java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:44,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:44,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:44,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:44,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:44,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:44,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:44,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:44,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:44,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:44,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:44,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:44,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:44,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:44,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:44,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:44,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:44,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:44,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:44,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:44,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:44,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:44,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:44,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:44,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:44,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:44,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:44,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:44,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:44,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:44,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:44,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:44,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:44,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:44,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:44,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:44,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:44,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:44,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:44,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:44,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:44,746 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 19:19:44,760 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:44,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:44,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:44,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:44,762 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:44,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:44,762 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:44,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:44,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:44,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:44,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:44,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:44,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:44,764 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:44,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:44,764 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:44,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:44,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:44,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:44,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:44,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:44,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:44,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:44,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:45,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:45,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:45,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:45,087 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:45,087 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:45,088 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-13 19:19:45,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecd34719/797032c57abd43fc807176ae06587beb/FLAG9aafce522 [2019-10-13 19:19:45,897 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:45,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-13 19:19:45,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecd34719/797032c57abd43fc807176ae06587beb/FLAG9aafce522 [2019-10-13 19:19:46,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecd34719/797032c57abd43fc807176ae06587beb [2019-10-13 19:19:46,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:46,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:46,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:46,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:46,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:46,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:46" (1/1) ... [2019-10-13 19:19:46,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f6a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:46, skipping insertion in model container [2019-10-13 19:19:46,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:46" (1/1) ... [2019-10-13 19:19:46,109 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:46,202 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:46,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:46,975 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:47,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:47,189 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:47,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47 WrapperNode [2019-10-13 19:19:47,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:47,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:47,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:47,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:47,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (1/1) ... [2019-10-13 19:19:47,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:47,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:47,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:47,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:47,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (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 19:19:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:47,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:19:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:19:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:19:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:19:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:50,063 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:50,063 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:50,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:50 BoogieIcfgContainer [2019-10-13 19:19:50,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:50,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:50,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:50,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:50,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:46" (1/3) ... [2019-10-13 19:19:50,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b96a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:50, skipping insertion in model container [2019-10-13 19:19:50,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:47" (2/3) ... [2019-10-13 19:19:50,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b96a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:50, skipping insertion in model container [2019-10-13 19:19:50,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:50" (3/3) ... [2019-10-13 19:19:50,077 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2019-10-13 19:19:50,090 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:50,106 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:50,123 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:50,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:50,182 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:50,183 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:50,183 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:50,183 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:50,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:50,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:50,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states. [2019-10-13 19:19:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:19:50,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:50,267 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:50,271 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2055588152, now seen corresponding path program 1 times [2019-10-13 19:19:50,285 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:50,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893460023] [2019-10-13 19:19:50,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,880 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,088 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:19:52,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893460023] [2019-10-13 19:19:52,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866063537] [2019-10-13 19:19:52,514 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 19:19:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:19:53,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 19:19:53,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:53,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-10-13 19:19:53,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023715664] [2019-10-13 19:19:53,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:19:53,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:53,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:19:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:53,190 INFO L87 Difference]: Start difference. First operand 832 states. Second operand 2 states. [2019-10-13 19:19:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:53,342 INFO L93 Difference]: Finished difference Result 1357 states and 2183 transitions. [2019-10-13 19:19:53,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:19:53,344 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 161 [2019-10-13 19:19:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:53,381 INFO L225 Difference]: With dead ends: 1357 [2019-10-13 19:19:53,381 INFO L226 Difference]: Without dead ends: 686 [2019-10-13 19:19:53,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-13 19:19:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2019-10-13 19:19:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-13 19:19:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1083 transitions. [2019-10-13 19:19:53,538 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1083 transitions. Word has length 161 [2019-10-13 19:19:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:53,540 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1083 transitions. [2019-10-13 19:19:53,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:19:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1083 transitions. [2019-10-13 19:19:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:19:53,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:53,550 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:53,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:53,759 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1248623512, now seen corresponding path program 1 times [2019-10-13 19:19:53,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:53,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310483168] [2019-10-13 19:19:53,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:53,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:53,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,810 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:19:55,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310483168] [2019-10-13 19:19:55,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058072222] [2019-10-13 19:19:55,286 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 19:19:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:55,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:19:55,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:55,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:19:55,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088292721] [2019-10-13 19:19:55,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:55,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:55,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:55,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:55,987 INFO L87 Difference]: Start difference. First operand 686 states and 1083 transitions. Second operand 4 states. [2019-10-13 19:19:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:56,147 INFO L93 Difference]: Finished difference Result 1355 states and 2156 transitions. [2019-10-13 19:19:56,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:56,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-13 19:19:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:56,157 INFO L225 Difference]: With dead ends: 1355 [2019-10-13 19:19:56,157 INFO L226 Difference]: Without dead ends: 695 [2019-10-13 19:19:56,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-13 19:19:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2019-10-13 19:19:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:19:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1097 transitions. [2019-10-13 19:19:56,220 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1097 transitions. Word has length 161 [2019-10-13 19:19:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:56,222 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1097 transitions. [2019-10-13 19:19:56,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1097 transitions. [2019-10-13 19:19:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:19:56,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:56,237 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:56,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:56,442 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:56,442 INFO L82 PathProgramCache]: Analyzing trace with hash -916200834, now seen corresponding path program 1 times [2019-10-13 19:19:56,442 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:56,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649004266] [2019-10-13 19:19:56,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:56,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:56,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,443 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:19:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 19:19:57,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649004266] [2019-10-13 19:19:57,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185436285] [2019-10-13 19:19:57,944 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 19:19:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:58,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:58,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:58,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:19:58,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824042154] [2019-10-13 19:19:58,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:58,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:58,595 INFO L87 Difference]: Start difference. First operand 695 states and 1097 transitions. Second operand 4 states. [2019-10-13 19:19:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:58,858 INFO L93 Difference]: Finished difference Result 1401 states and 2241 transitions. [2019-10-13 19:19:58,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:58,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-13 19:19:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:58,866 INFO L225 Difference]: With dead ends: 1401 [2019-10-13 19:19:58,866 INFO L226 Difference]: Without dead ends: 734 [2019-10-13 19:19:58,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-13 19:19:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-13 19:19:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-13 19:19:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1171 transitions. [2019-10-13 19:19:58,906 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1171 transitions. Word has length 163 [2019-10-13 19:19:58,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:58,906 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1171 transitions. [2019-10-13 19:19:58,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1171 transitions. [2019-10-13 19:19:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 19:19:58,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:58,914 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:59,131 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,132 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -444482810, now seen corresponding path program 1 times [2019-10-13 19:19:59,133 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:59,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016642955] [2019-10-13 19:19:59,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,133 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,103 WARN L191 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 19:20:00,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016642955] [2019-10-13 19:20:00,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935197214] [2019-10-13 19:20:00,682 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 19:20:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:01,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:01,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:01,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-13 19:20:01,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478360202] [2019-10-13 19:20:01,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:01,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:01,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:20:01,499 INFO L87 Difference]: Start difference. First operand 734 states and 1171 transitions. Second operand 7 states. [2019-10-13 19:20:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:01,680 INFO L93 Difference]: Finished difference Result 1454 states and 2332 transitions. [2019-10-13 19:20:01,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:01,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-13 19:20:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:01,689 INFO L225 Difference]: With dead ends: 1454 [2019-10-13 19:20:01,690 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:20:01,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:20:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:20:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 741. [2019-10-13 19:20:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-13 19:20:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1182 transitions. [2019-10-13 19:20:01,735 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1182 transitions. Word has length 165 [2019-10-13 19:20:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:01,735 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1182 transitions. [2019-10-13 19:20:01,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1182 transitions. [2019-10-13 19:20:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:20:01,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:01,743 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:01,959 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,959 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:01,960 INFO L82 PathProgramCache]: Analyzing trace with hash 762157303, now seen corresponding path program 1 times [2019-10-13 19:20:01,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:01,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065010678] [2019-10-13 19:20:01,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,893 WARN L191 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:03,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065010678] [2019-10-13 19:20:03,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033866198] [2019-10-13 19:20:03,344 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 19:20:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:03,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:03,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:03,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:03,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127146867] [2019-10-13 19:20:03,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:03,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:03,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:03,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:03,943 INFO L87 Difference]: Start difference. First operand 741 states and 1182 transitions. Second operand 4 states. [2019-10-13 19:20:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:04,056 INFO L93 Difference]: Finished difference Result 1467 states and 2352 transitions. [2019-10-13 19:20:04,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:04,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 19:20:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:04,067 INFO L225 Difference]: With dead ends: 1467 [2019-10-13 19:20:04,067 INFO L226 Difference]: Without dead ends: 752 [2019-10-13 19:20:04,072 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-13 19:20:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 750. [2019-10-13 19:20:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:20:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1190 transitions. [2019-10-13 19:20:04,116 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1190 transitions. Word has length 166 [2019-10-13 19:20:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:04,116 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1190 transitions. [2019-10-13 19:20:04,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1190 transitions. [2019-10-13 19:20:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:20:04,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:04,126 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:04,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:04,344 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash -32158381, now seen corresponding path program 1 times [2019-10-13 19:20:04,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:04,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919382055] [2019-10-13 19:20:04,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:04,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:04,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,201 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,375 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 19:20:05,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919382055] [2019-10-13 19:20:05,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718445769] [2019-10-13 19:20:05,686 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 19:20:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:06,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:06,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:06,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2019-10-13 19:20:06,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108590236] [2019-10-13 19:20:06,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:06,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:06,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:06,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:20:06,472 INFO L87 Difference]: Start difference. First operand 750 states and 1190 transitions. Second operand 7 states. [2019-10-13 19:20:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:06,633 INFO L93 Difference]: Finished difference Result 1471 states and 2346 transitions. [2019-10-13 19:20:06,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:06,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2019-10-13 19:20:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:06,643 INFO L225 Difference]: With dead ends: 1471 [2019-10-13 19:20:06,643 INFO L226 Difference]: Without dead ends: 762 [2019-10-13 19:20:06,648 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:20:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-10-13 19:20:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 750. [2019-10-13 19:20:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:20:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1190 transitions. [2019-10-13 19:20:06,690 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1190 transitions. Word has length 166 [2019-10-13 19:20:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:06,691 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1190 transitions. [2019-10-13 19:20:06,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1190 transitions. [2019-10-13 19:20:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 19:20:06,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:06,701 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:06,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:06,913 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1189046705, now seen corresponding path program 1 times [2019-10-13 19:20:06,914 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:06,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3762854] [2019-10-13 19:20:06,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,005 WARN L191 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:08,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3762854] [2019-10-13 19:20:08,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39664125] [2019-10-13 19:20:08,348 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 19:20:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:08,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:20:08,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:08,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:08,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084073309] [2019-10-13 19:20:08,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:08,921 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:08,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:08,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:08,922 INFO L87 Difference]: Start difference. First operand 750 states and 1190 transitions. Second operand 4 states. [2019-10-13 19:20:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:09,012 INFO L93 Difference]: Finished difference Result 1447 states and 2313 transitions. [2019-10-13 19:20:09,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:09,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-13 19:20:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:09,018 INFO L225 Difference]: With dead ends: 1447 [2019-10-13 19:20:09,018 INFO L226 Difference]: Without dead ends: 750 [2019-10-13 19:20:09,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-13 19:20:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-13 19:20:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:20:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1185 transitions. [2019-10-13 19:20:09,054 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1185 transitions. Word has length 169 [2019-10-13 19:20:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:09,054 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1185 transitions. [2019-10-13 19:20:09,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1185 transitions. [2019-10-13 19:20:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:20:09,060 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:09,060 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:09,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:09,268 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1058024854, now seen corresponding path program 1 times [2019-10-13 19:20:09,269 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:09,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808073481] [2019-10-13 19:20:09,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:09,270 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:09,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,139 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:10,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808073481] [2019-10-13 19:20:10,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975728896] [2019-10-13 19:20:10,478 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 19:20:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:10,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:11,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:11,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:11,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895215244] [2019-10-13 19:20:11,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:11,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:11,026 INFO L87 Difference]: Start difference. First operand 750 states and 1185 transitions. Second operand 4 states. [2019-10-13 19:20:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:11,241 INFO L93 Difference]: Finished difference Result 1443 states and 2304 transitions. [2019-10-13 19:20:11,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:11,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 19:20:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:11,248 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 19:20:11,248 INFO L226 Difference]: Without dead ends: 792 [2019-10-13 19:20:11,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-13 19:20:11,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 789. [2019-10-13 19:20:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-13 19:20:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1258 transitions. [2019-10-13 19:20:11,285 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1258 transitions. Word has length 170 [2019-10-13 19:20:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:11,286 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1258 transitions. [2019-10-13 19:20:11,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1258 transitions. [2019-10-13 19:20:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:20:11,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:11,295 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:11,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:11,513 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2107428973, now seen corresponding path program 1 times [2019-10-13 19:20:11,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:11,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398462034] [2019-10-13 19:20:11,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,415 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:12,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398462034] [2019-10-13 19:20:12,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108152281] [2019-10-13 19:20:12,738 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 19:20:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:13,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 19:20:13,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:13,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:20:13,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940398125] [2019-10-13 19:20:13,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:13,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:13,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:13,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:13,375 INFO L87 Difference]: Start difference. First operand 789 states and 1258 transitions. Second operand 7 states. [2019-10-13 19:20:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:13,503 INFO L93 Difference]: Finished difference Result 1457 states and 2320 transitions. [2019-10-13 19:20:13,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:13,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2019-10-13 19:20:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:13,510 INFO L225 Difference]: With dead ends: 1457 [2019-10-13 19:20:13,510 INFO L226 Difference]: Without dead ends: 806 [2019-10-13 19:20:13,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2019-10-13 19:20:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 796. [2019-10-13 19:20:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-13 19:20:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1267 transitions. [2019-10-13 19:20:13,543 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1267 transitions. Word has length 171 [2019-10-13 19:20:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:13,544 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1267 transitions. [2019-10-13 19:20:13,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1267 transitions. [2019-10-13 19:20:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 19:20:13,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:13,551 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:13,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:13,759 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:13,759 INFO L82 PathProgramCache]: Analyzing trace with hash 817653790, now seen corresponding path program 1 times [2019-10-13 19:20:13,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:13,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053514366] [2019-10-13 19:20:13,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,706 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:15,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053514366] [2019-10-13 19:20:15,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483451621] [2019-10-13 19:20:15,010 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 19:20:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:15,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:20:15,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:15,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:15,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046440270] [2019-10-13 19:20:15,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:15,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:15,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:15,605 INFO L87 Difference]: Start difference. First operand 796 states and 1267 transitions. Second operand 4 states. [2019-10-13 19:20:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:15,677 INFO L93 Difference]: Finished difference Result 1499 states and 2396 transitions. [2019-10-13 19:20:15,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:15,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 19:20:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:15,683 INFO L225 Difference]: With dead ends: 1499 [2019-10-13 19:20:15,684 INFO L226 Difference]: Without dead ends: 796 [2019-10-13 19:20:15,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2019-10-13 19:20:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2019-10-13 19:20:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-13 19:20:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1264 transitions. [2019-10-13 19:20:15,717 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1264 transitions. Word has length 172 [2019-10-13 19:20:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:15,718 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1264 transitions. [2019-10-13 19:20:15,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1264 transitions. [2019-10-13 19:20:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 19:20:15,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:15,724 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:15,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:15,932 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash 674320387, now seen corresponding path program 1 times [2019-10-13 19:20:15,933 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:15,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070490550] [2019-10-13 19:20:15,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:15,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:15,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,749 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2019-10-13 19:20:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,883 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:17,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070490550] [2019-10-13 19:20:17,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826884498] [2019-10-13 19:20:17,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:20:17,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:17,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:17,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-13 19:20:17,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264041763] [2019-10-13 19:20:17,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:20:17,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:17,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:20:17,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:17,947 INFO L87 Difference]: Start difference. First operand 796 states and 1264 transitions. Second operand 5 states.