java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:20:00,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:20:00,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:20:00,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:20:00,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:20:00,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:20:00,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:20:00,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:20:00,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:20:00,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:20:00,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:20:00,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:20:00,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:20:00,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:20:00,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:20:00,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:20:00,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:20:00,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:20:00,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:20:00,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:20:00,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:20:00,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:20:00,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:20:00,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:20:00,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:20:00,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:20:00,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:20:00,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:20:00,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:20:00,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:20:00,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:20:00,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:20:00,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:20:00,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:20:00,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:20:00,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:20:00,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:20:00,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:20:00,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:20:00,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:20:00,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:20:00,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:20:00,942 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:20:00,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:20:00,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:20:00,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:20:00,944 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:20:00,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:20:00,944 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:20:00,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:20:00,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:20:00,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:20:00,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:20:00,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:20:00,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:20:00,946 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:20:00,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:20:00,946 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:20:00,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:20:00,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:20:00,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:20:00,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:20:00,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:20:00,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:00,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:20:00,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:20:00,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:20:00,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:20:00,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:20:00,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:20:00,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:20:01,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:20:01,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:20:01,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:20:01,259 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:20:01,260 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:20:01,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c [2019-10-14 23:20:01,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588657fc1/da17c72001ea4a70bdece02068012a67/FLAG8d7673d34 [2019-10-14 23:20:02,066 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:20:02,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c [2019-10-14 23:20:02,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588657fc1/da17c72001ea4a70bdece02068012a67/FLAG8d7673d34 [2019-10-14 23:20:02,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588657fc1/da17c72001ea4a70bdece02068012a67 [2019-10-14 23:20:02,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:20:02,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:20:02,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:02,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:20:02,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:20:02,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:02" (1/1) ... [2019-10-14 23:20:02,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b193a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:02, skipping insertion in model container [2019-10-14 23:20:02,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:02" (1/1) ... [2019-10-14 23:20:02,227 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:20:02,319 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:20:03,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:03,168 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:20:03,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:03,362 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:20:03,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03 WrapperNode [2019-10-14 23:20:03,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:03,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:20:03,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:20:03,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:20:03,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... [2019-10-14 23:20:03,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:20:03,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:20:03,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:20:03,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:20:03,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:20:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:20:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:20:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:20:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:20:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:20:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:20:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:20:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:20:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:20:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:20:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:20:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:20:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:20:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:20:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:20:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:20:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:20:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:20:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:20:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:20:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:20:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:20:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:20:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:20:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:20:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:20:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:20:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:20:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:20:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:20:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:20:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:20:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:20:03,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:20:03,689 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:20:03,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:20:03,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:20:03,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:20:03,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:20:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:20:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:20:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:20:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:20:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:20:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:20:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:20:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:20:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:20:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:20:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:20:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:20:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:20:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:20:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:20:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:20:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:20:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:20:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:20:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:20:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:20:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:20:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:20:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:20:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:20:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:20:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:20:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:20:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:20:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:20:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:20:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:20:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:20:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:20:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:20:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:20:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:20:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:20:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:20:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:20:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:20:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:20:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:20:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:20:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:20:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:20:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:20:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:20:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:20:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:20:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:20:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:20:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:20:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:20:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:20:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:20:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:20:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:20:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:20:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:06,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:06,498 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:06,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:06 BoogieIcfgContainer [2019-10-14 23:20:06,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:06,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:06,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:06,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:06,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:02" (1/3) ... [2019-10-14 23:20:06,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2e022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:06, skipping insertion in model container [2019-10-14 23:20:06,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:03" (2/3) ... [2019-10-14 23:20:06,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2e022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:06, skipping insertion in model container [2019-10-14 23:20:06,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:06" (3/3) ... [2019-10-14 23:20:06,511 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2019-10-14 23:20:06,523 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:06,538 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:06,551 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:06,598 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:06,598 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:06,599 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:06,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:06,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:06,599 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:06,599 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:06,599 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:06,654 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states. [2019-10-14 23:20:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:20:06,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:06,687 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:06,690 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2036682546, now seen corresponding path program 1 times [2019-10-14 23:20:06,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:06,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951200482] [2019-10-14 23:20:06,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:06,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:06,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,438 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,777 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,982 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:09,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951200482] [2019-10-14 23:20:09,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122808361] [2019-10-14 23:20:09,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:09,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:20:10,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:10,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-14 23:20:10,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503517466] [2019-10-14 23:20:10,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:10,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:10,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:10,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:20:10,066 INFO L87 Difference]: Start difference. First operand 818 states. Second operand 2 states. [2019-10-14 23:20:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:10,193 INFO L93 Difference]: Finished difference Result 694 states and 1094 transitions. [2019-10-14 23:20:10,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:10,195 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-14 23:20:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:10,239 INFO L225 Difference]: With dead ends: 694 [2019-10-14 23:20:10,239 INFO L226 Difference]: Without dead ends: 657 [2019-10-14 23:20:10,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:20:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-14 23:20:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-14 23:20:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-14 23:20:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1039 transitions. [2019-10-14 23:20:10,397 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1039 transitions. Word has length 116 [2019-10-14 23:20:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:10,400 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1039 transitions. [2019-10-14 23:20:10,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1039 transitions. [2019-10-14 23:20:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-14 23:20:10,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:10,412 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:10,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:10,620 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash -778540699, now seen corresponding path program 1 times [2019-10-14 23:20:10,621 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:10,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125830137] [2019-10-14 23:20:10,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:10,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:10,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,783 WARN L191 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,050 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,258 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:12,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125830137] [2019-10-14 23:20:12,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004481324] [2019-10-14 23:20:12,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:13,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:13,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:13,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:13,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394584819] [2019-10-14 23:20:13,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:13,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:13,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:13,314 INFO L87 Difference]: Start difference. First operand 657 states and 1039 transitions. Second operand 4 states. [2019-10-14 23:20:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:13,431 INFO L93 Difference]: Finished difference Result 1286 states and 2051 transitions. [2019-10-14 23:20:13,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:13,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-14 23:20:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:13,437 INFO L225 Difference]: With dead ends: 1286 [2019-10-14 23:20:13,437 INFO L226 Difference]: Without dead ends: 657 [2019-10-14 23:20:13,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-14 23:20:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-14 23:20:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-14 23:20:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1038 transitions. [2019-10-14 23:20:13,477 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1038 transitions. Word has length 118 [2019-10-14 23:20:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:13,477 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1038 transitions. [2019-10-14 23:20:13,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1038 transitions. [2019-10-14 23:20:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:20:13,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:13,480 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:13,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:13,688 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:13,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1816210495, now seen corresponding path program 1 times [2019-10-14 23:20:13,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:13,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049176037] [2019-10-14 23:20:13,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:13,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:13,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,743 WARN L191 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,006 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,172 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:15,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049176037] [2019-10-14 23:20:15,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643990228] [2019-10-14 23:20:15,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:16,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:16,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:16,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:16,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923087968] [2019-10-14 23:20:16,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:16,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:16,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:16,141 INFO L87 Difference]: Start difference. First operand 657 states and 1038 transitions. Second operand 4 states. [2019-10-14 23:20:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:16,235 INFO L93 Difference]: Finished difference Result 1286 states and 2049 transitions. [2019-10-14 23:20:16,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:16,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-14 23:20:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:16,241 INFO L225 Difference]: With dead ends: 1286 [2019-10-14 23:20:16,242 INFO L226 Difference]: Without dead ends: 657 [2019-10-14 23:20:16,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-14 23:20:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-14 23:20:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-14 23:20:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1037 transitions. [2019-10-14 23:20:16,274 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1037 transitions. Word has length 120 [2019-10-14 23:20:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:16,275 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1037 transitions. [2019-10-14 23:20:16,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1037 transitions. [2019-10-14 23:20:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:20:16,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:16,277 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:16,494 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:16,495 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:16,495 INFO L82 PathProgramCache]: Analyzing trace with hash 920540717, now seen corresponding path program 1 times [2019-10-14 23:20:16,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:16,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142547849] [2019-10-14 23:20:16,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:16,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:16,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,519 WARN L191 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,843 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,001 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:18,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142547849] [2019-10-14 23:20:18,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667634238] [2019-10-14 23:20:18,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:18,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:18,911 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:18,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:18,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536106009] [2019-10-14 23:20:18,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:18,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:18,916 INFO L87 Difference]: Start difference. First operand 657 states and 1037 transitions. Second operand 4 states. [2019-10-14 23:20:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:19,032 INFO L93 Difference]: Finished difference Result 1293 states and 2056 transitions. [2019-10-14 23:20:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:19,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-14 23:20:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:19,049 INFO L225 Difference]: With dead ends: 1293 [2019-10-14 23:20:19,049 INFO L226 Difference]: Without dead ends: 666 [2019-10-14 23:20:19,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-14 23:20:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-14 23:20:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-14 23:20:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1049 transitions. [2019-10-14 23:20:19,102 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1049 transitions. Word has length 122 [2019-10-14 23:20:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:19,103 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1049 transitions. [2019-10-14 23:20:19,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1049 transitions. [2019-10-14 23:20:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:20:19,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:19,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:19,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:19,321 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash 930906058, now seen corresponding path program 1 times [2019-10-14 23:20:19,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:19,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051905952] [2019-10-14 23:20:19,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:19,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:19,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,443 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,701 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,845 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:21,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051905952] [2019-10-14 23:20:21,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268489829] [2019-10-14 23:20:21,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:21,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:21,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:21,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:21,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092643694] [2019-10-14 23:20:21,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:21,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:21,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:21,770 INFO L87 Difference]: Start difference. First operand 666 states and 1049 transitions. Second operand 4 states. [2019-10-14 23:20:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:21,874 INFO L93 Difference]: Finished difference Result 1295 states and 2057 transitions. [2019-10-14 23:20:21,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:21,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-14 23:20:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:21,884 INFO L225 Difference]: With dead ends: 1295 [2019-10-14 23:20:21,885 INFO L226 Difference]: Without dead ends: 666 [2019-10-14 23:20:21,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-14 23:20:21,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-14 23:20:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-14 23:20:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1048 transitions. [2019-10-14 23:20:21,937 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1048 transitions. Word has length 123 [2019-10-14 23:20:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:21,938 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1048 transitions. [2019-10-14 23:20:21,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1048 transitions. [2019-10-14 23:20:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:20:21,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:21,943 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:22,152 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:22,152 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash -289235503, now seen corresponding path program 1 times [2019-10-14 23:20:22,153 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:22,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138683970] [2019-10-14 23:20:22,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:22,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:22,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,157 WARN L191 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,432 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,659 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:24,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138683970] [2019-10-14 23:20:24,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627589575] [2019-10-14 23:20:24,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:24,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:24,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:24,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:24,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688355010] [2019-10-14 23:20:24,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:24,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:24,658 INFO L87 Difference]: Start difference. First operand 666 states and 1048 transitions. Second operand 4 states. [2019-10-14 23:20:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:24,741 INFO L93 Difference]: Finished difference Result 1295 states and 2056 transitions. [2019-10-14 23:20:24,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:24,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-14 23:20:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:24,749 INFO L225 Difference]: With dead ends: 1295 [2019-10-14 23:20:24,749 INFO L226 Difference]: Without dead ends: 666 [2019-10-14 23:20:24,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-14 23:20:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-14 23:20:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-14 23:20:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1047 transitions. [2019-10-14 23:20:24,790 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1047 transitions. Word has length 124 [2019-10-14 23:20:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:24,792 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1047 transitions. [2019-10-14 23:20:24,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1047 transitions. [2019-10-14 23:20:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:20:24,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:24,797 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:25,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:25,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1000385362, now seen corresponding path program 1 times [2019-10-14 23:20:25,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:25,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977091727] [2019-10-14 23:20:25,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:25,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:25,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,998 WARN L191 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,312 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,484 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:20:27,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977091727] [2019-10-14 23:20:27,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319688593] [2019-10-14 23:20:27,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:27,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:27,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:27,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-14 23:20:27,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272125785] [2019-10-14 23:20:27,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:27,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:27,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:20:27,772 INFO L87 Difference]: Start difference. First operand 666 states and 1047 transitions. Second operand 4 states. [2019-10-14 23:20:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:27,945 INFO L93 Difference]: Finished difference Result 1294 states and 2056 transitions. [2019-10-14 23:20:27,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:27,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-14 23:20:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:27,951 INFO L225 Difference]: With dead ends: 1294 [2019-10-14 23:20:27,951 INFO L226 Difference]: Without dead ends: 666 [2019-10-14 23:20:27,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-14 23:20:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-14 23:20:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-14 23:20:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1042 transitions. [2019-10-14 23:20:27,979 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1042 transitions. Word has length 125 [2019-10-14 23:20:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:27,979 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1042 transitions. [2019-10-14 23:20:27,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1042 transitions. [2019-10-14 23:20:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:20:27,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:27,982 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:28,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:28,189 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash -494618178, now seen corresponding path program 1 times [2019-10-14 23:20:28,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:28,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924471382] [2019-10-14 23:20:28,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:28,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:28,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,353 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,673 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,869 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:20:30,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924471382] [2019-10-14 23:20:30,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448253538] [2019-10-14 23:20:30,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:30,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:31,054 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:31,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-14 23:20:31,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239782857] [2019-10-14 23:20:31,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:31,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:31,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:20:31,056 INFO L87 Difference]: Start difference. First operand 666 states and 1042 transitions. Second operand 4 states. [2019-10-14 23:20:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:31,243 INFO L93 Difference]: Finished difference Result 1294 states and 2046 transitions. [2019-10-14 23:20:31,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:31,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-14 23:20:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:31,250 INFO L225 Difference]: With dead ends: 1294 [2019-10-14 23:20:31,250 INFO L226 Difference]: Without dead ends: 666 [2019-10-14 23:20:31,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-14 23:20:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-14 23:20:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-14 23:20:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1037 transitions. [2019-10-14 23:20:31,287 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1037 transitions. Word has length 127 [2019-10-14 23:20:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:31,289 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1037 transitions. [2019-10-14 23:20:31,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1037 transitions. [2019-10-14 23:20:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 23:20:31,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:31,291 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:31,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:31,508 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash -856773916, now seen corresponding path program 1 times [2019-10-14 23:20:31,509 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:31,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419692996] [2019-10-14 23:20:31,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:31,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:31,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,647 WARN L191 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-14 23:20:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:32,912 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,100 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:20:33,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419692996] [2019-10-14 23:20:33,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515168840] [2019-10-14 23:20:33,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:34,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:34,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:34,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:34,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-14 23:20:34,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119177331] [2019-10-14 23:20:34,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:34,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:34,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:20:34,092 INFO L87 Difference]: Start difference. First operand 666 states and 1037 transitions. Second operand 4 states.