017 INFO L225 Difference]: With dead ends: 1389 [2019-11-07 00:45:33,017 INFO L226 Difference]: Without dead ends: 753 [2019-11-07 00:45:33,021 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:45:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-11-07 00:45:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2019-11-07 00:45:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2019-11-07 00:45:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1153 transitions. [2019-11-07 00:45:33,054 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1153 transitions. Word has length 128 [2019-11-07 00:45:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:33,054 INFO L462 AbstractCegarLoop]: Abstraction has 751 states and 1153 transitions. [2019-11-07 00:45:33,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:45:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1153 transitions. [2019-11-07 00:45:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 00:45:33,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:33,058 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:33,058 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:33,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:33,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1613236558, now seen corresponding path program 1 times [2019-11-07 00:45:33,059 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:33,059 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487806948] [2019-11-07 00:45:33,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:33,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487806948] [2019-11-07 00:45:33,181 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:33,181 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:33,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462767888] [2019-11-07 00:45:33,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:33,183 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:33,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:33,183 INFO L87 Difference]: Start difference. First operand 751 states and 1153 transitions. Second operand 4 states. [2019-11-07 00:45:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:33,238 INFO L93 Difference]: Finished difference Result 1437 states and 2231 transitions. [2019-11-07 00:45:33,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:33,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-11-07 00:45:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:33,244 INFO L225 Difference]: With dead ends: 1437 [2019-11-07 00:45:33,245 INFO L226 Difference]: Without dead ends: 738 [2019-11-07 00:45:33,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-11-07 00:45:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-11-07 00:45:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-11-07 00:45:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1130 transitions. [2019-11-07 00:45:33,353 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1130 transitions. Word has length 128 [2019-11-07 00:45:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:33,353 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1130 transitions. [2019-11-07 00:45:33,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1130 transitions. [2019-11-07 00:45:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 00:45:33,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:33,356 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:33,357 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1929128491, now seen corresponding path program 1 times [2019-11-07 00:45:33,357 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:33,357 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693393298] [2019-11-07 00:45:33,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:33,503 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693393298] [2019-11-07 00:45:33,503 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:33,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:33,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135022837] [2019-11-07 00:45:33,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:33,505 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:33,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:33,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:33,505 INFO L87 Difference]: Start difference. First operand 738 states and 1130 transitions. Second operand 6 states. [2019-11-07 00:45:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:33,728 INFO L93 Difference]: Finished difference Result 1377 states and 2123 transitions. [2019-11-07 00:45:33,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:33,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-11-07 00:45:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:33,734 INFO L225 Difference]: With dead ends: 1377 [2019-11-07 00:45:33,734 INFO L226 Difference]: Without dead ends: 738 [2019-11-07 00:45:33,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-11-07 00:45:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-11-07 00:45:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-11-07 00:45:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1126 transitions. [2019-11-07 00:45:33,762 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1126 transitions. Word has length 129 [2019-11-07 00:45:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:33,762 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1126 transitions. [2019-11-07 00:45:33,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1126 transitions. [2019-11-07 00:45:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:45:33,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:33,765 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:33,766 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:33,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:33,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2134384978, now seen corresponding path program 1 times [2019-11-07 00:45:33,766 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:33,766 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277026970] [2019-11-07 00:45:33,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:33,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277026970] [2019-11-07 00:45:33,897 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:33,897 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:33,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129693153] [2019-11-07 00:45:33,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:33,898 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:33,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:33,899 INFO L87 Difference]: Start difference. First operand 738 states and 1126 transitions. Second operand 6 states. [2019-11-07 00:45:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:34,122 INFO L93 Difference]: Finished difference Result 1377 states and 2119 transitions. [2019-11-07 00:45:34,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:34,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-11-07 00:45:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:34,133 INFO L225 Difference]: With dead ends: 1377 [2019-11-07 00:45:34,133 INFO L226 Difference]: Without dead ends: 738 [2019-11-07 00:45:34,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-11-07 00:45:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-11-07 00:45:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-11-07 00:45:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1122 transitions. [2019-11-07 00:45:34,183 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1122 transitions. Word has length 130 [2019-11-07 00:45:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:34,185 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1122 transitions. [2019-11-07 00:45:34,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1122 transitions. [2019-11-07 00:45:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:45:34,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:34,188 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:34,188 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -920602288, now seen corresponding path program 1 times [2019-11-07 00:45:34,189 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:34,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315395650] [2019-11-07 00:45:34,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:34,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315395650] [2019-11-07 00:45:34,398 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:34,398 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:34,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649905894] [2019-11-07 00:45:34,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:34,399 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:34,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:34,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:34,400 INFO L87 Difference]: Start difference. First operand 738 states and 1122 transitions. Second operand 6 states. [2019-11-07 00:45:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:34,602 INFO L93 Difference]: Finished difference Result 1377 states and 2115 transitions. [2019-11-07 00:45:34,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:34,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-11-07 00:45:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:34,613 INFO L225 Difference]: With dead ends: 1377 [2019-11-07 00:45:34,613 INFO L226 Difference]: Without dead ends: 738 [2019-11-07 00:45:34,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-11-07 00:45:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-11-07 00:45:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-11-07 00:45:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1118 transitions. [2019-11-07 00:45:34,670 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1118 transitions. Word has length 131 [2019-11-07 00:45:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:34,670 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1118 transitions. [2019-11-07 00:45:34,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1118 transitions. [2019-11-07 00:45:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:45:34,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:34,677 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:34,677 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1980126672, now seen corresponding path program 1 times [2019-11-07 00:45:34,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:34,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259536917] [2019-11-07 00:45:34,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:34,893 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259536917] [2019-11-07 00:45:34,894 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:34,894 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:45:34,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478304416] [2019-11-07 00:45:34,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:45:34,897 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:34,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:45:34,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:34,898 INFO L87 Difference]: Start difference. First operand 738 states and 1118 transitions. Second operand 7 states. [2019-11-07 00:45:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:35,024 INFO L93 Difference]: Finished difference Result 1377 states and 2111 transitions. [2019-11-07 00:45:35,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:45:35,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 00:45:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:35,033 INFO L225 Difference]: With dead ends: 1377 [2019-11-07 00:45:35,034 INFO L226 Difference]: Without dead ends: 717 [2019-11-07 00:45:35,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-07 00:45:35,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-07 00:45:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:45:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1084 transitions. [2019-11-07 00:45:35,085 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1084 transitions. Word has length 131 [2019-11-07 00:45:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:35,086 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1084 transitions. [2019-11-07 00:45:35,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:45:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1084 transitions. [2019-11-07 00:45:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:45:35,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:35,091 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:35,091 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1963930793, now seen corresponding path program 1 times [2019-11-07 00:45:35,092 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:35,093 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983478881] [2019-11-07 00:45:35,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:35,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983478881] [2019-11-07 00:45:35,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:35,307 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:35,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579563196] [2019-11-07 00:45:35,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:35,309 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:35,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:35,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:35,310 INFO L87 Difference]: Start difference. First operand 717 states and 1084 transitions. Second operand 6 states. [2019-11-07 00:45:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:35,439 INFO L93 Difference]: Finished difference Result 1356 states and 2077 transitions. [2019-11-07 00:45:35,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:35,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-11-07 00:45:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:35,450 INFO L225 Difference]: With dead ends: 1356 [2019-11-07 00:45:35,451 INFO L226 Difference]: Without dead ends: 717 [2019-11-07 00:45:35,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-07 00:45:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-07 00:45:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:45:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1083 transitions. [2019-11-07 00:45:35,481 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1083 transitions. Word has length 132 [2019-11-07 00:45:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:35,482 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1083 transitions. [2019-11-07 00:45:35,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1083 transitions. [2019-11-07 00:45:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:45:35,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:35,485 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:35,485 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -775379851, now seen corresponding path program 1 times [2019-11-07 00:45:35,486 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:35,486 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903807016] [2019-11-07 00:45:35,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:35,684 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903807016] [2019-11-07 00:45:35,685 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:35,685 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:35,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566531713] [2019-11-07 00:45:35,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:35,686 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:35,687 INFO L87 Difference]: Start difference. First operand 717 states and 1083 transitions. Second operand 6 states. [2019-11-07 00:45:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:35,791 INFO L93 Difference]: Finished difference Result 1356 states and 2076 transitions. [2019-11-07 00:45:35,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:35,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-11-07 00:45:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:35,797 INFO L225 Difference]: With dead ends: 1356 [2019-11-07 00:45:35,797 INFO L226 Difference]: Without dead ends: 717 [2019-11-07 00:45:35,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-07 00:45:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-07 00:45:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:45:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1082 transitions. [2019-11-07 00:45:35,824 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1082 transitions. Word has length 133 [2019-11-07 00:45:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:35,824 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1082 transitions. [2019-11-07 00:45:35,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1082 transitions. [2019-11-07 00:45:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:45:35,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:35,830 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:35,830 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2026224674, now seen corresponding path program 1 times [2019-11-07 00:45:35,831 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:35,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599314915] [2019-11-07 00:45:35,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:35,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599314915] [2019-11-07 00:45:35,948 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:35,948 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:35,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897996153] [2019-11-07 00:45:35,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:35,949 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:35,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:35,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:35,950 INFO L87 Difference]: Start difference. First operand 717 states and 1082 transitions. Second operand 4 states. [2019-11-07 00:45:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:36,001 INFO L93 Difference]: Finished difference Result 1356 states and 2075 transitions. [2019-11-07 00:45:36,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:36,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-11-07 00:45:36,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:36,007 INFO L225 Difference]: With dead ends: 1356 [2019-11-07 00:45:36,008 INFO L226 Difference]: Without dead ends: 717 [2019-11-07 00:45:36,013 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-07 00:45:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-07 00:45:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:45:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1081 transitions. [2019-11-07 00:45:36,036 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1081 transitions. Word has length 134 [2019-11-07 00:45:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:36,036 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1081 transitions. [2019-11-07 00:45:36,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1081 transitions. [2019-11-07 00:45:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:45:36,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:36,039 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:36,039 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash 881957212, now seen corresponding path program 1 times [2019-11-07 00:45:36,040 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:36,040 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239070109] [2019-11-07 00:45:36,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:36,243 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239070109] [2019-11-07 00:45:36,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:36,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-07 00:45:36,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108859074] [2019-11-07 00:45:36,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-07 00:45:36,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:36,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-07 00:45:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:45:36,247 INFO L87 Difference]: Start difference. First operand 717 states and 1081 transitions. Second operand 13 states. [2019-11-07 00:45:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:36,452 INFO L93 Difference]: Finished difference Result 1357 states and 2074 transitions. [2019-11-07 00:45:36,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:45:36,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 134 [2019-11-07 00:45:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:36,458 INFO L225 Difference]: With dead ends: 1357 [2019-11-07 00:45:36,458 INFO L226 Difference]: Without dead ends: 717 [2019-11-07 00:45:36,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:45:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-07 00:45:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-07 00:45:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:45:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1080 transitions. [2019-11-07 00:45:36,496 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1080 transitions. Word has length 134 [2019-11-07 00:45:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:36,498 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1080 transitions. [2019-11-07 00:45:36,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-07 00:45:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1080 transitions. [2019-11-07 00:45:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:45:36,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:36,500 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:36,501 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -301817066, now seen corresponding path program 1 times [2019-11-07 00:45:36,501 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:36,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512716572] [2019-11-07 00:45:36,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:36,660 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512716572] [2019-11-07 00:45:36,660 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:36,661 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:36,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966258200] [2019-11-07 00:45:36,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:36,661 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:36,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:36,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:36,662 INFO L87 Difference]: Start difference. First operand 717 states and 1080 transitions. Second operand 4 states. [2019-11-07 00:45:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:37,766 INFO L93 Difference]: Finished difference Result 2012 states and 3085 transitions. [2019-11-07 00:45:37,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:37,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-11-07 00:45:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:37,779 INFO L225 Difference]: With dead ends: 2012 [2019-11-07 00:45:37,780 INFO L226 Difference]: Without dead ends: 1381 [2019-11-07 00:45:37,784 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2019-11-07 00:45:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1368. [2019-11-07 00:45:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-11-07 00:45:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2074 transitions. [2019-11-07 00:45:37,841 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2074 transitions. Word has length 135 [2019-11-07 00:45:37,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:37,842 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2074 transitions. [2019-11-07 00:45:37,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:37,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2074 transitions. [2019-11-07 00:45:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 00:45:37,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:37,845 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:37,846 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:37,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1014149374, now seen corresponding path program 1 times [2019-11-07 00:45:37,846 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:37,846 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503449621] [2019-11-07 00:45:37,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:38,045 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503449621] [2019-11-07 00:45:38,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:38,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:38,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693939422] [2019-11-07 00:45:38,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:38,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:38,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:38,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:38,047 INFO L87 Difference]: Start difference. First operand 1368 states and 2074 transitions. Second operand 6 states. [2019-11-07 00:45:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:42,517 INFO L93 Difference]: Finished difference Result 3425 states and 5390 transitions. [2019-11-07 00:45:42,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:42,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-11-07 00:45:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:42,571 INFO L225 Difference]: With dead ends: 3425 [2019-11-07 00:45:42,571 INFO L226 Difference]: Without dead ends: 2801 [2019-11-07 00:45:42,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-11-07 00:45:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2752. [2019-11-07 00:45:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2019-11-07 00:45:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4348 transitions. [2019-11-07 00:45:42,910 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4348 transitions. Word has length 136 [2019-11-07 00:45:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:42,911 INFO L462 AbstractCegarLoop]: Abstraction has 2752 states and 4348 transitions. [2019-11-07 00:45:42,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4348 transitions. [2019-11-07 00:45:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:45:42,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:42,942 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:42,942 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1438060187, now seen corresponding path program 1 times [2019-11-07 00:45:42,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:42,943 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465382927] [2019-11-07 00:45:42,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:43,368 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465382927] [2019-11-07 00:45:43,368 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:43,369 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:43,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288872461] [2019-11-07 00:45:43,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:43,370 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:43,370 INFO L87 Difference]: Start difference. First operand 2752 states and 4348 transitions. Second operand 9 states. [2019-11-07 00:45:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:48,513 INFO L93 Difference]: Finished difference Result 5386 states and 8691 transitions. [2019-11-07 00:45:48,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:45:48,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2019-11-07 00:45:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:48,535 INFO L225 Difference]: With dead ends: 5386 [2019-11-07 00:45:48,535 INFO L226 Difference]: Without dead ends: 2776 [2019-11-07 00:45:48,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:45:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-11-07 00:45:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2768. [2019-11-07 00:45:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2768 states. [2019-11-07 00:45:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4428 transitions. [2019-11-07 00:45:48,688 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4428 transitions. Word has length 181 [2019-11-07 00:45:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:48,689 INFO L462 AbstractCegarLoop]: Abstraction has 2768 states and 4428 transitions. [2019-11-07 00:45:48,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4428 transitions. [2019-11-07 00:45:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:45:48,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:48,699 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:48,700 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:48,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2917670, now seen corresponding path program 1 times [2019-11-07 00:45:48,700 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:48,700 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244134221] [2019-11-07 00:45:48,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:45:48,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244134221] [2019-11-07 00:45:48,920 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:48,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:45:48,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85736265] [2019-11-07 00:45:48,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:45:48,921 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:45:48,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:48,922 INFO L87 Difference]: Start difference. First operand 2768 states and 4428 transitions. Second operand 8 states. [2019-11-07 00:45:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:56,967 INFO L93 Difference]: Finished difference Result 10376 states and 17239 transitions. [2019-11-07 00:45:56,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:45:56,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-11-07 00:45:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:57,018 INFO L225 Difference]: With dead ends: 10376 [2019-11-07 00:45:57,018 INFO L226 Difference]: Without dead ends: 7750 [2019-11-07 00:45:57,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:45:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2019-11-07 00:45:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7676. [2019-11-07 00:45:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7676 states. [2019-11-07 00:45:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 12326 transitions. [2019-11-07 00:45:57,436 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 12326 transitions. Word has length 182 [2019-11-07 00:45:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:57,436 INFO L462 AbstractCegarLoop]: Abstraction has 7676 states and 12326 transitions. [2019-11-07 00:45:57,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:45:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 12326 transitions. [2019-11-07 00:45:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:45:57,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:57,447 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:57,448 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1009565604, now seen corresponding path program 1 times [2019-11-07 00:45:57,448 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:57,449 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553231625] [2019-11-07 00:45:57,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:45:57,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553231625] [2019-11-07 00:45:57,600 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:57,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:57,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147459862] [2019-11-07 00:45:57,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:57,601 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:57,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:57,601 INFO L87 Difference]: Start difference. First operand 7676 states and 12326 transitions. Second operand 6 states.