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_spec13_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:45,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:45,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:45,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:45,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:45,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:45,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:45,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:45,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:45,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:45,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:45,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:45,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:45,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:45,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:45,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:45,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:45,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:45,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:45,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:45,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:45,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:45,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:45,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:45,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:45,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:45,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:45,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:45,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:45,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:45,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:45,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:45,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:45,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:45,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:45,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:45,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:45,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:45,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:45,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:45,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:45,854 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 23:18:45,870 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:45,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:45,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:45,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:45,873 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:45,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:45,873 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:45,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:45,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:45,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:45,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:45,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:45,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:45,875 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:45,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:45,875 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:45,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:45,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:45,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:45,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:45,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:45,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:45,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:45,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:45,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:45,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:45,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:45,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:45,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:46,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:46,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:46,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:46,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:46,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:46,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-14 23:18:46,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e8a19d7/2d130055e0d84929926ae4f3c1136909/FLAG7c3de5d89 [2019-10-14 23:18:46,895 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:46,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-14 23:18:46,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e8a19d7/2d130055e0d84929926ae4f3c1136909/FLAG7c3de5d89 [2019-10-14 23:18:47,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e8a19d7/2d130055e0d84929926ae4f3c1136909 [2019-10-14 23:18:47,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:47,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:47,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:47,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:47,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:47,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:47" (1/1) ... [2019-10-14 23:18:47,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443541bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:47, skipping insertion in model container [2019-10-14 23:18:47,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:47" (1/1) ... [2019-10-14 23:18:47,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:47,226 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:47,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:47,997 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:48,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:48,241 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:48,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48 WrapperNode [2019-10-14 23:18:48,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:48,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:48,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:48,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:48,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (1/1) ... [2019-10-14 23:18:48,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:48,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:48,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:48,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:48,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (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 23:18:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:18:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:48,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:18:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:18:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:18:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:48,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:18:48,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:18:48,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:18:48,540 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:18:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:18:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:18:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:18:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:18:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:18:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:18:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:18:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:18:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:18:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:18:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:18:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:18:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:18:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:18:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:18:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:18:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:18:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:18:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:18:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:18:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:18:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:18:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:18:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:18:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:18:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:18:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:18:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:18:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:18:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:18:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:18:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:18:48,552 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:18:48,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:18:48,552 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:18:48,552 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:18:48,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:18:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:18:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:18:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:18:48,556 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:18:48,556 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:18:48,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:18:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:18:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:18:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:18:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:18:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:18:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:18:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:18:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:18:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:18:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:18:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:18:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:18:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:18:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:18:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:18:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:18:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:18:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:18:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:18:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:18:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:18:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:18:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:18:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:18:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:18:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:18:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:18:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:18:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:18:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:18:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:18:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:18:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:18:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:18:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:18:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:18:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:18:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:18:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:18:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:18:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:18:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:18:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:18:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:18:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:18:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:18:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:18:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:18:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:18:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:18:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:18:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:18:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:18:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:18:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:18:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:18:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:18:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:18:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:18:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:18:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:18:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:18:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:18:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:18:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:18:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:18:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:18:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:18:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:18:48,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:51,043 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:51,043 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:18:51,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:51 BoogieIcfgContainer [2019-10-14 23:18:51,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:51,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:51,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:51,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:47" (1/3) ... [2019-10-14 23:18:51,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19102ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:51, skipping insertion in model container [2019-10-14 23:18:51,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:48" (2/3) ... [2019-10-14 23:18:51,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19102ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:51, skipping insertion in model container [2019-10-14 23:18:51,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:51" (3/3) ... [2019-10-14 23:18:51,058 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2019-10-14 23:18:51,069 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:51,080 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:51,092 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:51,133 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:51,133 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:51,133 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:51,133 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:51,134 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:51,134 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:51,134 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:51,134 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states. [2019-10-14 23:18:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-14 23:18:51,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:51,232 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:51,235 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2055588152, now seen corresponding path program 1 times [2019-10-14 23:18:51,252 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:51,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214403477] [2019-10-14 23:18:51,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,916 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:18:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,174 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:18:53,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214403477] [2019-10-14 23:18:53,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715380292] [2019-10-14 23:18:53,615 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 23:18:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:18:54,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-14 23:18:54,301 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:54,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-10-14 23:18:54,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727804256] [2019-10-14 23:18:54,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:18:54,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:54,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:18:54,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:54,325 INFO L87 Difference]: Start difference. First operand 832 states. Second operand 2 states. [2019-10-14 23:18:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:54,494 INFO L93 Difference]: Finished difference Result 1357 states and 2183 transitions. [2019-10-14 23:18:54,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:18:54,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 161 [2019-10-14 23:18:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:54,531 INFO L225 Difference]: With dead ends: 1357 [2019-10-14 23:18:54,531 INFO L226 Difference]: Without dead ends: 686 [2019-10-14 23:18:54,547 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-14 23:18:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2019-10-14 23:18:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-14 23:18:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1083 transitions. [2019-10-14 23:18:54,686 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1083 transitions. Word has length 161 [2019-10-14 23:18:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:54,689 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1083 transitions. [2019-10-14 23:18:54,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:18:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1083 transitions. [2019-10-14 23:18:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-14 23:18:54,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:54,698 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:54,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:54,908 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1248623512, now seen corresponding path program 1 times [2019-10-14 23:18:54,909 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:54,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173099931] [2019-10-14 23:18:54,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:54,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:54,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,006 WARN L191 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:18:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:18:56,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173099931] [2019-10-14 23:18:56,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708828233] [2019-10-14 23:18:56,560 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 23:18:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:57,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-14 23:18:57,191 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:57,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-14 23:18:57,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876675466] [2019-10-14 23:18:57,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:57,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:57,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:57,194 INFO L87 Difference]: Start difference. First operand 686 states and 1083 transitions. Second operand 4 states. [2019-10-14 23:18:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:57,346 INFO L93 Difference]: Finished difference Result 1355 states and 2156 transitions. [2019-10-14 23:18:57,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:57,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-14 23:18:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:57,353 INFO L225 Difference]: With dead ends: 1355 [2019-10-14 23:18:57,354 INFO L226 Difference]: Without dead ends: 695 [2019-10-14 23:18:57,358 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-14 23:18:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2019-10-14 23:18:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-14 23:18:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1097 transitions. [2019-10-14 23:18:57,396 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1097 transitions. Word has length 161 [2019-10-14 23:18:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:57,396 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1097 transitions. [2019-10-14 23:18:57,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1097 transitions. [2019-10-14 23:18:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-14 23:18:57,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:57,404 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:57,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:57,613 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:57,614 INFO L82 PathProgramCache]: Analyzing trace with hash -916200834, now seen corresponding path program 1 times [2019-10-14 23:18:57,614 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:57,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688105157] [2019-10-14 23:18:57,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:57,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:57,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,590 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:18:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-14 23:18:59,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688105157] [2019-10-14 23:18:59,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812287562] [2019-10-14 23:18:59,220 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 23:18:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:59,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:18:59,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:59,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-14 23:18:59,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252203853] [2019-10-14 23:18:59,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:59,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:59,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:59,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:59,847 INFO L87 Difference]: Start difference. First operand 695 states and 1097 transitions. Second operand 4 states. [2019-10-14 23:19:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:00,144 INFO L93 Difference]: Finished difference Result 1401 states and 2241 transitions. [2019-10-14 23:19:00,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:00,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-14 23:19:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:00,156 INFO L225 Difference]: With dead ends: 1401 [2019-10-14 23:19:00,156 INFO L226 Difference]: Without dead ends: 734 [2019-10-14 23:19:00,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:19:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-14 23:19:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-14 23:19:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-14 23:19:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1171 transitions. [2019-10-14 23:19:00,210 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1171 transitions. Word has length 163 [2019-10-14 23:19:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:00,211 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1171 transitions. [2019-10-14 23:19:00,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1171 transitions. [2019-10-14 23:19:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-14 23:19:00,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:00,219 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:00,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:00,428 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash -444482810, now seen corresponding path program 1 times [2019-10-14 23:19:00,429 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:00,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843259538] [2019-10-14 23:19:00,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,465 WARN L191 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-14 23:19:01,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843259538] [2019-10-14 23:19:01,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993257713] [2019-10-14 23:19:01,886 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 23:19:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:02,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:02,600 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:02,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-14 23:19:02,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208973261] [2019-10-14 23:19:02,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:02,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:19:02,603 INFO L87 Difference]: Start difference. First operand 734 states and 1171 transitions. Second operand 7 states. [2019-10-14 23:19:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:02,784 INFO L93 Difference]: Finished difference Result 1454 states and 2332 transitions. [2019-10-14 23:19:02,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:02,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-14 23:19:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:02,793 INFO L225 Difference]: With dead ends: 1454 [2019-10-14 23:19:02,793 INFO L226 Difference]: Without dead ends: 748 [2019-10-14 23:19:02,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:19:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-14 23:19:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 741. [2019-10-14 23:19:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-14 23:19:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1182 transitions. [2019-10-14 23:19:02,834 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1182 transitions. Word has length 165 [2019-10-14 23:19:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:02,834 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1182 transitions. [2019-10-14 23:19:02,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1182 transitions. [2019-10-14 23:19:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-14 23:19:02,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:02,842 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:03,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:03,051 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:03,052 INFO L82 PathProgramCache]: Analyzing trace with hash 762157303, now seen corresponding path program 1 times [2019-10-14 23:19:03,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:03,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112529209] [2019-10-14 23:19:03,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,133 WARN L191 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,281 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:04,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112529209] [2019-10-14 23:19:04,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727075374] [2019-10-14 23:19:04,566 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 23:19:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:05,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:19:05,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:05,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:19:05,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647733583] [2019-10-14 23:19:05,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:05,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:05,164 INFO L87 Difference]: Start difference. First operand 741 states and 1182 transitions. Second operand 4 states. [2019-10-14 23:19:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:05,271 INFO L93 Difference]: Finished difference Result 1467 states and 2352 transitions. [2019-10-14 23:19:05,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:05,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-14 23:19:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:05,278 INFO L225 Difference]: With dead ends: 1467 [2019-10-14 23:19:05,278 INFO L226 Difference]: Without dead ends: 752 [2019-10-14 23:19:05,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:19:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-14 23:19:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 750. [2019-10-14 23:19:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:19:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1190 transitions. [2019-10-14 23:19:05,324 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1190 transitions. Word has length 166 [2019-10-14 23:19:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:05,324 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1190 transitions. [2019-10-14 23:19:05,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1190 transitions. [2019-10-14 23:19:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-14 23:19:05,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:05,335 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:05,545 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:05,546 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash -32158381, now seen corresponding path program 1 times [2019-10-14 23:19:05,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:05,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502888216] [2019-10-14 23:19:05,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:05,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:05,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,665 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 23:19:07,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502888216] [2019-10-14 23:19:07,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038139158] [2019-10-14 23:19:07,078 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 23:19:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:07,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:07,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:07,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2019-10-14 23:19:07,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642397972] [2019-10-14 23:19:07,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:07,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:07,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:07,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:19:07,758 INFO L87 Difference]: Start difference. First operand 750 states and 1190 transitions. Second operand 7 states. [2019-10-14 23:19:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:07,905 INFO L93 Difference]: Finished difference Result 1471 states and 2346 transitions. [2019-10-14 23:19:07,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:07,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2019-10-14 23:19:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:07,912 INFO L225 Difference]: With dead ends: 1471 [2019-10-14 23:19:07,912 INFO L226 Difference]: Without dead ends: 762 [2019-10-14 23:19:07,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:19:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-10-14 23:19:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 750. [2019-10-14 23:19:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:19:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1190 transitions. [2019-10-14 23:19:07,945 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1190 transitions. Word has length 166 [2019-10-14 23:19:07,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:07,945 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1190 transitions. [2019-10-14 23:19:07,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1190 transitions. [2019-10-14 23:19:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-14 23:19:07,952 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:07,952 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:08,169 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:08,170 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1189046705, now seen corresponding path program 1 times [2019-10-14 23:19:08,171 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:08,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060589550] [2019-10-14 23:19:08,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:08,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:08,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,127 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,289 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:09,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060589550] [2019-10-14 23:19:09,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543435526] [2019-10-14 23:19:09,512 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 23:19:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:10,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 23:19:10,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:10,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:19:10,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254799425] [2019-10-14 23:19:10,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:10,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:10,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:10,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:10,089 INFO L87 Difference]: Start difference. First operand 750 states and 1190 transitions. Second operand 4 states. [2019-10-14 23:19:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:10,185 INFO L93 Difference]: Finished difference Result 1447 states and 2313 transitions. [2019-10-14 23:19:10,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:10,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-14 23:19:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:10,195 INFO L225 Difference]: With dead ends: 1447 [2019-10-14 23:19:10,195 INFO L226 Difference]: Without dead ends: 750 [2019-10-14 23:19:10,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:19:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-14 23:19:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-14 23:19:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:19:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1185 transitions. [2019-10-14 23:19:10,245 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1185 transitions. Word has length 169 [2019-10-14 23:19:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:10,246 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1185 transitions. [2019-10-14 23:19:10,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1185 transitions. [2019-10-14 23:19:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-14 23:19:10,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:10,252 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:10,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:10,462 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:10,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1058024854, now seen corresponding path program 1 times [2019-10-14 23:19:10,462 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:10,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584255082] [2019-10-14 23:19:10,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:10,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:10,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,399 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,543 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:11,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584255082] [2019-10-14 23:19:11,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975725308] [2019-10-14 23:19:11,735 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 23:19:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:12,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:19:12,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:12,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:19:12,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279171321] [2019-10-14 23:19:12,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:12,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:12,334 INFO L87 Difference]: Start difference. First operand 750 states and 1185 transitions. Second operand 4 states. [2019-10-14 23:19:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:12,609 INFO L93 Difference]: Finished difference Result 1443 states and 2304 transitions. [2019-10-14 23:19:12,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:12,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-14 23:19:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:12,619 INFO L225 Difference]: With dead ends: 1443 [2019-10-14 23:19:12,619 INFO L226 Difference]: Without dead ends: 792 [2019-10-14 23:19:12,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:19:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-14 23:19:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 789. [2019-10-14 23:19:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-14 23:19:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1258 transitions. [2019-10-14 23:19:12,662 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1258 transitions. Word has length 170 [2019-10-14 23:19:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:12,662 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1258 transitions. [2019-10-14 23:19:12,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1258 transitions. [2019-10-14 23:19:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-14 23:19:12,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:12,670 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:12,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:12,889 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:12,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2107428973, now seen corresponding path program 1 times [2019-10-14 23:19:12,890 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:12,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714043446] [2019-10-14 23:19:12,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:12,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:12,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,816 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,955 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:14,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714043446] [2019-10-14 23:19:14,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155471333] [2019-10-14 23:19:14,171 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 23:19:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:14,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 23:19:14,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:14,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-14 23:19:14,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127306860] [2019-10-14 23:19:14,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:14,837 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:14,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:14,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:14,838 INFO L87 Difference]: Start difference. First operand 789 states and 1258 transitions. Second operand 7 states. [2019-10-14 23:19:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:14,983 INFO L93 Difference]: Finished difference Result 1457 states and 2320 transitions. [2019-10-14 23:19:14,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:14,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2019-10-14 23:19:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:14,993 INFO L225 Difference]: With dead ends: 1457 [2019-10-14 23:19:14,994 INFO L226 Difference]: Without dead ends: 806 [2019-10-14 23:19:14,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:19:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2019-10-14 23:19:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 796. [2019-10-14 23:19:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-14 23:19:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1267 transitions. [2019-10-14 23:19:15,040 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1267 transitions. Word has length 171 [2019-10-14 23:19:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:15,041 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1267 transitions. [2019-10-14 23:19:15,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1267 transitions. [2019-10-14 23:19:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-14 23:19:15,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:15,049 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:15,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:15,258 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash 817653790, now seen corresponding path program 1 times [2019-10-14 23:19:15,258 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:15,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353967017] [2019-10-14 23:19:15,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:15,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:15,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,187 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:16,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353967017] [2019-10-14 23:19:16,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658719562] [2019-10-14 23:19:16,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:17,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 23:19:17,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:17,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:19:17,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692483898] [2019-10-14 23:19:17,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:17,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:17,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:17,174 INFO L87 Difference]: Start difference. First operand 796 states and 1267 transitions. Second operand 4 states. [2019-10-14 23:19:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:17,257 INFO L93 Difference]: Finished difference Result 1499 states and 2396 transitions. [2019-10-14 23:19:17,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:19:17,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-14 23:19:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:17,264 INFO L225 Difference]: With dead ends: 1499 [2019-10-14 23:19:17,265 INFO L226 Difference]: Without dead ends: 796 [2019-10-14 23:19:17,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:19:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2019-10-14 23:19:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2019-10-14 23:19:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-14 23:19:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1264 transitions. [2019-10-14 23:19:17,305 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1264 transitions. Word has length 172 [2019-10-14 23:19:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:17,306 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1264 transitions. [2019-10-14 23:19:17,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1264 transitions. [2019-10-14 23:19:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-14 23:19:17,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:17,313 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:17,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:17,530 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash 674320387, now seen corresponding path program 1 times [2019-10-14 23:19:17,531 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:17,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923518817] [2019-10-14 23:19:17,531 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:17,532 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:17,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,444 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:18,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923518817] [2019-10-14 23:19:18,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599971712] [2019-10-14 23:19:18,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:19:19,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-14 23:19:19,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:19,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-14 23:19:19,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738823651] [2019-10-14 23:19:19,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:19:19,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:19:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:19:19,374 INFO L87 Difference]: Start difference. First operand 796 states and 1264 transitions. Second operand 5 states. [2019-10-14 23:19:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:20,318 INFO L93 Difference]: Finished difference Result 1451 states and 2341 transitions. [2019-10-14 23:19:20,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:19:20,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-14 23:19:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:20,326 INFO L225 Difference]: With dead ends: 1451 [2019-10-14 23:19:20,327 INFO L226 Difference]: Without dead ends: 804 [2019-10-14 23:19:20,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-14 23:19:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2019-10-14 23:19:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2019-10-14 23:19:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1277 transitions. [2019-10-14 23:19:20,360 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1277 transitions. Word has length 174 [2019-10-14 23:19:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:20,360 INFO L462 AbstractCegarLoop]: Abstraction has 804 states and 1277 transitions. [2019-10-14 23:19:20,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:19:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1277 transitions. [2019-10-14 23:19:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-14 23:19:20,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:20,367 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:20,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:20,582 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1642697509, now seen corresponding path program 1 times [2019-10-14 23:19:20,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:20,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39925839] [2019-10-14 23:19:20,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:20,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:20,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,434 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-14 23:19:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat