/usr/bin/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:28:48,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:28:48,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:28:48,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:28:48,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:28:48,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:28:48,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:28:48,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:28:48,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:28:48,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:28:48,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:28:48,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:28:48,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:28:48,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:28:48,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:28:48,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:28:48,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:28:48,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:28:48,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:28:48,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:28:48,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:28:48,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:28:48,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:28:48,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:28:48,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:28:48,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:28:48,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:28:48,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:28:48,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:28:48,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:28:48,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:28:48,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:28:48,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:28:48,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:28:48,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:28:48,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:28:48,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:28:48,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:28:48,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:28:48,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:28:48,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:28:48,713 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 [2019-11-06 21:28:48,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:28:48,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:28:48,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:28:48,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:28:48,737 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:28:48,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:28:48,738 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:28:48,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:28:48,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:28:48,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:28:48,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:28:48,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:28:48,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:28:48,740 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:28:48,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:28:48,741 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:28:48,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:28:48,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:28:48,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:28:48,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:28:48,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:28:48,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:28:48,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:28:48,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:28:48,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:28:48,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:28:48,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:28:48,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:28:48,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:28:49,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:28:49,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:28:49,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:28:49,034 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:28:49,036 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:28:49,037 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-11-06 21:28:49,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c7f8eb2/b7ac3d2fb42044949d036f735e2b1ba1/FLAGb319d3aa3 [2019-11-06 21:28:49,785 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:28:49,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-11-06 21:28:49,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c7f8eb2/b7ac3d2fb42044949d036f735e2b1ba1/FLAGb319d3aa3 [2019-11-06 21:28:49,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c7f8eb2/b7ac3d2fb42044949d036f735e2b1ba1 [2019-11-06 21:28:49,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:28:49,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:28:49,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:49,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:28:49,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:28:49,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:49" (1/1) ... [2019-11-06 21:28:49,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f9a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:49, skipping insertion in model container [2019-11-06 21:28:49,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:49" (1/1) ... [2019-11-06 21:28:49,950 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:28:50,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:28:50,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:50,767 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:28:50,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:50,971 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:28:50,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50 WrapperNode [2019-11-06 21:28:50,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:50,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:28:50,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:28:50,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:28:50,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (1/1) ... [2019-11-06 21:28:51,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:28:51,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:28:51,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:28:51,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:28:51,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (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 [2019-11-06 21:28:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:28:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:28:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:51,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:28:51,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:28:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:28:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:51,251 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:28:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:28:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:28:51,252 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:28:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:28:51,253 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:28:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:28:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:28:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:28:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:28:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:28:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:28:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:28:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:28:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:28:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:28:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:28:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:28:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:28:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:28:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:28:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:28:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:28:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:28:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:28:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:28:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:28:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:28:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:28:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:28:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:28:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:28:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:28:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-06 21:28:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:28:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-06 21:28:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:28:51,270 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:28:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:28:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:28:51,271 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:28:51,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:28:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:28:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:28:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:28:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:28:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:28:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:28:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:28:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:28:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:28:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:28:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:28:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:28:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:28:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:28:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:28:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:28:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:28:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:28:51,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:28:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:28:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:28:51,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:28:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:28:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:28:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:28:51,281 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:28:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:28:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:28:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:28:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:28:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:28:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:28:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:28:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:28:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:28:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:28:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:28:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:28:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:28:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:28:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:28:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:28:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:28:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:28:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:28:51,300 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:28:51,301 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-06 21:28:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:28:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:28:53,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:28:53,735 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:28:53,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:53 BoogieIcfgContainer [2019-11-06 21:28:53,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:28:53,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:28:53,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:28:53,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:28:53,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:28:49" (1/3) ... [2019-11-06 21:28:53,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591d76ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:53, skipping insertion in model container [2019-11-06 21:28:53,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:50" (2/3) ... [2019-11-06 21:28:53,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591d76ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:53, skipping insertion in model container [2019-11-06 21:28:53,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:53" (3/3) ... [2019-11-06 21:28:53,746 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-11-06 21:28:53,757 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:28:53,768 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:28:53,779 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:28:53,824 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:28:53,825 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:28:53,825 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:28:53,825 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:28:53,825 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:28:53,825 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:28:53,826 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:28:53,826 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:28:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states. [2019-11-06 21:28:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-06 21:28:53,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:53,906 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:53,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2027146740, now seen corresponding path program 1 times [2019-11-06 21:28:53,924 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:53,924 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785905908] [2019-11-06 21:28:53,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,544 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:28:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:56,001 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785905908] [2019-11-06 21:28:56,002 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407639734] [2019-11-06 21:28:56,002 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 [2019-11-06 21:28:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:56,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:28:56,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 21:28:56,589 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:56,589 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-11-06 21:28:56,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094239718] [2019-11-06 21:28:56,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:28:56,597 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:56,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:28:56,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:56,613 INFO L87 Difference]: Start difference. First operand 851 states. Second operand 2 states. [2019-11-06 21:28:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:56,803 INFO L93 Difference]: Finished difference Result 1381 states and 2213 transitions. [2019-11-06 21:28:56,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:28:56,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-11-06 21:28:56,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:56,833 INFO L225 Difference]: With dead ends: 1381 [2019-11-06 21:28:56,834 INFO L226 Difference]: Without dead ends: 698 [2019-11-06 21:28:56,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-11-06 21:28:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2019-11-06 21:28:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-11-06 21:28:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1098 transitions. [2019-11-06 21:28:56,968 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1098 transitions. Word has length 113 [2019-11-06 21:28:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:56,971 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1098 transitions. [2019-11-06 21:28:56,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:28:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1098 transitions. [2019-11-06 21:28:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-06 21:28:56,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:56,977 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:57,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:57,181 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1220182100, now seen corresponding path program 1 times [2019-11-06 21:28:57,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:57,186 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525364137] [2019-11-06 21:28:57,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,344 WARN L191 SmtUtils]: Spent 979.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:28:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,534 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:28:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:58,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525364137] [2019-11-06 21:28:58,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281037481] [2019-11-06 21:28:58,717 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 [2019-11-06 21:28:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:59,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:59,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:59,354 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:59,354 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-11-06 21:28:59,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148769437] [2019-11-06 21:28:59,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:59,356 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:59,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:59,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:28:59,357 INFO L87 Difference]: Start difference. First operand 698 states and 1098 transitions. Second operand 4 states. [2019-11-06 21:28:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:59,486 INFO L93 Difference]: Finished difference Result 1379 states and 2186 transitions. [2019-11-06 21:28:59,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:59,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-06 21:28:59,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:59,492 INFO L225 Difference]: With dead ends: 1379 [2019-11-06 21:28:59,493 INFO L226 Difference]: Without dead ends: 707 [2019-11-06 21:28:59,497 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-11-06 21:28:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2019-11-06 21:28:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-11-06 21:28:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1112 transitions. [2019-11-06 21:28:59,552 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1112 transitions. Word has length 113 [2019-11-06 21:28:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:59,554 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1112 transitions. [2019-11-06 21:28:59,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1112 transitions. [2019-11-06 21:28:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 21:28:59,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:59,560 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:59,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:59,768 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1088965156, now seen corresponding path program 1 times [2019-11-06 21:28:59,769 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:59,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749615332] [2019-11-06 21:28:59,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,776 WARN L191 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,934 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:29:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:29:01,084 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749615332] [2019-11-06 21:29:01,084 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400721104] [2019-11-06 21:29:01,085 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 [2019-11-06 21:29:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:01,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:29:01,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:29:01,719 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:01,720 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:29:01,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064927687] [2019-11-06 21:29:01,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:29:01,721 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:01,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:29:01,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:29:01,722 INFO L87 Difference]: Start difference. First operand 707 states and 1112 transitions. Second operand 4 states. [2019-11-06 21:29:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:01,979 INFO L93 Difference]: Finished difference Result 1425 states and 2271 transitions. [2019-11-06 21:29:01,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:29:01,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-11-06 21:29:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:01,986 INFO L225 Difference]: With dead ends: 1425 [2019-11-06 21:29:01,986 INFO L226 Difference]: Without dead ends: 746 [2019-11-06 21:29:01,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:29:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-11-06 21:29:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-11-06 21:29:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-11-06 21:29:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1186 transitions. [2019-11-06 21:29:02,025 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1186 transitions. Word has length 115 [2019-11-06 21:29:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:02,025 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1186 transitions. [2019-11-06 21:29:02,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:29:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1186 transitions. [2019-11-06 21:29:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-06 21:29:02,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:02,028 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:29:02,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:02,235 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1537184166, now seen corresponding path program 1 times [2019-11-06 21:29:02,236 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:02,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470282572] [2019-11-06 21:29:02,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,165 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 21:29:03,596 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470282572] [2019-11-06 21:29:03,596 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765914916] [2019-11-06 21:29:03,596 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 [2019-11-06 21:29:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:04,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:29:04,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:29:04,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:04,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2019-11-06 21:29:04,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487883291] [2019-11-06 21:29:04,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:29:04,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:04,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:29:04,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:29:04,373 INFO L87 Difference]: Start difference. First operand 746 states and 1186 transitions. Second operand 7 states. [2019-11-06 21:29:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:04,549 INFO L93 Difference]: Finished difference Result 1478 states and 2362 transitions. [2019-11-06 21:29:04,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:29:04,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-11-06 21:29:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:04,558 INFO L225 Difference]: With dead ends: 1478 [2019-11-06 21:29:04,559 INFO L226 Difference]: Without dead ends: 760 [2019-11-06 21:29:04,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:29:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-11-06 21:29:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-11-06 21:29:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-11-06 21:29:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2019-11-06 21:29:04,601 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 117 [2019-11-06 21:29:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:04,602 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2019-11-06 21:29:04,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:29:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2019-11-06 21:29:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:29:04,606 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:04,606 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:04,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:04,813 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:04,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638134, now seen corresponding path program 1 times [2019-11-06 21:29:04,814 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:04,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560580108] [2019-11-06 21:29:04,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,805 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:06,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560580108] [2019-11-06 21:29:06,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988979920] [2019-11-06 21:29:06,105 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 [2019-11-06 21:29:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:06,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:29:06,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:29:06,662 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:06,662 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:29:06,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545688860] [2019-11-06 21:29:06,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:29:06,663 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:06,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:29:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:29:06,664 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand 4 states. [2019-11-06 21:29:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:06,791 INFO L93 Difference]: Finished difference Result 1491 states and 2382 transitions. [2019-11-06 21:29:06,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:29:06,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:29:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:06,798 INFO L225 Difference]: With dead ends: 1491 [2019-11-06 21:29:06,798 INFO L226 Difference]: Without dead ends: 764 [2019-11-06 21:29:06,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:29:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-11-06 21:29:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2019-11-06 21:29:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-11-06 21:29:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-11-06 21:29:06,835 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-11-06 21:29:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:06,835 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-11-06 21:29:06,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:29:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-11-06 21:29:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:29:06,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:06,839 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:07,054 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:07,055 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash 718255648, now seen corresponding path program 1 times [2019-11-06 21:29:07,056 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:07,056 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928617071] [2019-11-06 21:29:07,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:07,974 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:29:08,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928617071] [2019-11-06 21:29:08,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310515317] [2019-11-06 21:29:08,346 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 [2019-11-06 21:29:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:08,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:29:08,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:29:08,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:08,943 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2019-11-06 21:29:08,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409400309] [2019-11-06 21:29:08,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:29:08,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:08,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:29:08,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:29:08,945 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 7 states. [2019-11-06 21:29:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:09,116 INFO L93 Difference]: Finished difference Result 1495 states and 2376 transitions. [2019-11-06 21:29:09,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:29:09,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-11-06 21:29:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:09,124 INFO L225 Difference]: With dead ends: 1495 [2019-11-06 21:29:09,124 INFO L226 Difference]: Without dead ends: 774 [2019-11-06 21:29:09,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:29:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-11-06 21:29:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 762. [2019-11-06 21:29:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-11-06 21:29:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-11-06 21:29:09,256 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-11-06 21:29:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:09,257 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-11-06 21:29:09,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:29:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-11-06 21:29:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-06 21:29:09,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:09,263 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:09,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:09,474 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash -64052637, now seen corresponding path program 1 times [2019-11-06 21:29:09,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:09,477 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939093318] [2019-11-06 21:29:09,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,467 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:10,760 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939093318] [2019-11-06 21:29:10,761 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879275092] [2019-11-06 21:29:10,761 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 [2019-11-06 21:29:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:11,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:29:11,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:29:11,326 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:11,326 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:29:11,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152859033] [2019-11-06 21:29:11,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:29:11,332 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:29:11,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:29:11,333 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 4 states. [2019-11-06 21:29:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:11,428 INFO L93 Difference]: Finished difference Result 1471 states and 2343 transitions. [2019-11-06 21:29:11,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:29:11,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-06 21:29:11,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:11,435 INFO L225 Difference]: With dead ends: 1471 [2019-11-06 21:29:11,436 INFO L226 Difference]: Without dead ends: 762 [2019-11-06 21:29:11,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:29:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-11-06 21:29:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2019-11-06 21:29:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-11-06 21:29:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1200 transitions. [2019-11-06 21:29:11,477 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1200 transitions. Word has length 121 [2019-11-06 21:29:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:11,478 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1200 transitions. [2019-11-06 21:29:11,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:29:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1200 transitions. [2019-11-06 21:29:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:29:11,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:11,482 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:29:11,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:11,689 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash 78569715, now seen corresponding path program 1 times [2019-11-06 21:29:11,689 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:11,690 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436287279] [2019-11-06 21:29:11,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,776 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:13,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436287279] [2019-11-06 21:29:13,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935868451] [2019-11-06 21:29:13,044 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 [2019-11-06 21:29:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:13,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:29:13,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:29:13,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:13,625 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:29:13,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823110499] [2019-11-06 21:29:13,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:29:13,628 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:13,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:29:13,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:29:13,629 INFO L87 Difference]: Start difference. First operand 762 states and 1200 transitions. Second operand 4 states. [2019-11-06 21:29:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:13,849 INFO L93 Difference]: Finished difference Result 1467 states and 2334 transitions. [2019-11-06 21:29:13,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:29:13,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:29:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:13,860 INFO L225 Difference]: With dead ends: 1467 [2019-11-06 21:29:13,860 INFO L226 Difference]: Without dead ends: 804 [2019-11-06 21:29:13,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:29:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-11-06 21:29:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2019-11-06 21:29:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-11-06 21:29:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1273 transitions. [2019-11-06 21:29:13,913 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1273 transitions. Word has length 122 [2019-11-06 21:29:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:13,915 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1273 transitions. [2019-11-06 21:29:13,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:29:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1273 transitions. [2019-11-06 21:29:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:29:13,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:13,920 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:14,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:14,213 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:14,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:14,214 INFO L82 PathProgramCache]: Analyzing trace with hash -81320279, now seen corresponding path program 1 times [2019-11-06 21:29:14,214 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:14,214 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457830149] [2019-11-06 21:29:14,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,241 WARN L191 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:15,493 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457830149] [2019-11-06 21:29:15,494 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667224977] [2019-11-06 21:29:15,494 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 [2019-11-06 21:29:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:16,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:29:16,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:29:16,114 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:16,114 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-11-06 21:29:16,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117338320] [2019-11-06 21:29:16,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:29:16,115 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:16,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:29:16,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:29:16,115 INFO L87 Difference]: Start difference. First operand 801 states and 1273 transitions. Second operand 7 states. [2019-11-06 21:29:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:16,257 INFO L93 Difference]: Finished difference Result 1481 states and 2350 transitions. [2019-11-06 21:29:16,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:29:16,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-11-06 21:29:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:16,264 INFO L225 Difference]: With dead ends: 1481 [2019-11-06 21:29:16,264 INFO L226 Difference]: Without dead ends: 818 [2019-11-06 21:29:16,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:29:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-11-06 21:29:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 808. [2019-11-06 21:29:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-11-06 21:29:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1282 transitions. [2019-11-06 21:29:16,297 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1282 transitions. Word has length 123 [2019-11-06 21:29:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:16,299 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1282 transitions. [2019-11-06 21:29:16,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:29:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1282 transitions. [2019-11-06 21:29:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:29:16,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:16,303 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:29:16,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:16,510 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1402466365, now seen corresponding path program 1 times [2019-11-06 21:29:16,511 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:16,511 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637518364] [2019-11-06 21:29:16,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,486 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,630 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:29:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:17,781 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637518364] [2019-11-06 21:29:17,782 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594673455] [2019-11-06 21:29:17,782 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 [2019-11-06 21:29:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:18,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:29:18,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:29:18,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:18,374 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-11-06 21:29:18,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170261418] [2019-11-06 21:29:18,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:29:18,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:18,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:29:18,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:29:18,376 INFO L87 Difference]: Start difference. First operand 808 states and 1282 transitions. Second operand 4 states. [2019-11-06 21:29:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:18,455 INFO L93 Difference]: Finished difference Result 1523 states and 2426 transitions. [2019-11-06 21:29:18,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:29:18,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:29:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:18,461 INFO L225 Difference]: With dead ends: 1523 [2019-11-06 21:29:18,461 INFO L226 Difference]: Without dead ends: 808 [2019-11-06 21:29:18,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:29:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2019-11-06 21:29:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2019-11-06 21:29:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-11-06 21:29:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1279 transitions. [2019-11-06 21:29:18,492 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1279 transitions. Word has length 124 [2019-11-06 21:29:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:18,492 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1279 transitions. [2019-11-06 21:29:18,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:29:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1279 transitions. [2019-11-06 21:29:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-06 21:29:18,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:18,495 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:18,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:18,708 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash 875190530, now seen corresponding path program 1 times [2019-11-06 21:29:18,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:18,709 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836314728] [2019-11-06 21:29:18,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,689 WARN L191 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,819 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:29:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:29:19,953 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836314728] [2019-11-06 21:29:19,953 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884373458] [2019-11-06 21:29:19,953 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 [2019-11-06 21:29:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:20,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 21:29:20,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-06 21:29:20,642 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:20,642 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 21:29:20,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83843806] [2019-11-06 21:29:20,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:29:20,643 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:20,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:29:20,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:29:20,644 INFO L87 Difference]: Start difference. First operand 808 states and 1279 transitions. Second operand 3 states. [2019-11-06 21:29:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:29:20,798 INFO L93 Difference]: Finished difference Result 2108 states and 3370 transitions. [2019-11-06 21:29:20,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:29:20,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-11-06 21:29:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:29:20,809 INFO L225 Difference]: With dead ends: 2108 [2019-11-06 21:29:20,809 INFO L226 Difference]: Without dead ends: 1449 [2019-11-06 21:29:20,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:29:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2019-11-06 21:29:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1376. [2019-11-06 21:29:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-11-06 21:29:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2200 transitions. [2019-11-06 21:29:20,880 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2200 transitions. Word has length 126 [2019-11-06 21:29:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:29:20,882 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 2200 transitions. [2019-11-06 21:29:20,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:29:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2200 transitions. [2019-11-06 21:29:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-06 21:29:20,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:29:20,889 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:29:21,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:21,100 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:29:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:29:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1193387823, now seen corresponding path program 1 times [2019-11-06 21:29:21,101 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:29:21,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742076366] [2019-11-06 21:29:21,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:29:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:21,926 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:29:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,082 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:29:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,461 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-11-06 21:29:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:29:22,583 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742076366] [2019-11-06 21:29:22,583 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824560684] [2019-11-06 21:29:22,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:29:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:29:23,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-06 21:29:23,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:29:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-06 21:29:23,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:29:23,265 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2019-11-06 21:29:23,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156737905] [2019-11-06 21:29:23,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:29:23,266 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:29:23,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:29:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:29:23,266 INFO L87 Difference]: Start difference. First operand 1376 states and 2200 transitions. Second operand 6 states.