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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:20:02,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:20:02,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:20:02,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:20:02,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:20:02,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:20:02,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:20:02,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:20:02,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:20:02,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:20:02,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:20:02,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:20:02,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:20:02,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:20:02,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:20:02,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:20:02,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:20:02,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:20:02,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:20:02,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:20:02,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:20:02,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:20:02,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:20:02,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:20:02,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:20:02,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:20:02,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:20:02,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:20:02,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:20:02,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:20:02,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:20:02,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:20:02,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:20:02,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:20:02,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:20:02,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:20:02,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:20:02,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:20:02,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:20:02,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:20:02,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:20:02,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:20:02,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:20:02,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:20:02,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:20:02,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:20:02,217 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:20:02,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:20:02,218 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:20:02,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:20:02,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:20:02,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:20:02,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:20:02,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:20:02,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:20:02,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:20:02,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:20:02,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:20:02,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:02,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:20:02,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:20:02,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:20:02,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:20:02,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:20:02,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:20:02,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:20:02,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:20:02,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:20:02,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:20:02,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:20:02,550 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:20:02,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-14 23:20:02,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea5a48a1/9540c7d8c1a4499ba07801364470d196/FLAG4f4e0f320 [2019-10-14 23:20:03,258 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:20:03,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-14 23:20:03,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea5a48a1/9540c7d8c1a4499ba07801364470d196/FLAG4f4e0f320 [2019-10-14 23:20:03,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ea5a48a1/9540c7d8c1a4499ba07801364470d196 [2019-10-14 23:20:03,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:20:03,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:20:03,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:03,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:20:03,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:20:03,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d449b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03, skipping insertion in model container [2019-10-14 23:20:03,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,452 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:20:03,540 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:20:04,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:04,286 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:20:04,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:04,491 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:20:04,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04 WrapperNode [2019-10-14 23:20:04,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:04,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:20:04,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:20:04,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:20:04,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... [2019-10-14 23:20:04,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:20:04,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:20:04,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:20:04,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:20:04,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:20:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:20:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:20:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:20:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:20:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:20:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:20:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:20:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:20:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:20:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:20:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:20:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:20:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:20:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:20:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:20:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:20:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:20:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:20:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:20:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:20:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:20:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:20:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:20:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:20:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:20:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:20:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:20:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:20:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:20:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:20:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:20:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:20:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:20:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:20:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:20:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:20:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:20:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:20:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:20:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:20:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:20:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:20:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:20:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:20:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:20:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:20:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:20:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:20:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:20:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:20:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:20:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:20:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:20:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:20:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:20:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:20:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:20:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:20:04,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:20:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:20:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:20:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:20:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:20:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:20:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:20:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:20:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:20:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:20:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:20:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:20:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:20:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:20:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:20:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:20:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:20:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:20:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:20:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:20:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:20:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:20:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:20:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:20:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:20:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:20:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:20:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:20:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:20:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:20:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:20:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:20:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:20:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:20:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:20:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:20:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:20:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:20:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:20:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:20:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:20:04,797 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:20:04,797 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:20:04,797 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:20:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:20:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:20:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:20:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:20:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:20:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:20:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:20:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-14 23:20:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:20:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:20:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:20:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:20:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:20:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:20:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:20:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:20:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:07,333 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:07,334 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:07,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:07 BoogieIcfgContainer [2019-10-14 23:20:07,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:07,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:07,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:07,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:07,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:03" (1/3) ... [2019-10-14 23:20:07,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a82954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:07, skipping insertion in model container [2019-10-14 23:20:07,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:04" (2/3) ... [2019-10-14 23:20:07,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a82954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:07, skipping insertion in model container [2019-10-14 23:20:07,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:07" (3/3) ... [2019-10-14 23:20:07,347 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2019-10-14 23:20:07,359 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:07,372 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:07,387 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:07,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:07,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:07,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:07,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:07,437 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:07,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:07,438 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:07,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states. [2019-10-14 23:20:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:20:07,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:07,532 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:07,535 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash 896830833, now seen corresponding path program 1 times [2019-10-14 23:20:07,553 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:07,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325696670] [2019-10-14 23:20:07,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:07,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:07,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,220 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,529 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,756 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:10,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325696670] [2019-10-14 23:20:10,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869975466] [2019-10-14 23:20:10,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:10,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:20:10,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:10,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-14 23:20:10,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596303249] [2019-10-14 23:20:10,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:10,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:10,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:10,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:10,937 INFO L87 Difference]: Start difference. First operand 759 states. Second operand 2 states. [2019-10-14 23:20:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:11,057 INFO L93 Difference]: Finished difference Result 642 states and 1025 transitions. [2019-10-14 23:20:11,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:11,061 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 138 [2019-10-14 23:20:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:11,099 INFO L225 Difference]: With dead ends: 642 [2019-10-14 23:20:11,099 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:20:11,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:20:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-14 23:20:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 970 transitions. [2019-10-14 23:20:11,224 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 970 transitions. Word has length 138 [2019-10-14 23:20:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:11,226 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 970 transitions. [2019-10-14 23:20:11,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 970 transitions. [2019-10-14 23:20:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-14 23:20:11,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:11,234 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:11,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:11,454 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:11,455 INFO L82 PathProgramCache]: Analyzing trace with hash 155958948, now seen corresponding path program 1 times [2019-10-14 23:20:11,455 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:11,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558887592] [2019-10-14 23:20:11,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:11,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:11,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,665 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,926 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,140 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:13,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558887592] [2019-10-14 23:20:13,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238468964] [2019-10-14 23:20:13,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:14,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:14,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:14,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:14,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176525620] [2019-10-14 23:20:14,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:14,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:14,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:14,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:14,241 INFO L87 Difference]: Start difference. First operand 605 states and 970 transitions. Second operand 4 states. [2019-10-14 23:20:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:14,346 INFO L93 Difference]: Finished difference Result 1182 states and 1913 transitions. [2019-10-14 23:20:14,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:14,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-14 23:20:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:14,353 INFO L225 Difference]: With dead ends: 1182 [2019-10-14 23:20:14,353 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:20:14,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:20:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-14 23:20:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 969 transitions. [2019-10-14 23:20:14,413 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 969 transitions. Word has length 140 [2019-10-14 23:20:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:14,415 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 969 transitions. [2019-10-14 23:20:14,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 969 transitions. [2019-10-14 23:20:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 23:20:14,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:14,426 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:14,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:14,633 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:14,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1824771190, now seen corresponding path program 1 times [2019-10-14 23:20:14,635 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:14,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948731205] [2019-10-14 23:20:14,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:14,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:14,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,580 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,907 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,068 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:16,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948731205] [2019-10-14 23:20:16,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351135866] [2019-10-14 23:20:16,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:16,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:17,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:17,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:17,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953157632] [2019-10-14 23:20:17,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:17,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:17,071 INFO L87 Difference]: Start difference. First operand 605 states and 969 transitions. Second operand 4 states. [2019-10-14 23:20:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:17,189 INFO L93 Difference]: Finished difference Result 1182 states and 1911 transitions. [2019-10-14 23:20:17,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:17,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-14 23:20:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:17,198 INFO L225 Difference]: With dead ends: 1182 [2019-10-14 23:20:17,199 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:20:17,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:20:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-14 23:20:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 968 transitions. [2019-10-14 23:20:17,253 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 968 transitions. Word has length 142 [2019-10-14 23:20:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:17,254 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 968 transitions. [2019-10-14 23:20:17,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 968 transitions. [2019-10-14 23:20:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:20:17,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:17,263 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:17,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:17,479 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:17,479 INFO L82 PathProgramCache]: Analyzing trace with hash 48166316, now seen corresponding path program 1 times [2019-10-14 23:20:17,480 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:17,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351545297] [2019-10-14 23:20:17,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:17,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:17,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,454 WARN L191 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,706 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,861 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:19,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351545297] [2019-10-14 23:20:19,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932285321] [2019-10-14 23:20:19,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:19,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:19,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:19,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:19,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909061939] [2019-10-14 23:20:19,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:19,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:19,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:19,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:19,846 INFO L87 Difference]: Start difference. First operand 605 states and 968 transitions. Second operand 4 states. [2019-10-14 23:20:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:19,945 INFO L93 Difference]: Finished difference Result 1189 states and 1918 transitions. [2019-10-14 23:20:19,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:19,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-14 23:20:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:19,952 INFO L225 Difference]: With dead ends: 1189 [2019-10-14 23:20:19,952 INFO L226 Difference]: Without dead ends: 614 [2019-10-14 23:20:19,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-14 23:20:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-14 23:20:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:20:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 980 transitions. [2019-10-14 23:20:19,993 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 980 transitions. Word has length 144 [2019-10-14 23:20:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:19,993 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 980 transitions. [2019-10-14 23:20:19,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 980 transitions. [2019-10-14 23:20:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:20:19,999 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:20,000 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:20,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:20,208 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1492609617, now seen corresponding path program 1 times [2019-10-14 23:20:20,209 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:20,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661906611] [2019-10-14 23:20:20,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:20,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:20,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,154 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,448 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,668 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:22,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661906611] [2019-10-14 23:20:22,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347662805] [2019-10-14 23:20:22,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 3212 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:22,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:22,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:22,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:22,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811204168] [2019-10-14 23:20:22,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:22,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:22,723 INFO L87 Difference]: Start difference. First operand 614 states and 980 transitions. Second operand 4 states. [2019-10-14 23:20:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:22,875 INFO L93 Difference]: Finished difference Result 1191 states and 1919 transitions. [2019-10-14 23:20:22,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:22,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-14 23:20:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:22,887 INFO L225 Difference]: With dead ends: 1191 [2019-10-14 23:20:22,887 INFO L226 Difference]: Without dead ends: 614 [2019-10-14 23:20:22,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-14 23:20:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-14 23:20:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:20:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 979 transitions. [2019-10-14 23:20:22,930 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 979 transitions. Word has length 145 [2019-10-14 23:20:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:22,931 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 979 transitions. [2019-10-14 23:20:22,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 979 transitions. [2019-10-14 23:20:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:20:22,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:22,939 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:23,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:23,158 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:23,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1011781872, now seen corresponding path program 1 times [2019-10-14 23:20:23,159 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:23,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993419950] [2019-10-14 23:20:23,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:23,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:23,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,236 WARN L191 SmtUtils]: Spent 947.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,544 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,703 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:25,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993419950] [2019-10-14 23:20:25,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606366714] [2019-10-14 23:20:25,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 3213 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:25,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:25,892 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:25,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:25,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433763401] [2019-10-14 23:20:25,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:25,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:25,894 INFO L87 Difference]: Start difference. First operand 614 states and 979 transitions. Second operand 4 states. [2019-10-14 23:20:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:25,980 INFO L93 Difference]: Finished difference Result 1191 states and 1918 transitions. [2019-10-14 23:20:25,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:25,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-14 23:20:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:25,986 INFO L225 Difference]: With dead ends: 1191 [2019-10-14 23:20:25,986 INFO L226 Difference]: Without dead ends: 614 [2019-10-14 23:20:25,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-14 23:20:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-14 23:20:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:20:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 978 transitions. [2019-10-14 23:20:26,019 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 978 transitions. Word has length 146 [2019-10-14 23:20:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:26,020 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 978 transitions. [2019-10-14 23:20:26,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 978 transitions. [2019-10-14 23:20:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:20:26,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:26,025 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:26,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:26,242 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2009217747, now seen corresponding path program 1 times [2019-10-14 23:20:26,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:26,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436928087] [2019-10-14 23:20:26,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,166 WARN L191 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,443 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,643 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:28,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436928087] [2019-10-14 23:20:28,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650165817] [2019-10-14 23:20:28,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:28,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:28,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:28,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-14 23:20:28,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550520080] [2019-10-14 23:20:28,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:28,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:20:28,790 INFO L87 Difference]: Start difference. First operand 614 states and 978 transitions. Second operand 4 states. [2019-10-14 23:20:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:28,982 INFO L93 Difference]: Finished difference Result 1190 states and 1918 transitions. [2019-10-14 23:20:28,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:28,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-14 23:20:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:28,989 INFO L225 Difference]: With dead ends: 1190 [2019-10-14 23:20:28,990 INFO L226 Difference]: Without dead ends: 614 [2019-10-14 23:20:28,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-14 23:20:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-14 23:20:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:20:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 973 transitions. [2019-10-14 23:20:29,021 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 973 transitions. Word has length 147 [2019-10-14 23:20:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:29,022 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 973 transitions. [2019-10-14 23:20:29,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 973 transitions. [2019-10-14 23:20:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:20:29,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:29,029 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:29,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:29,239 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:29,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1229116529, now seen corresponding path program 1 times [2019-10-14 23:20:29,240 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:29,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914588452] [2019-10-14 23:20:29,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:29,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:29,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,502 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,801 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,968 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:31,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914588452] [2019-10-14 23:20:31,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558052222] [2019-10-14 23:20:31,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:31,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:31,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:31,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-14 23:20:31,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227835779] [2019-10-14 23:20:31,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:31,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:31,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:31,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:20:31,973 INFO L87 Difference]: Start difference. First operand 614 states and 973 transitions. Second operand 4 states. [2019-10-14 23:20:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:32,152 INFO L93 Difference]: Finished difference Result 1190 states and 1908 transitions. [2019-10-14 23:20:32,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:32,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:20:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:32,161 INFO L225 Difference]: With dead ends: 1190 [2019-10-14 23:20:32,162 INFO L226 Difference]: Without dead ends: 614 [2019-10-14 23:20:32,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-14 23:20:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-14 23:20:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:20:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 968 transitions. [2019-10-14 23:20:32,197 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 968 transitions. Word has length 149 [2019-10-14 23:20:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:32,198 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 968 transitions. [2019-10-14 23:20:32,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 968 transitions. [2019-10-14 23:20:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:20:32,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:32,205 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:32,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:32,413 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash -569391607, now seen corresponding path program 1 times [2019-10-14 23:20:32,415 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:32,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559929040] [2019-10-14 23:20:32,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:32,415 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:32,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,306 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,593 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,767 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:34,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559929040] [2019-10-14 23:20:34,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171055887] [2019-10-14 23:20:34,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:34,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 3218 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:34,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:34,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:34,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-14 23:20:34,706 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906949817] [2019-10-14 23:20:34,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:34,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:20:34,708 INFO L87 Difference]: Start difference. First operand 614 states and 968 transitions. Second operand 4 states. [2019-10-14 23:20:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:34,975 INFO L93 Difference]: Finished difference Result 1226 states and 1957 transitions. [2019-10-14 23:20:34,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:34,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-14 23:20:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:34,984 INFO L225 Difference]: With dead ends: 1226 [2019-10-14 23:20:34,985 INFO L226 Difference]: Without dead ends: 653 [2019-10-14 23:20:34,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-10-14 23:20:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2019-10-14 23:20:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-14 23:20:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1032 transitions. [2019-10-14 23:20:35,022 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1032 transitions. Word has length 151 [2019-10-14 23:20:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:35,023 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 1032 transitions. [2019-10-14 23:20:35,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1032 transitions. [2019-10-14 23:20:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:20:35,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:35,028 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:35,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:35,232 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:35,232 INFO L82 PathProgramCache]: Analyzing trace with hash 562048214, now seen corresponding path program 1 times [2019-10-14 23:20:35,233 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:35,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831427075] [2019-10-14 23:20:35,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:35,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:35,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,180 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat