java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:19:57,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:19:57,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:19:57,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:19:57,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:19:57,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:19:57,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:19:57,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:19:57,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:19:57,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:19:57,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:19:57,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:19:57,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:19:57,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:19:57,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:19:57,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:19:57,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:19:57,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:19:57,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:19:57,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:19:57,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:19:57,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:19:57,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:19:57,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:19:57,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:19:57,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:19:57,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:19:57,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:19:57,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:19:57,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:19:57,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:19:57,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:19:57,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:19:57,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:19:57,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:19:57,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:19:57,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:19:57,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:19:57,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:19:57,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:19:57,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:19:57,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:19:57,138 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:19:57,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:19:57,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:19:57,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:19:57,140 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:19:57,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:19:57,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:19:57,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:19:57,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:19:57,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:19:57,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:19:57,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:19:57,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:19:57,142 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:19:57,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:19:57,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:19:57,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:19:57,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:19:57,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:19:57,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:19:57,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:19:57,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:19:57,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:19:57,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:19:57,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:19:57,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:19:57,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:19:57,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:19:57,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:19:57,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:19:57,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:19:57,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:19:57,467 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:19:57,467 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:19:57,468 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-14 23:19:57,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f2724ac/b3b59c289e6e48d6981273c2dee28931/FLAG23224a62f [2019-10-14 23:19:58,180 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:19:58,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-14 23:19:58,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f2724ac/b3b59c289e6e48d6981273c2dee28931/FLAG23224a62f [2019-10-14 23:19:58,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f2724ac/b3b59c289e6e48d6981273c2dee28931 [2019-10-14 23:19:58,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:19:58,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:19:58,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:19:58,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:19:58,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:19:58,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4709edc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58, skipping insertion in model container [2019-10-14 23:19:58,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,370 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:19:58,462 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:19:59,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:19:59,234 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:19:59,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:19:59,465 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:19:59,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59 WrapperNode [2019-10-14 23:19:59,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:19:59,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:19:59,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:19:59,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:19:59,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... [2019-10-14 23:19:59,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:19:59,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:19:59,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:19:59,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:19:59,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:19:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:19:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:19:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:19:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:19:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:19:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:19:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:19:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:19:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:19:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:19:59,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:19:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:19:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:19:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:19:59,765 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:19:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:19:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:19:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:19:59,766 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:19:59,767 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:19:59,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:19:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:19:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:19:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:19:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:19:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:19:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:19:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:19:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:19:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:19:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:19:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:19:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:19:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:19:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:19:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:19:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:19:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:19:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:19:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:19:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:19:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:19:59,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:19:59,774 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:19:59,774 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:19:59,774 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:19:59,775 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:19:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:19:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:19:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:19:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:19:59,776 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:19:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:19:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:19:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:19:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:19:59,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-14 23:19:59,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:19:59,779 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:19:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:19:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:19:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:19:59,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:19:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:19:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:19:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:19:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:19:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:19:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:19:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:19:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:19:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:19:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:19:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:19:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:19:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:19:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:19:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:19:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:19:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:19:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:19:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:19:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:19:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:19:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:19:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:19:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:19:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:19:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:19:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:19:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:19:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:19:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:19:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:19:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:19:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:19:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:19:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:19:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:19:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:19:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:19:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:19:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:19:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:19:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:19:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:19:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:19:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:19:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:19:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:19:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:19:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:19:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:19:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:19:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:19:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:19:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:19:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:19:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:19:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:19:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:19:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:19:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:19:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:19:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:19:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:19:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:19:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:19:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:19:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:19:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:19:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:19:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:02,308 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:02,308 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:02,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:02 BoogieIcfgContainer [2019-10-14 23:20:02,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:02,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:02,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:02,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:02,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:58" (1/3) ... [2019-10-14 23:20:02,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2565a167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:02, skipping insertion in model container [2019-10-14 23:20:02,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:59" (2/3) ... [2019-10-14 23:20:02,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2565a167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:02, skipping insertion in model container [2019-10-14 23:20:02,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:02" (3/3) ... [2019-10-14 23:20:02,320 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2019-10-14 23:20:02,331 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:02,341 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:02,353 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:02,401 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:02,401 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:02,401 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:02,401 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:02,401 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:02,402 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:02,402 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:02,402 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states. [2019-10-14 23:20:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:20:02,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:02,472 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:02,475 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:02,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1159872126, now seen corresponding path program 1 times [2019-10-14 23:20:02,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:02,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470547590] [2019-10-14 23:20:02,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:02,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:02,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,082 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,373 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,565 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:04,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470547590] [2019-10-14 23:20:04,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687282912] [2019-10-14 23:20:04,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:05,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:20:05,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:05,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-14 23:20:05,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909118549] [2019-10-14 23:20:05,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:05,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:20:05,574 INFO L87 Difference]: Start difference. First operand 790 states. Second operand 2 states. [2019-10-14 23:20:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:05,675 INFO L93 Difference]: Finished difference Result 666 states and 1058 transitions. [2019-10-14 23:20:05,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:05,680 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-14 23:20:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:05,726 INFO L225 Difference]: With dead ends: 666 [2019-10-14 23:20:05,726 INFO L226 Difference]: Without dead ends: 629 [2019-10-14 23:20:05,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:20:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-14 23:20:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-14 23:20:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-14 23:20:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1003 transitions. [2019-10-14 23:20:05,857 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1003 transitions. Word has length 116 [2019-10-14 23:20:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:05,860 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1003 transitions. [2019-10-14 23:20:05,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1003 transitions. [2019-10-14 23:20:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-14 23:20:05,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:05,867 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:06,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:06,076 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1060701681, now seen corresponding path program 1 times [2019-10-14 23:20:06,077 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:06,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094551239] [2019-10-14 23:20:06,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:06,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:06,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,255 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,569 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,737 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:08,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094551239] [2019-10-14 23:20:08,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517873278] [2019-10-14 23:20:08,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:08,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:08,717 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:08,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:08,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422434032] [2019-10-14 23:20:08,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:08,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:08,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:08,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:08,720 INFO L87 Difference]: Start difference. First operand 629 states and 1003 transitions. Second operand 4 states. [2019-10-14 23:20:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:08,833 INFO L93 Difference]: Finished difference Result 1230 states and 1979 transitions. [2019-10-14 23:20:08,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:08,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-14 23:20:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:08,840 INFO L225 Difference]: With dead ends: 1230 [2019-10-14 23:20:08,840 INFO L226 Difference]: Without dead ends: 629 [2019-10-14 23:20:08,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-14 23:20:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-14 23:20:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-14 23:20:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1002 transitions. [2019-10-14 23:20:08,897 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1002 transitions. Word has length 118 [2019-10-14 23:20:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:08,901 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1002 transitions. [2019-10-14 23:20:08,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1002 transitions. [2019-10-14 23:20:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 23:20:08,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:08,905 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:09,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:09,114 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1607555785, now seen corresponding path program 1 times [2019-10-14 23:20:09,115 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:09,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726276200] [2019-10-14 23:20:09,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:09,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:09,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,123 WARN L191 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,396 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,569 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:10,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726276200] [2019-10-14 23:20:10,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489021296] [2019-10-14 23:20:10,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:11,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:11,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:11,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:11,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351474244] [2019-10-14 23:20:11,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:11,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:11,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:11,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:11,554 INFO L87 Difference]: Start difference. First operand 629 states and 1002 transitions. Second operand 4 states. [2019-10-14 23:20:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:11,643 INFO L93 Difference]: Finished difference Result 1230 states and 1977 transitions. [2019-10-14 23:20:11,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:11,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-14 23:20:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:11,650 INFO L225 Difference]: With dead ends: 1230 [2019-10-14 23:20:11,651 INFO L226 Difference]: Without dead ends: 629 [2019-10-14 23:20:11,655 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-14 23:20:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-14 23:20:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-14 23:20:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-10-14 23:20:11,703 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 120 [2019-10-14 23:20:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:11,704 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-10-14 23:20:11,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-10-14 23:20:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:20:11,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:11,708 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:11,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:11,915 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash -104433287, now seen corresponding path program 1 times [2019-10-14 23:20:11,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:11,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043421221] [2019-10-14 23:20:11,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:11,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:11,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,956 WARN L191 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,192 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,334 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:13,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043421221] [2019-10-14 23:20:13,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443802019] [2019-10-14 23:20:13,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:14,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:14,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:14,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:14,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881900404] [2019-10-14 23:20:14,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:14,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:14,188 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-10-14 23:20:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:14,318 INFO L93 Difference]: Finished difference Result 1237 states and 1984 transitions. [2019-10-14 23:20:14,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:14,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-14 23:20:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:14,324 INFO L225 Difference]: With dead ends: 1237 [2019-10-14 23:20:14,324 INFO L226 Difference]: Without dead ends: 638 [2019-10-14 23:20:14,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-14 23:20:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-14 23:20:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-14 23:20:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1013 transitions. [2019-10-14 23:20:14,360 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1013 transitions. Word has length 122 [2019-10-14 23:20:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:14,361 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1013 transitions. [2019-10-14 23:20:14,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1013 transitions. [2019-10-14 23:20:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:20:14,365 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:14,365 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:14,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:14,573 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash -730714916, now seen corresponding path program 1 times [2019-10-14 23:20:14,574 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:14,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109258835] [2019-10-14 23:20:14,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:14,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:14,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,475 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,813 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,027 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:16,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109258835] [2019-10-14 23:20:16,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972148904] [2019-10-14 23:20:16,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:16,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:16,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:16,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:16,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549572069] [2019-10-14 23:20:16,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:16,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:16,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:16,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:16,936 INFO L87 Difference]: Start difference. First operand 638 states and 1013 transitions. Second operand 4 states. [2019-10-14 23:20:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:17,021 INFO L93 Difference]: Finished difference Result 1239 states and 1985 transitions. [2019-10-14 23:20:17,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:17,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-14 23:20:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:17,029 INFO L225 Difference]: With dead ends: 1239 [2019-10-14 23:20:17,029 INFO L226 Difference]: Without dead ends: 638 [2019-10-14 23:20:17,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-14 23:20:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-14 23:20:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-14 23:20:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1012 transitions. [2019-10-14 23:20:17,063 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1012 transitions. Word has length 123 [2019-10-14 23:20:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:17,063 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1012 transitions. [2019-10-14 23:20:17,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1012 transitions. [2019-10-14 23:20:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:20:17,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:17,067 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:17,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:17,278 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:17,279 INFO L82 PathProgramCache]: Analyzing trace with hash -212076067, now seen corresponding path program 1 times [2019-10-14 23:20:17,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:17,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707721825] [2019-10-14 23:20:17,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:17,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:17,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,524 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,836 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,997 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:19,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707721825] [2019-10-14 23:20:19,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483969674] [2019-10-14 23:20:19,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:19,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:19,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:19,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-14 23:20:19,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170262173] [2019-10-14 23:20:19,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:19,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:19,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:20:19,947 INFO L87 Difference]: Start difference. First operand 638 states and 1012 transitions. Second operand 4 states. [2019-10-14 23:20:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:20,035 INFO L93 Difference]: Finished difference Result 1239 states and 1984 transitions. [2019-10-14 23:20:20,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:20,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-14 23:20:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:20,042 INFO L225 Difference]: With dead ends: 1239 [2019-10-14 23:20:20,043 INFO L226 Difference]: Without dead ends: 638 [2019-10-14 23:20:20,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-14 23:20:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-14 23:20:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-14 23:20:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1011 transitions. [2019-10-14 23:20:20,071 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1011 transitions. Word has length 124 [2019-10-14 23:20:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:20,073 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1011 transitions. [2019-10-14 23:20:20,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1011 transitions. [2019-10-14 23:20:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:20:20,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:20,076 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:20,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:20,292 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1439359232, now seen corresponding path program 1 times [2019-10-14 23:20:20,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:20,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348784292] [2019-10-14 23:20:20,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:20,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:20,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,248 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,553 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,774 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:20:22,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348784292] [2019-10-14 23:20:22,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544494176] [2019-10-14 23:20:22,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:20:22,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:22,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:22,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2019-10-14 23:20:22,795 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783666496] [2019-10-14 23:20:22,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:20:22,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:20:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:20:22,797 INFO L87 Difference]: Start difference. First operand 638 states and 1011 transitions. Second operand 7 states. [2019-10-14 23:20:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:22,956 INFO L93 Difference]: Finished difference Result 1246 states and 1993 transitions. [2019-10-14 23:20:22,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:20:22,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2019-10-14 23:20:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:22,963 INFO L225 Difference]: With dead ends: 1246 [2019-10-14 23:20:22,963 INFO L226 Difference]: Without dead ends: 649 [2019-10-14 23:20:22,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:20:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-14 23:20:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2019-10-14 23:20:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-14 23:20:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1021 transitions. [2019-10-14 23:20:22,999 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1021 transitions. Word has length 125 [2019-10-14 23:20:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:22,999 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1021 transitions. [2019-10-14 23:20:23,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:20:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1021 transitions. [2019-10-14 23:20:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:20:23,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:23,002 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:23,218 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:23,219 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash 438750369, now seen corresponding path program 1 times [2019-10-14 23:20:23,219 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:23,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942252714] [2019-10-14 23:20:23,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:23,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:23,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,248 WARN L191 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,495 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,668 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:20:25,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942252714] [2019-10-14 23:20:25,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577208733] [2019-10-14 23:20:25,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:20:25,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:25,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:25,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2019-10-14 23:20:25,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324043822] [2019-10-14 23:20:25,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:20:25,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:20:25,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:20:25,766 INFO L87 Difference]: Start difference. First operand 645 states and 1021 transitions. Second operand 7 states. [2019-10-14 23:20:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:25,906 INFO L93 Difference]: Finished difference Result 1252 states and 2002 transitions. [2019-10-14 23:20:25,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:20:25,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2019-10-14 23:20:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:25,914 INFO L225 Difference]: With dead ends: 1252 [2019-10-14 23:20:25,914 INFO L226 Difference]: Without dead ends: 652 [2019-10-14 23:20:25,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:20:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2019-10-14 23:20:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 648. [2019-10-14 23:20:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-14 23:20:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1026 transitions. [2019-10-14 23:20:25,953 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1026 transitions. Word has length 126 [2019-10-14 23:20:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:25,956 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1026 transitions. [2019-10-14 23:20:25,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:20:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1026 transitions. [2019-10-14 23:20:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:20:25,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:25,959 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:26,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:26,167 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash -499781246, now seen corresponding path program 1 times [2019-10-14 23:20:26,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:26,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822644229] [2019-10-14 23:20:26,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,117 WARN L191 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,380 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,538 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:20:27,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822644229] [2019-10-14 23:20:27,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294041604] [2019-10-14 23:20:27,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:28,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:28,425 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:28,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-14 23:20:28,426 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656225332] [2019-10-14 23:20:28,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:28,426 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:20:28,427 INFO L87 Difference]: Start difference. First operand 648 states and 1026 transitions. Second operand 4 states. [2019-10-14 23:20:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:28,621 INFO L93 Difference]: Finished difference Result 1257 states and 2012 transitions. [2019-10-14 23:20:28,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:28,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-14 23:20:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:28,629 INFO L225 Difference]: With dead ends: 1257 [2019-10-14 23:20:28,630 INFO L226 Difference]: Without dead ends: 648 [2019-10-14 23:20:28,634 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:20:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-14 23:20:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-14 23:20:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-14 23:20:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1021 transitions. [2019-10-14 23:20:28,667 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1021 transitions. Word has length 126 [2019-10-14 23:20:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:28,667 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1021 transitions. [2019-10-14 23:20:28,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1021 transitions. [2019-10-14 23:20:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 23:20:28,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:28,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:28,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:28,880 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:28,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1419215856, now seen corresponding path program 1 times [2019-10-14 23:20:28,880 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:28,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263820724] [2019-10-14 23:20:28,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:28,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:28,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,954 WARN L191 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-14 23:20:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,232 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,388 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:20:30,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263820724] [2019-10-14 23:20:30,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817520943] [2019-10-14 23:20:30,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:20:31,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:31,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:31,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2019-10-14 23:20:31,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029027002] [2019-10-14 23:20:31,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:20:31,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:20:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:20:31,398 INFO L87 Difference]: Start difference. First operand 648 states and 1021 transitions. Second operand 9 states. [2019-10-14 23:20:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:31,657 INFO L93 Difference]: Finished difference Result 1261 states and 2006 transitions. [2019-10-14 23:20:31,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:20:31,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2019-10-14 23:20:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:31,665 INFO L225 Difference]: With dead ends: 1261 [2019-10-14 23:20:31,665 INFO L226 Difference]: Without dead ends: 658 [2019-10-14 23:20:31,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:20:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-14 23:20:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 652. [2019-10-14 23:20:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2019-10-14 23:20:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1027 transitions. [2019-10-14 23:20:31,715 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1027 transitions. Word has length 129 [2019-10-14 23:20:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:31,716 INFO L462 AbstractCegarLoop]: Abstraction has 652 states and 1027 transitions. [2019-10-14 23:20:31,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:20:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1027 transitions. [2019-10-14 23:20:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:20:31,719 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:31,719 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:31,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:31,930 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:31,931 INFO L82 PathProgramCache]: Analyzing trace with hash -140160693, now seen corresponding path program 1 times [2019-10-14 23:20:31,931 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:31,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704142917] [2019-10-14 23:20:31,931 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:31,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:31,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat