java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:38,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:38,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:38,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:38,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:38,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:38,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:38,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:38,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:38,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:38,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:38,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:38,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:38,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:38,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:38,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:38,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:38,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:38,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:38,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:38,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:38,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:38,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:38,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:38,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:38,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:38,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:38,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:38,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:38,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:38,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:38,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:38,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:38,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:38,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:38,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:38,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:38,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:38,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:38,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:38,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:38,903 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 23:18:38,917 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:38,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:38,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:38,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:38,919 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:38,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:38,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:38,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:38,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:38,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:38,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:38,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:38,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:38,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:38,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:38,922 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:38,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:38,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:38,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:38,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:38,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:38,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:38,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:38,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:38,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:38,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:38,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:38,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:38,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:39,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:39,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:39,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:39,244 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:39,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:39,245 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-14 23:18:39,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014a3cc3d/36219a3ddc6b45d295411193c34a96be/FLAG0b122d715 [2019-10-14 23:18:39,984 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:39,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-14 23:18:40,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014a3cc3d/36219a3ddc6b45d295411193c34a96be/FLAG0b122d715 [2019-10-14 23:18:40,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014a3cc3d/36219a3ddc6b45d295411193c34a96be [2019-10-14 23:18:40,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:40,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:40,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:40,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:40,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:40,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:40" (1/1) ... [2019-10-14 23:18:40,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0195cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:40, skipping insertion in model container [2019-10-14 23:18:40,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:40" (1/1) ... [2019-10-14 23:18:40,263 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:40,351 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:41,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:41,057 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:41,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:41,323 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:41,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41 WrapperNode [2019-10-14 23:18:41,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:41,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:41,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:41,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:41,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (1/1) ... [2019-10-14 23:18:41,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:41,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:41,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:41,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:41,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (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 23:18:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:41,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:18:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:18:41,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:18:41,637 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:18:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:18:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:18:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:18:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:18:41,640 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:18:41,640 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:18:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:18:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:18:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:18:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:18:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:18:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:18:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:18:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:18:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:18:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:18:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:18:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:18:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:18:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:18:41,647 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:18:41,647 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:41,647 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:41,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:18:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:18:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-14 23:18:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:18:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-14 23:18:41,649 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:18:41,649 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:18:41,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:18:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:18:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:18:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:18:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:18:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:18:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:18:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:18:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:18:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:18:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:18:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:18:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:18:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:18:41,654 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:18:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:18:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:18:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:18:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:18:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:18:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:18:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:18:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:18:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:18:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:18:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:18:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:18:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:18:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:18:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:18:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:18:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:18:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:18:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:18:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:18:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:18:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:18:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:18:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:18:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:18:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:18:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:18:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:18:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:18:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:18:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:18:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:18:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:18:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:18:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:18:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:18:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:18:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:18:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:18:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:18:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:18:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:18:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:18:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:18:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:18:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:18:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:18:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:18:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:18:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:18:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-14 23:18:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:18:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:18:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-14 23:18:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:18:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:18:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-14 23:18:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-14 23:18:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:18:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:18:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:18:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:18:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:18:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:18:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:18:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:18:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:18:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:18:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:18:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:44,194 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:44,195 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:18:44,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:44 BoogieIcfgContainer [2019-10-14 23:18:44,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:44,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:44,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:44,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:40" (1/3) ... [2019-10-14 23:18:44,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a4950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:44, skipping insertion in model container [2019-10-14 23:18:44,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:41" (2/3) ... [2019-10-14 23:18:44,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a4950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:44, skipping insertion in model container [2019-10-14 23:18:44,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:44" (3/3) ... [2019-10-14 23:18:44,208 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2019-10-14 23:18:44,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:44,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:44,252 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:44,301 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:44,301 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:44,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:44,302 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:44,302 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:44,302 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:44,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:44,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states. [2019-10-14 23:18:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:44,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:44,386 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] [2019-10-14 23:18:44,389 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash -270219278, now seen corresponding path program 1 times [2019-10-14 23:18:44,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:44,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320913444] [2019-10-14 23:18:44,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:44,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:44,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,115 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:46,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320913444] [2019-10-14 23:18:46,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567864341] [2019-10-14 23:18:46,571 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 23:18:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:47,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:18:47,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:18:47,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:47,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-14 23:18:47,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273448424] [2019-10-14 23:18:47,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:18:47,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:47,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:18:47,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:47,229 INFO L87 Difference]: Start difference. First operand 835 states. Second operand 2 states. [2019-10-14 23:18:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:47,380 INFO L93 Difference]: Finished difference Result 1349 states and 2167 transitions. [2019-10-14 23:18:47,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:18:47,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-14 23:18:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:47,419 INFO L225 Difference]: With dead ends: 1349 [2019-10-14 23:18:47,419 INFO L226 Difference]: Without dead ends: 682 [2019-10-14 23:18:47,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-14 23:18:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-14 23:18:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-14 23:18:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1075 transitions. [2019-10-14 23:18:47,550 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1075 transitions. Word has length 113 [2019-10-14 23:18:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:47,553 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1075 transitions. [2019-10-14 23:18:47,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:18:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1075 transitions. [2019-10-14 23:18:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:47,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:47,557 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] [2019-10-14 23:18:47,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:47,767 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash 536745362, now seen corresponding path program 1 times [2019-10-14 23:18:47,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:47,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418849576] [2019-10-14 23:18:47,768 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:47,768 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:47,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:48,978 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,255 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:49,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418849576] [2019-10-14 23:18:49,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955379856] [2019-10-14 23:18:49,531 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 23:18:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:50,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:50,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:50,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-14 23:18:50,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061568949] [2019-10-14 23:18:50,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:50,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:50,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:50,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:50,126 INFO L87 Difference]: Start difference. First operand 682 states and 1075 transitions. Second operand 4 states. [2019-10-14 23:18:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:50,303 INFO L93 Difference]: Finished difference Result 1347 states and 2140 transitions. [2019-10-14 23:18:50,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:50,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-14 23:18:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:50,310 INFO L225 Difference]: With dead ends: 1347 [2019-10-14 23:18:50,311 INFO L226 Difference]: Without dead ends: 691 [2019-10-14 23:18:50,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-14 23:18:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2019-10-14 23:18:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2019-10-14 23:18:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1089 transitions. [2019-10-14 23:18:50,355 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1089 transitions. Word has length 113 [2019-10-14 23:18:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:50,355 INFO L462 AbstractCegarLoop]: Abstraction has 691 states and 1089 transitions. [2019-10-14 23:18:50,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1089 transitions. [2019-10-14 23:18:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 23:18:50,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:50,359 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:50,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:50,571 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1841317292, now seen corresponding path program 1 times [2019-10-14 23:18:50,571 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:50,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142479625] [2019-10-14 23:18:50,572 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:50,572 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:50,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,492 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:51,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142479625] [2019-10-14 23:18:51,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723719300] [2019-10-14 23:18:51,852 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 23:18:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:52,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:52,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:52,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:18:52,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696208071] [2019-10-14 23:18:52,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:52,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:52,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:52,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:52,467 INFO L87 Difference]: Start difference. First operand 691 states and 1089 transitions. Second operand 7 states. [2019-10-14 23:18:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:52,680 INFO L93 Difference]: Finished difference Result 1365 states and 2165 transitions. [2019-10-14 23:18:52,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:52,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-14 23:18:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:52,697 INFO L225 Difference]: With dead ends: 1365 [2019-10-14 23:18:52,697 INFO L226 Difference]: Without dead ends: 702 [2019-10-14 23:18:52,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-14 23:18:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2019-10-14 23:18:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-14 23:18:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1101 transitions. [2019-10-14 23:18:52,750 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1101 transitions. Word has length 115 [2019-10-14 23:18:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:52,751 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1101 transitions. [2019-10-14 23:18:52,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1101 transitions. [2019-10-14 23:18:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:52,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:52,757 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] [2019-10-14 23:18:52,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:52,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1924153805, now seen corresponding path program 1 times [2019-10-14 23:18:52,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:52,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706077526] [2019-10-14 23:18:52,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:52,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:52,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,971 WARN L191 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,175 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:54,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706077526] [2019-10-14 23:18:54,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765470204] [2019-10-14 23:18:54,449 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 23:18:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:54,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:55,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:55,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:18:55,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984327787] [2019-10-14 23:18:55,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:55,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:55,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:55,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:55,093 INFO L87 Difference]: Start difference. First operand 698 states and 1101 transitions. Second operand 4 states. [2019-10-14 23:18:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:55,208 INFO L93 Difference]: Finished difference Result 1381 states and 2190 transitions. [2019-10-14 23:18:55,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:55,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-14 23:18:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:55,218 INFO L225 Difference]: With dead ends: 1381 [2019-10-14 23:18:55,218 INFO L226 Difference]: Without dead ends: 709 [2019-10-14 23:18:55,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-10-14 23:18:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2019-10-14 23:18:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-14 23:18:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-14 23:18:55,258 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-14 23:18:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:55,259 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-14 23:18:55,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-14 23:18:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:55,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:55,264 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] [2019-10-14 23:18:55,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:55,482 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash 546326437, now seen corresponding path program 1 times [2019-10-14 23:18:55,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:55,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595370791] [2019-10-14 23:18:55,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,443 WARN L191 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:18:56,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595370791] [2019-10-14 23:18:56,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567282279] [2019-10-14 23:18:56,792 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 23:18:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:57,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:57,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:57,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-14 23:18:57,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166400612] [2019-10-14 23:18:57,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:57,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:57,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:57,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:57,566 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 7 states. [2019-10-14 23:18:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:57,744 INFO L93 Difference]: Finished difference Result 1382 states and 2181 transitions. [2019-10-14 23:18:57,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:57,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-14 23:18:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:57,752 INFO L225 Difference]: With dead ends: 1382 [2019-10-14 23:18:57,752 INFO L226 Difference]: Without dead ends: 716 [2019-10-14 23:18:57,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2019-10-14 23:18:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 707. [2019-10-14 23:18:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-14 23:18:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-14 23:18:57,788 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-14 23:18:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:57,790 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-14 23:18:57,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-14 23:18:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-14 23:18:57,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:57,797 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] [2019-10-14 23:18:58,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:58,005 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:58,006 INFO L82 PathProgramCache]: Analyzing trace with hash 736421213, now seen corresponding path program 1 times [2019-10-14 23:18:58,006 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:58,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931666022] [2019-10-14 23:18:58,006 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,483 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,703 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:00,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931666022] [2019-10-14 23:19:00,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442103183] [2019-10-14 23:19:00,014 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 23:19:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:00,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:00,868 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:00,869 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:00,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865051786] [2019-10-14 23:19:00,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:00,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:00,871 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 4 states. [2019-10-14 23:19:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:01,200 INFO L93 Difference]: Finished difference Result 1415 states and 2251 transitions. [2019-10-14 23:19:01,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:01,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-14 23:19:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:01,210 INFO L225 Difference]: With dead ends: 1415 [2019-10-14 23:19:01,210 INFO L226 Difference]: Without dead ends: 749 [2019-10-14 23:19:01,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2019-10-14 23:19:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2019-10-14 23:19:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-14 23:19:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1182 transitions. [2019-10-14 23:19:01,245 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1182 transitions. Word has length 119 [2019-10-14 23:19:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:01,246 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1182 transitions. [2019-10-14 23:19:01,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1182 transitions. [2019-10-14 23:19:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:19:01,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:01,249 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:01,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:01,457 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:01,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:01,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1108082173, now seen corresponding path program 1 times [2019-10-14 23:19:01,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:01,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612024183] [2019-10-14 23:19:01,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:01,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:01,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,409 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:02,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612024183] [2019-10-14 23:19:02,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647073982] [2019-10-14 23:19:02,806 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 23:19:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:03,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:03,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:03,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:03,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651064285] [2019-10-14 23:19:03,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:03,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:03,382 INFO L87 Difference]: Start difference. First operand 746 states and 1182 transitions. Second operand 4 states. [2019-10-14 23:19:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:03,470 INFO L93 Difference]: Finished difference Result 1439 states and 2297 transitions. [2019-10-14 23:19:03,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:03,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-14 23:19:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:03,478 INFO L225 Difference]: With dead ends: 1439 [2019-10-14 23:19:03,478 INFO L226 Difference]: Without dead ends: 746 [2019-10-14 23:19:03,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-14 23:19:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-14 23:19:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-14 23:19:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1177 transitions. [2019-10-14 23:19:03,514 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1177 transitions. Word has length 121 [2019-10-14 23:19:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:03,515 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1177 transitions. [2019-10-14 23:19:03,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1177 transitions. [2019-10-14 23:19:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:19:03,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:03,518 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:03,725 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:03,726 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash -546984174, now seen corresponding path program 1 times [2019-10-14 23:19:03,727 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:03,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793056219] [2019-10-14 23:19:03,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,669 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:04,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793056219] [2019-10-14 23:19:04,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574946800] [2019-10-14 23:19:04,963 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 23:19:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:05,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:19:05,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:05,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:05,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759829760] [2019-10-14 23:19:05,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:05,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:05,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:05,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:05,651 INFO L87 Difference]: Start difference. First operand 746 states and 1177 transitions. Second operand 7 states. [2019-10-14 23:19:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:05,837 INFO L93 Difference]: Finished difference Result 1407 states and 2229 transitions. [2019-10-14 23:19:05,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:05,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-14 23:19:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:05,846 INFO L225 Difference]: With dead ends: 1407 [2019-10-14 23:19:05,846 INFO L226 Difference]: Without dead ends: 760 [2019-10-14 23:19:05,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-14 23:19:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-10-14 23:19:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-14 23:19:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1188 transitions. [2019-10-14 23:19:05,902 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1188 transitions. Word has length 122 [2019-10-14 23:19:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:05,905 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1188 transitions. [2019-10-14 23:19:05,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1188 transitions. [2019-10-14 23:19:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:05,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:05,910 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 23:19:06,130 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:06,130 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:06,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1594119675, now seen corresponding path program 1 times [2019-10-14 23:19:06,131 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:06,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567926202] [2019-10-14 23:19:06,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:06,132 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:06,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,241 WARN L191 SmtUtils]: Spent 995.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:07,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567926202] [2019-10-14 23:19:07,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918781555] [2019-10-14 23:19:07,564 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 23:19:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:08,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:19:08,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:08,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:08,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645378849] [2019-10-14 23:19:08,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:08,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:08,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:08,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:08,268 INFO L87 Difference]: Start difference. First operand 753 states and 1188 transitions. Second operand 7 states. [2019-10-14 23:19:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:08,435 INFO L93 Difference]: Finished difference Result 1407 states and 2228 transitions. [2019-10-14 23:19:08,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:08,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-14 23:19:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:08,444 INFO L225 Difference]: With dead ends: 1407 [2019-10-14 23:19:08,444 INFO L226 Difference]: Without dead ends: 760 [2019-10-14 23:19:08,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-14 23:19:08,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 750. [2019-10-14 23:19:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:19:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1182 transitions. [2019-10-14 23:19:08,479 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1182 transitions. Word has length 123 [2019-10-14 23:19:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:08,480 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1182 transitions. [2019-10-14 23:19:08,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1182 transitions. [2019-10-14 23:19:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:08,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:08,483 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:08,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:08,699 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1778368231, now seen corresponding path program 1 times [2019-10-14 23:19:08,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:08,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904350146] [2019-10-14 23:19:08,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:08,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:08,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,879 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:10,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904350146] [2019-10-14 23:19:10,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34364806] [2019-10-14 23:19:10,162 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 23:19:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:10,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:10,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:10,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:10,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185621665] [2019-10-14 23:19:10,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:10,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:10,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:10,745 INFO L87 Difference]: Start difference. First operand 750 states and 1182 transitions. Second operand 4 states. [2019-10-14 23:19:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:10,819 INFO L93 Difference]: Finished difference Result 1443 states and 2297 transitions. [2019-10-14 23:19:10,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:19:10,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-14 23:19:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:10,826 INFO L225 Difference]: With dead ends: 1443 [2019-10-14 23:19:10,826 INFO L226 Difference]: Without dead ends: 750 [2019-10-14 23:19:10,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-14 23:19:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-14 23:19:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-14 23:19:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1179 transitions. [2019-10-14 23:19:10,863 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1179 transitions. Word has length 123 [2019-10-14 23:19:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:10,863 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1179 transitions. [2019-10-14 23:19:10,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1179 transitions. [2019-10-14 23:19:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:19:10,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:10,867 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 23:19:11,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:11,080 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash -478392882, now seen corresponding path program 1 times [2019-10-14 23:19:11,082 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:11,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027262311] [2019-10-14 23:19:11,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat