/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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:31:29,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:31:29,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:31:29,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:31:29,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:31:29,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:31:29,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:31:29,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:31:29,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:31:29,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:31:29,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:31:29,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:31:29,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:31:29,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:31:29,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:31:29,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:31:29,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:31:29,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:31:29,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:31:29,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:31:29,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:31:29,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:31:29,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:31:29,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:31:29,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:31:29,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:31:29,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:31:29,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:31:29,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:31:29,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:31:29,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:31:29,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:31:29,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:31:29,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:31:29,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:31:29,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:31:29,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:31:29,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:31:29,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:31:29,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:31:29,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:31:29,199 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 [2019-11-06 21:31:29,220 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:31:29,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:31:29,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:31:29,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:31:29,223 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:31:29,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:31:29,223 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:31:29,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:31:29,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:31:29,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:31:29,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:31:29,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:31:29,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:31:29,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:31:29,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:31:29,226 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:31:29,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:31:29,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:31:29,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:31:29,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:31:29,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:31:29,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:29,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:31:29,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:31:29,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:31:29,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:31:29,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:31:29,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:31:29,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:31:29,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:31:29,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:31:29,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:31:29,513 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:31:29,513 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:31:29,514 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-06 21:31:29,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2ac854/f55c60be27ee45c48173ac9fd6913d8a/FLAG20b9276b8 [2019-11-06 21:31:30,212 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:31:30,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-06 21:31:30,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2ac854/f55c60be27ee45c48173ac9fd6913d8a/FLAG20b9276b8 [2019-11-06 21:31:30,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da2ac854/f55c60be27ee45c48173ac9fd6913d8a [2019-11-06 21:31:30,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:31:30,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:31:30,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:30,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:31:30,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:31:30,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:30" (1/1) ... [2019-11-06 21:31:30,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cf09bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:30, skipping insertion in model container [2019-11-06 21:31:30,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:30" (1/1) ... [2019-11-06 21:31:30,511 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:31:30,576 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:31:31,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:31,364 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:31:31,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:31,559 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:31:31,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31 WrapperNode [2019-11-06 21:31:31,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:31,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:31:31,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:31:31,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:31:31,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (1/1) ... [2019-11-06 21:31:31,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:31:31,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:31:31,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:31:31,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:31:31,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (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 [2019-11-06 21:31:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:31:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:31:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:31:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:31:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:31:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:31:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:31:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:31:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:31:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:31:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:31:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:31:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:31:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:31:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:31:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:31:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:31:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:31:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:31:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:31:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:31:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:31:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:31:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:31:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:31:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:31:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:31:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:31:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:31:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:31:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-06 21:31:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:31:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:31:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:31:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:31:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:31:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:31:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:31:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:31:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:31:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:31:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:31:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:31:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:31:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:31:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:31:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:31:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:31:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:31:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:31:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:31:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:31:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:31:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:31:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:31:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:31:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:31:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:31:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:31:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:31:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:31:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:31:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:31:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:31:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:31:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:31:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:31:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:31:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:31:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-06 21:31:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:31:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:31:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:31:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:31:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:31:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:31:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:31:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:31:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:31:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:31:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:31:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:31:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:31:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:31:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:31:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:31:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:31:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:31:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:31:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:31:34,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:31:34,553 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:31:34,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:34 BoogieIcfgContainer [2019-11-06 21:31:34,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:31:34,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:31:34,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:31:34,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:31:34,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:31:30" (1/3) ... [2019-11-06 21:31:34,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d38e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:34, skipping insertion in model container [2019-11-06 21:31:34,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:31" (2/3) ... [2019-11-06 21:31:34,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d38e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:34, skipping insertion in model container [2019-11-06 21:31:34,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:34" (3/3) ... [2019-11-06 21:31:34,566 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2019-11-06 21:31:34,578 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:31:34,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:31:34,604 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:31:34,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:31:34,647 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:31:34,647 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:31:34,647 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:31:34,647 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:31:34,647 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:31:34,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:31:34,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:31:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states. [2019-11-06 21:31:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:31:34,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:34,721 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:34,724 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:34,731 INFO L82 PathProgramCache]: Analyzing trace with hash 56445338, now seen corresponding path program 1 times [2019-11-06 21:31:34,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:34,742 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382114013] [2019-11-06 21:31:34,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,362 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,690 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,917 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:37,212 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382114013] [2019-11-06 21:31:37,213 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126316565] [2019-11-06 21:31:37,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:31:37,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:31:37,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:37,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-11-06 21:31:37,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51103136] [2019-11-06 21:31:37,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:31:37,888 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:37,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:31:37,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:37,904 INFO L87 Difference]: Start difference. First operand 834 states. Second operand 2 states. [2019-11-06 21:31:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:37,990 INFO L93 Difference]: Finished difference Result 710 states and 1117 transitions. [2019-11-06 21:31:37,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:31:37,992 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-11-06 21:31:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:38,032 INFO L225 Difference]: With dead ends: 710 [2019-11-06 21:31:38,032 INFO L226 Difference]: Without dead ends: 673 [2019-11-06 21:31:38,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-11-06 21:31:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-11-06 21:31:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-11-06 21:31:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1062 transitions. [2019-11-06 21:31:38,163 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1062 transitions. Word has length 116 [2019-11-06 21:31:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:38,166 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1062 transitions. [2019-11-06 21:31:38,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:31:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1062 transitions. [2019-11-06 21:31:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:31:38,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:38,176 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:38,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:38,378 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:38,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1775152457, now seen corresponding path program 1 times [2019-11-06 21:31:38,379 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:38,380 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121982258] [2019-11-06 21:31:38,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,474 WARN L191 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,774 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,051 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:40,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121982258] [2019-11-06 21:31:40,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565815975] [2019-11-06 21:31:40,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:40,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:41,063 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:41,063 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:41,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530092974] [2019-11-06 21:31:41,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:41,065 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:41,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:41,065 INFO L87 Difference]: Start difference. First operand 673 states and 1062 transitions. Second operand 4 states. [2019-11-06 21:31:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:41,192 INFO L93 Difference]: Finished difference Result 1318 states and 2097 transitions. [2019-11-06 21:31:41,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:41,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:31:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:41,200 INFO L225 Difference]: With dead ends: 1318 [2019-11-06 21:31:41,202 INFO L226 Difference]: Without dead ends: 673 [2019-11-06 21:31:41,212 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-11-06 21:31:41,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-11-06 21:31:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-11-06 21:31:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1061 transitions. [2019-11-06 21:31:41,265 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1061 transitions. Word has length 118 [2019-11-06 21:31:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:41,266 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1061 transitions. [2019-11-06 21:31:41,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1061 transitions. [2019-11-06 21:31:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 21:31:41,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:41,269 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:41,476 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:41,477 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1168672533, now seen corresponding path program 1 times [2019-11-06 21:31:41,478 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:41,478 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999461301] [2019-11-06 21:31:41,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,407 WARN L191 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,724 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,929 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:43,172 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999461301] [2019-11-06 21:31:43,172 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892467667] [2019-11-06 21:31:43,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:43,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:43,752 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:43,752 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:43,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534474734] [2019-11-06 21:31:43,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:43,753 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:43,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:43,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:43,754 INFO L87 Difference]: Start difference. First operand 673 states and 1061 transitions. Second operand 4 states. [2019-11-06 21:31:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:43,854 INFO L93 Difference]: Finished difference Result 1318 states and 2095 transitions. [2019-11-06 21:31:43,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:43,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-06 21:31:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:43,861 INFO L225 Difference]: With dead ends: 1318 [2019-11-06 21:31:43,862 INFO L226 Difference]: Without dead ends: 673 [2019-11-06 21:31:43,865 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-11-06 21:31:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-11-06 21:31:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-11-06 21:31:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1060 transitions. [2019-11-06 21:31:43,897 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1060 transitions. Word has length 120 [2019-11-06 21:31:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:43,897 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1060 transitions. [2019-11-06 21:31:43,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1060 transitions. [2019-11-06 21:31:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:31:43,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:43,901 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:44,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:44,116 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2048084753, now seen corresponding path program 1 times [2019-11-06 21:31:44,116 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:44,116 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33366702] [2019-11-06 21:31:44,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,110 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,416 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,572 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:45,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33366702] [2019-11-06 21:31:45,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080281951] [2019-11-06 21:31:45,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:46,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:46,470 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:46,470 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:46,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763972044] [2019-11-06 21:31:46,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:46,471 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:46,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:46,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:46,472 INFO L87 Difference]: Start difference. First operand 673 states and 1060 transitions. Second operand 4 states. [2019-11-06 21:31:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:46,568 INFO L93 Difference]: Finished difference Result 1325 states and 2102 transitions. [2019-11-06 21:31:46,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:46,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:31:46,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:46,573 INFO L225 Difference]: With dead ends: 1325 [2019-11-06 21:31:46,574 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 21:31:46,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 21:31:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 21:31:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 21:31:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1072 transitions. [2019-11-06 21:31:46,601 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1072 transitions. Word has length 122 [2019-11-06 21:31:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:46,601 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1072 transitions. [2019-11-06 21:31:46,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1072 transitions. [2019-11-06 21:31:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:31:46,603 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:46,603 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:46,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:46,819 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash -712971393, now seen corresponding path program 1 times [2019-11-06 21:31:46,821 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:46,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922868413] [2019-11-06 21:31:46,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,847 WARN L191 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,137 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,292 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:48,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922868413] [2019-11-06 21:31:48,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891531866] [2019-11-06 21:31:48,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:49,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:49,220 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:49,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:49,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122396336] [2019-11-06 21:31:49,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:49,225 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:49,225 INFO L87 Difference]: Start difference. First operand 682 states and 1072 transitions. Second operand 4 states. [2019-11-06 21:31:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:49,314 INFO L93 Difference]: Finished difference Result 1327 states and 2103 transitions. [2019-11-06 21:31:49,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:49,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:31:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:49,327 INFO L225 Difference]: With dead ends: 1327 [2019-11-06 21:31:49,327 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 21:31:49,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 21:31:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 21:31:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 21:31:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1071 transitions. [2019-11-06 21:31:49,353 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1071 transitions. Word has length 123 [2019-11-06 21:31:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:49,354 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1071 transitions. [2019-11-06 21:31:49,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1071 transitions. [2019-11-06 21:31:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:31:49,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:49,358 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:49,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:49,571 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:49,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1947833131, now seen corresponding path program 1 times [2019-11-06 21:31:49,572 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:49,572 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688502514] [2019-11-06 21:31:49,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,774 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,140 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,380 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:51,670 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688502514] [2019-11-06 21:31:51,670 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300949482] [2019-11-06 21:31:51,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:52,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:52,322 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:52,322 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:52,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466623888] [2019-11-06 21:31:52,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:52,326 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:52,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:52,327 INFO L87 Difference]: Start difference. First operand 682 states and 1071 transitions. Second operand 4 states. [2019-11-06 21:31:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:52,427 INFO L93 Difference]: Finished difference Result 1327 states and 2102 transitions. [2019-11-06 21:31:52,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:52,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:31:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:52,438 INFO L225 Difference]: With dead ends: 1327 [2019-11-06 21:31:52,438 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 21:31:52,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 21:31:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 21:31:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 21:31:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1070 transitions. [2019-11-06 21:31:52,489 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1070 transitions. Word has length 124 [2019-11-06 21:31:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:52,491 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1070 transitions. [2019-11-06 21:31:52,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1070 transitions. [2019-11-06 21:31:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:31:52,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:52,496 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:52,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:52,707 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:52,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1179658819, now seen corresponding path program 1 times [2019-11-06 21:31:52,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:52,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346968225] [2019-11-06 21:31:52,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,747 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,056 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,244 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:54,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346968225] [2019-11-06 21:31:54,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382223803] [2019-11-06 21:31:54,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:55,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:55,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:55,543 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:55,544 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:31:55,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800493226] [2019-11-06 21:31:55,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:55,547 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:55,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:55,548 INFO L87 Difference]: Start difference. First operand 682 states and 1070 transitions. Second operand 4 states. [2019-11-06 21:31:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:55,729 INFO L93 Difference]: Finished difference Result 1326 states and 2102 transitions. [2019-11-06 21:31:55,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:55,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-06 21:31:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:55,735 INFO L225 Difference]: With dead ends: 1326 [2019-11-06 21:31:55,736 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 21:31:55,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:55,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 21:31:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 21:31:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 21:31:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1065 transitions. [2019-11-06 21:31:55,761 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1065 transitions. Word has length 125 [2019-11-06 21:31:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:55,761 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1065 transitions. [2019-11-06 21:31:55,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1065 transitions. [2019-11-06 21:31:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-06 21:31:55,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:55,763 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:55,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:55,970 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1513989099, now seen corresponding path program 1 times [2019-11-06 21:31:55,971 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:55,971 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808036919] [2019-11-06 21:31:55,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,116 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,474 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,642 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:57,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808036919] [2019-11-06 21:31:57,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333686724] [2019-11-06 21:31:57,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:58,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:58,678 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:58,678 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:31:58,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4376765] [2019-11-06 21:31:58,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:58,680 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:58,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:58,681 INFO L87 Difference]: Start difference. First operand 682 states and 1065 transitions. Second operand 4 states. [2019-11-06 21:31:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:58,830 INFO L93 Difference]: Finished difference Result 1326 states and 2092 transitions. [2019-11-06 21:31:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:58,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-06 21:31:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:58,835 INFO L225 Difference]: With dead ends: 1326 [2019-11-06 21:31:58,835 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 21:31:58,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 21:31:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 21:31:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 21:31:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1060 transitions. [2019-11-06 21:31:58,860 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1060 transitions. Word has length 127 [2019-11-06 21:31:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:58,861 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1060 transitions. [2019-11-06 21:31:58,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1060 transitions. [2019-11-06 21:31:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-06 21:31:58,863 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:58,863 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:59,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:59,078 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:59,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1252577017, now seen corresponding path program 1 times [2019-11-06 21:31:59,079 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:59,079 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518666463] [2019-11-06 21:31:59,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,053 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:32:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,338 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:32:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,501 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:32:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:32:00,901 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518666463] [2019-11-06 21:32:00,901 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001937399] [2019-11-06 21:32:00,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:32:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:01,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:32:01,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:32:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:32:01,728 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:32:01,728 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:32:01,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747590566] [2019-11-06 21:32:01,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:32:01,729 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:32:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:32:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:32:01,730 INFO L87 Difference]: Start difference. First operand 682 states and 1060 transitions. Second operand 4 states. [2019-11-06 21:32:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:32:01,943 INFO L93 Difference]: Finished difference Result 1362 states and 2141 transitions. [2019-11-06 21:32:01,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:32:01,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-11-06 21:32:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:32:01,949 INFO L225 Difference]: With dead ends: 1362 [2019-11-06 21:32:01,949 INFO L226 Difference]: Without dead ends: 721 [2019-11-06 21:32:01,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:32:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-11-06 21:32:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2019-11-06 21:32:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-11-06 21:32:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1124 transitions. [2019-11-06 21:32:01,974 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1124 transitions. Word has length 129 [2019-11-06 21:32:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:32:01,974 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1124 transitions. [2019-11-06 21:32:01,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:32:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1124 transitions. [2019-11-06 21:32:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:32:01,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:32:01,977 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:32:02,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:32:02,184 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:32:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:32:02,185 INFO L82 PathProgramCache]: Analyzing trace with hash -402045729, now seen corresponding path program 1 times [2019-11-06 21:32:02,185 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:32:02,185 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710559953] [2019-11-06 21:32:02,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:32:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,129 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:32:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,421 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:32:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:32:03,604 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:32:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat