java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:21:30,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:21:30,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:21:30,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:21:30,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:21:30,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:21:30,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:21:30,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:21:30,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:21:30,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:21:30,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:21:30,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:21:30,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:21:30,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:21:30,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:21:30,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:21:30,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:21:30,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:21:30,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:21:30,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:21:30,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:21:30,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:21:30,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:21:30,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:21:30,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:21:30,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:21:30,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:21:30,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:21:30,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:21:30,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:21:30,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:21:30,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:21:30,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:21:30,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:21:30,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:21:30,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:21:30,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:21:30,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:21:30,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:21:30,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:21:30,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:21:30,922 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 [2019-10-13 19:21:30,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:21:30,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:21:30,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:21:30,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:21:30,938 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:21:30,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:21:30,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:21:30,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:21:30,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:21:30,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:21:30,940 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:21:30,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:21:30,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:21:30,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:21:30,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:21:30,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:21:30,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:30,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:21:30,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:21:30,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:21:30,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:21:30,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:21:30,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:21:30,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:21:31,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:21:31,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:21:31,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:21:31,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:21:31,241 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:21:31,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-10-13 19:21:31,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d2714fe/946faf841b6b40e4a7f07ec007747600/FLAG8d499a499 [2019-10-13 19:21:32,026 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:21:32,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-10-13 19:21:32,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d2714fe/946faf841b6b40e4a7f07ec007747600/FLAG8d499a499 [2019-10-13 19:21:32,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d2714fe/946faf841b6b40e4a7f07ec007747600 [2019-10-13 19:21:32,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:21:32,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:21:32,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:32,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:21:32,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:21:32,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32, skipping insertion in model container [2019-10-13 19:21:32,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,221 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:21:32,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:21:33,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:33,041 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:21:33,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:33,295 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:21:33,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33 WrapperNode [2019-10-13 19:21:33,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:33,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:21:33,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:21:33,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:21:33,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (1/1) ... [2019-10-13 19:21:33,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:21:33,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:21:33,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:21:33,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:21:33,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (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 [2019-10-13 19:21:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:21:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:21:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:21:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:21:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:21:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:21:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:21:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:21:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:21:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:21:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:21:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:21:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:21:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:21:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:21:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:21:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:21:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:21:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:21:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:21:33,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:21:33,613 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:21:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:21:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:21:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:21:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:21:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:21:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 19:21:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:21:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 19:21:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:21:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:21:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:21:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:21:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:21:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:21:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:21:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:21:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:21:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:21:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:21:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:21:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:21:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:21:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:21:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:21:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:21:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:21:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:21:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:21:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:21:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:21:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:21:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:21:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:21:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:21:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:21:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:21:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:21:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:21:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:21:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 19:21:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 19:21:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:21:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:21:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:21:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:21:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:21:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:21:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:21:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:21:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:21:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:21:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:21:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:21:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:21:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:21:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:21:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:36,115 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:36,115 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:36,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:36 BoogieIcfgContainer [2019-10-13 19:21:36,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:36,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:36,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:36,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:21:32" (1/3) ... [2019-10-13 19:21:36,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158d8a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:36, skipping insertion in model container [2019-10-13 19:21:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:33" (2/3) ... [2019-10-13 19:21:36,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158d8a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:36, skipping insertion in model container [2019-10-13 19:21:36,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:36" (3/3) ... [2019-10-13 19:21:36,127 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2019-10-13 19:21:36,137 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:36,147 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:36,158 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:36,191 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:36,191 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:36,191 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:36,191 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:36,191 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:36,191 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:36,191 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:36,192 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states. [2019-10-13 19:21:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:21:36,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:36,248 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] [2019-10-13 19:21:36,250 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:36,258 INFO L82 PathProgramCache]: Analyzing trace with hash 56445338, now seen corresponding path program 1 times [2019-10-13 19:21:36,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:36,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858735327] [2019-10-13 19:21:36,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:36,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:36,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,972 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,268 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,473 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:38,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858735327] [2019-10-13 19:21:38,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134392591] [2019-10-13 19:21:38,885 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 [2019-10-13 19:21:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:39,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:39,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:39,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:39,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:39,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721148990] [2019-10-13 19:21:39,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:39,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:39,640 INFO L87 Difference]: Start difference. First operand 834 states. Second operand 2 states. [2019-10-13 19:21:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:39,725 INFO L93 Difference]: Finished difference Result 710 states and 1117 transitions. [2019-10-13 19:21:39,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:39,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:39,756 INFO L225 Difference]: With dead ends: 710 [2019-10-13 19:21:39,757 INFO L226 Difference]: Without dead ends: 673 [2019-10-13 19:21:39,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-10-13 19:21:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-10-13 19:21:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-10-13 19:21:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1062 transitions. [2019-10-13 19:21:39,892 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1062 transitions. Word has length 116 [2019-10-13 19:21:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:39,899 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1062 transitions. [2019-10-13 19:21:39,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1062 transitions. [2019-10-13 19:21:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:39,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:39,909 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] [2019-10-13 19:21:40,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:40,123 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1775152457, now seen corresponding path program 1 times [2019-10-13 19:21:40,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:40,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668030503] [2019-10-13 19:21:40,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:40,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:40,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,376 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,643 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,809 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:42,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668030503] [2019-10-13 19:21:42,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495360280] [2019-10-13 19:21:42,181 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 [2019-10-13 19:21:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:42,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:42,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:42,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:42,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:42,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195020006] [2019-10-13 19:21:42,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:42,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:42,768 INFO L87 Difference]: Start difference. First operand 673 states and 1062 transitions. Second operand 4 states. [2019-10-13 19:21:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:43,021 INFO L93 Difference]: Finished difference Result 1318 states and 2097 transitions. [2019-10-13 19:21:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:43,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:43,031 INFO L225 Difference]: With dead ends: 1318 [2019-10-13 19:21:43,031 INFO L226 Difference]: Without dead ends: 673 [2019-10-13 19:21:43,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-10-13 19:21:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-10-13 19:21:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-10-13 19:21:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1061 transitions. [2019-10-13 19:21:43,104 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1061 transitions. Word has length 118 [2019-10-13 19:21:43,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:43,105 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1061 transitions. [2019-10-13 19:21:43,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:43,105 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1061 transitions. [2019-10-13 19:21:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:43,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:43,114 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] [2019-10-13 19:21:43,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:43,323 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1168672533, now seen corresponding path program 1 times [2019-10-13 19:21:43,324 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:43,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72674942] [2019-10-13 19:21:43,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:43,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:43,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,401 WARN L191 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,669 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,817 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:45,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72674942] [2019-10-13 19:21:45,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933410770] [2019-10-13 19:21:45,155 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 [2019-10-13 19:21:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:45,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:45,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:45,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:45,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884670883] [2019-10-13 19:21:45,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:45,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:45,756 INFO L87 Difference]: Start difference. First operand 673 states and 1061 transitions. Second operand 4 states. [2019-10-13 19:21:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:45,843 INFO L93 Difference]: Finished difference Result 1318 states and 2095 transitions. [2019-10-13 19:21:45,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:45,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:45,849 INFO L225 Difference]: With dead ends: 1318 [2019-10-13 19:21:45,849 INFO L226 Difference]: Without dead ends: 673 [2019-10-13 19:21:45,852 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 [2019-10-13 19:21:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-10-13 19:21:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-10-13 19:21:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-10-13 19:21:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1060 transitions. [2019-10-13 19:21:45,877 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1060 transitions. Word has length 120 [2019-10-13 19:21:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:45,877 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1060 transitions. [2019-10-13 19:21:45,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1060 transitions. [2019-10-13 19:21:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:45,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:45,880 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] [2019-10-13 19:21:46,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:46,088 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2048084753, now seen corresponding path program 1 times [2019-10-13 19:21:46,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:46,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282686654] [2019-10-13 19:21:46,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:46,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:46,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,103 WARN L191 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,370 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,521 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:47,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282686654] [2019-10-13 19:21:47,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603677765] [2019-10-13 19:21:47,778 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 [2019-10-13 19:21:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:48,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:48,424 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:48,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:48,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968932780] [2019-10-13 19:21:48,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:48,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:48,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:48,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:48,426 INFO L87 Difference]: Start difference. First operand 673 states and 1060 transitions. Second operand 4 states. [2019-10-13 19:21:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:48,521 INFO L93 Difference]: Finished difference Result 1325 states and 2102 transitions. [2019-10-13 19:21:48,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:48,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:48,527 INFO L225 Difference]: With dead ends: 1325 [2019-10-13 19:21:48,528 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:21:48,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:21:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:21:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:21:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1072 transitions. [2019-10-13 19:21:48,557 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1072 transitions. Word has length 122 [2019-10-13 19:21:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:48,558 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1072 transitions. [2019-10-13 19:21:48,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1072 transitions. [2019-10-13 19:21:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:48,561 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:48,561 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] [2019-10-13 19:21:48,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:48,776 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash -712971393, now seen corresponding path program 1 times [2019-10-13 19:21:48,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:48,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211000463] [2019-10-13 19:21:48,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:48,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:48,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,785 WARN L191 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,042 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,200 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:50,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211000463] [2019-10-13 19:21:50,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826848674] [2019-10-13 19:21:50,474 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 [2019-10-13 19:21:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:51,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:51,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:51,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:51,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152907318] [2019-10-13 19:21:51,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:51,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:51,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:51,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:51,054 INFO L87 Difference]: Start difference. First operand 682 states and 1072 transitions. Second operand 4 states. [2019-10-13 19:21:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:51,155 INFO L93 Difference]: Finished difference Result 1327 states and 2103 transitions. [2019-10-13 19:21:51,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:51,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:51,161 INFO L225 Difference]: With dead ends: 1327 [2019-10-13 19:21:51,161 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:21:51,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:21:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:21:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:21:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1071 transitions. [2019-10-13 19:21:51,187 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1071 transitions. Word has length 123 [2019-10-13 19:21:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:51,187 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1071 transitions. [2019-10-13 19:21:51,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1071 transitions. [2019-10-13 19:21:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:51,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:51,190 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] [2019-10-13 19:21:51,406 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:51,406 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1947833131, now seen corresponding path program 1 times [2019-10-13 19:21:51,407 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:51,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588372226] [2019-10-13 19:21:51,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:51,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:51,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,374 WARN L191 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,642 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,857 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:53,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588372226] [2019-10-13 19:21:53,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187862508] [2019-10-13 19:21:53,216 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 [2019-10-13 19:21:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:53,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:53,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:53,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:53,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:53,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421309502] [2019-10-13 19:21:53,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:53,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:53,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:53,843 INFO L87 Difference]: Start difference. First operand 682 states and 1071 transitions. Second operand 4 states. [2019-10-13 19:21:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:53,924 INFO L93 Difference]: Finished difference Result 1327 states and 2102 transitions. [2019-10-13 19:21:53,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:53,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:53,934 INFO L225 Difference]: With dead ends: 1327 [2019-10-13 19:21:53,934 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:21:53,940 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 [2019-10-13 19:21:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:21:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:21:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:21:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1070 transitions. [2019-10-13 19:21:53,967 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1070 transitions. Word has length 124 [2019-10-13 19:21:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:53,968 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1070 transitions. [2019-10-13 19:21:53,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1070 transitions. [2019-10-13 19:21:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:53,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:53,971 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] [2019-10-13 19:21:54,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:54,180 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:54,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1179658819, now seen corresponding path program 1 times [2019-10-13 19:21:54,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:54,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968492716] [2019-10-13 19:21:54,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:54,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:54,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,312 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,626 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,831 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:56,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968492716] [2019-10-13 19:21:56,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171055887] [2019-10-13 19:21:56,183 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 [2019-10-13 19:21:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:56,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:56,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:56,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:56,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:56,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906949817] [2019-10-13 19:21:56,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:56,909 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:56,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:56,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:56,910 INFO L87 Difference]: Start difference. First operand 682 states and 1070 transitions. Second operand 4 states. [2019-10-13 19:21:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:57,085 INFO L93 Difference]: Finished difference Result 1326 states and 2102 transitions. [2019-10-13 19:21:57,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:57,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 19:21:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:57,093 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 19:21:57,093 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:21:57,097 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:21:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:21:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:21:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1065 transitions. [2019-10-13 19:21:57,121 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1065 transitions. Word has length 125 [2019-10-13 19:21:57,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:57,121 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1065 transitions. [2019-10-13 19:21:57,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1065 transitions. [2019-10-13 19:21:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:21:57,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:57,125 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] [2019-10-13 19:21:57,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:57,334 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:57,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1513989099, now seen corresponding path program 1 times [2019-10-13 19:21:57,335 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:57,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253246180] [2019-10-13 19:21:57,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:57,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:57,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,291 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:21:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,574 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,765 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:59,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253246180] [2019-10-13 19:21:59,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213018024] [2019-10-13 19:21:59,140 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 [2019-10-13 19:21:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:59,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:59,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:59,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:59,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714039086] [2019-10-13 19:21:59,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:59,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:59,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:59,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:59,769 INFO L87 Difference]: Start difference. First operand 682 states and 1065 transitions. Second operand 4 states. [2019-10-13 19:21:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:59,941 INFO L93 Difference]: Finished difference Result 1326 states and 2092 transitions. [2019-10-13 19:21:59,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:59,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 19:21:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:59,947 INFO L225 Difference]: With dead ends: 1326 [2019-10-13 19:21:59,948 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:21:59,952 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:21:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:21:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:21:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1060 transitions. [2019-10-13 19:21:59,986 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1060 transitions. Word has length 127 [2019-10-13 19:21:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:59,987 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1060 transitions. [2019-10-13 19:21:59,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1060 transitions. [2019-10-13 19:21:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:21:59,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:59,989 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] [2019-10-13 19:22:00,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:22:00,205 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:22:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:22:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1252577017, now seen corresponding path program 1 times [2019-10-13 19:22:00,206 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:22:00,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569681848] [2019-10-13 19:22:00,207 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:00,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:00,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:22:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,159 WARN L191 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:22:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,446 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:22:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,624 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:22:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:22:01,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569681848] [2019-10-13 19:22:01,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434208927] [2019-10-13 19:22:01,932 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 [2019-10-13 19:22:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:02,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:22:02,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:22:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:22:02,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:22:02,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:22:02,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564979192] [2019-10-13 19:22:02,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:22:02,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:22:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:22:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:22:02,534 INFO L87 Difference]: Start difference. First operand 682 states and 1060 transitions. Second operand 4 states. [2019-10-13 19:22:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:22:02,820 INFO L93 Difference]: Finished difference Result 1362 states and 2141 transitions. [2019-10-13 19:22:02,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:22:02,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 19:22:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:22:02,828 INFO L225 Difference]: With dead ends: 1362 [2019-10-13 19:22:02,829 INFO L226 Difference]: Without dead ends: 721 [2019-10-13 19:22:02,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:22:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-10-13 19:22:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2019-10-13 19:22:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-10-13 19:22:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1124 transitions. [2019-10-13 19:22:02,866 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1124 transitions. Word has length 129 [2019-10-13 19:22:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:22:02,866 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1124 transitions. [2019-10-13 19:22:02,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:22:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1124 transitions. [2019-10-13 19:22:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:22:02,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:22:02,869 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:22:03,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:22:03,085 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:22:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:22:03,086 INFO L82 PathProgramCache]: Analyzing trace with hash -402045729, now seen corresponding path program 1 times [2019-10-13 19:22:03,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:22:03,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434848190] [2019-10-13 19:22:03,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:03,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:03,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:22:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,041 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-10-13 19:22:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,310 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:22:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,489 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:22:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:22:04,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434848190] [2019-10-13 19:22:04,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398217956] [2019-10-13 19:22:04,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:22:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:05,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 3191 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:22:05,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:22:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:22:05,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:22:05,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:22:05,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697566941] [2019-10-13 19:22:05,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:22:05,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:22:05,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:22:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:22:05,465 INFO L87 Difference]: Start difference. First operand 721 states and 1124 transitions. Second operand 4 states. [2019-10-13 19:22:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:22:05,658 INFO L93 Difference]: Finished difference Result 1365 states and 2144 transitions. [2019-10-13 19:22:05,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:22:05,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-13 19:22:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:22:05,664 INFO L225 Difference]: With dead ends: 1365 [2019-10-13 19:22:05,664 INFO L226 Difference]: Without dead ends: 721 [2019-10-13 19:22:05,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:22:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2019-10-13 19:22:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2019-10-13 19:22:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-10-13 19:22:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1119 transitions. [2019-10-13 19:22:05,692 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1119 transitions. Word has length 130 [2019-10-13 19:22:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:22:05,693 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1119 transitions. [2019-10-13 19:22:05,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:22:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1119 transitions. [2019-10-13 19:22:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:22:05,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:22:05,695 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:22:05,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:22:05,907 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:22:05,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:22:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1281147742, now seen corresponding path program 1 times [2019-10-13 19:22:05,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:22:05,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790021972] [2019-10-13 19:22:05,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:05,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:05,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:22:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat