./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:16:14,040 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:16:14,042 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:16:14,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:16:14,063 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:16:14,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:16:14,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:16:14,067 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:16:14,069 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:16:14,069 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:16:14,071 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:16:14,071 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:16:14,072 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:16:14,073 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:16:14,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:16:14,077 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:16:14,077 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:16:14,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:16:14,081 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:16:14,083 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:16:14,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:16:14,085 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:16:14,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:16:14,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:16:14,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:16:14,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:16:14,090 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:16:14,091 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:16:14,092 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:16:14,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:16:14,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:16:14,094 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:16:14,095 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:16:14,095 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:16:14,096 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:16:14,097 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:16:14,097 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:16:14,115 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:16:14,115 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:16:14,116 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:16:14,117 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:16:14,117 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:16:14,117 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:16:14,117 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:16:14,117 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:16:14,118 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:16:14,118 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:16:14,118 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:16:14,118 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:16:14,118 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:16:14,118 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:16:14,119 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:16:14,120 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:16:14,120 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:16:14,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:16:14,120 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:16:14,120 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:16:14,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:16:14,121 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:16:14,121 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:16:14,122 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:16:14,122 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2018-11-28 23:16:14,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:16:14,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:16:14,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:16:14,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:16:14,200 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:16:14,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c [2018-11-28 23:16:14,276 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711dd1621/a53c43c0706f4317baf3020918b74ba8/FLAG02d35d859 [2018-11-28 23:16:14,737 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:16:14,738 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/MinusUserDefined_true-termination_true-no-overflow.c [2018-11-28 23:16:14,745 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711dd1621/a53c43c0706f4317baf3020918b74ba8/FLAG02d35d859 [2018-11-28 23:16:15,110 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711dd1621/a53c43c0706f4317baf3020918b74ba8 [2018-11-28 23:16:15,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:16:15,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:16:15,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:15,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:16:15,122 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:16:15,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a3633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15, skipping insertion in model container [2018-11-28 23:16:15,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:16:15,159 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:16:15,405 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:15,414 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:16:15,437 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:15,461 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:16:15,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15 WrapperNode [2018-11-28 23:16:15,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:15,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:15,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:16:15,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:16:15,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:15,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:16:15,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:16:15,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:16:15,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (1/1) ... [2018-11-28 23:16:15,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:16:15,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:16:15,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:16:15,548 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:16:15,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:16:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:16:16,031 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:16:16,031 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-28 23:16:16,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:16 BoogieIcfgContainer [2018-11-28 23:16:16,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:16:16,033 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:16:16,033 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:16:16,041 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:16:16,042 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:16,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:16:15" (1/3) ... [2018-11-28 23:16:16,045 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427049fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:16, skipping insertion in model container [2018-11-28 23:16:16,045 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:16,045 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:15" (2/3) ... [2018-11-28 23:16:16,046 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427049fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:16, skipping insertion in model container [2018-11-28 23:16:16,047 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:16,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:16" (3/3) ... [2018-11-28 23:16:16,051 INFO L375 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined_true-termination_true-no-overflow.c [2018-11-28 23:16:16,195 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:16:16,198 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:16:16,199 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:16:16,199 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:16:16,200 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:16:16,200 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:16:16,200 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:16:16,200 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:16:16,200 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:16:16,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:16,276 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2018-11-28 23:16:16,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:16,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:16,285 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:16,286 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:16,286 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:16:16,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:16,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2018-11-28 23:16:16,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:16,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:16,288 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:16,289 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:16,299 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-2true [2018-11-28 23:16:16,299 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-2true [2018-11-28 23:16:16,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:16:16,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,435 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2018-11-28 23:16:16,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:16:16,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,557 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:16,558 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:16,558 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:16,559 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:16,559 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:16,559 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:16,559 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:16,560 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:16,560 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:16,560 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:16,560 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:16,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:16,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:16,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:16,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:16,943 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:16,944 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:16,950 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:16,950 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:16,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:16,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:17,005 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:17,008 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:17,008 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:17,008 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:17,008 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:17,008 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:17,008 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,009 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:17,009 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:17,009 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:17,009 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:17,009 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:17,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,419 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:17,425 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:17,427 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:17,429 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:17,429 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:17,430 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:17,430 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:17,430 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:17,434 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:17,434 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:17,445 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:17,452 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:17,453 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:17,456 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:17,456 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:17,457 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:17,458 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:16:17,460 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:17,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:17,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:17,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:17,571 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:17,573 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2018-11-28 23:16:17,695 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 23 states and 39 transitions. Complement of second has 5 states. [2018-11-28 23:16:17,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:16:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-11-28 23:16:17,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2018-11-28 23:16:17,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:17,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-28 23:16:17,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:17,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:16:17,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:17,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2018-11-28 23:16:17,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:17,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2018-11-28 23:16:17,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:16:17,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:16:17,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2018-11-28 23:16:17,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:17,725 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2018-11-28 23:16:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2018-11-28 23:16:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-11-28 23:16:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:16:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2018-11-28 23:16:17,765 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2018-11-28 23:16:17,765 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2018-11-28 23:16:17,766 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:17,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2018-11-28 23:16:17,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:17,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:17,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:17,768 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:16:17,768 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:17,770 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2018-11-28 23:16:17,770 INFO L796 eck$LassoCheckResult]: Loop: 63#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 65#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2018-11-28 23:16:17,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:17,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2018-11-28 23:16:17,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:17,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:17,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2018-11-28 23:16:17,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:17,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:17,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:17,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:17,798 INFO L82 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2018-11-28 23:16:17,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:17,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:17,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:17,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:17,916 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-11-28 23:16:17,941 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:17,941 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:17,942 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:17,942 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:17,942 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:17,942 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,942 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:17,942 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:17,943 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:17,943 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:17,943 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:17,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,096 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:18,096 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,110 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:18,111 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:18,139 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:18,140 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,144 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:18,144 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:18,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:18,249 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:18,251 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:18,251 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:18,252 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:18,252 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:18,252 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:18,252 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,252 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:18,252 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:18,252 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:18,253 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:18,253 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:18,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,475 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 23:16:18,739 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:18,739 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:18,740 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:18,741 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:18,742 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:18,742 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:18,742 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:18,752 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:18,753 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:18,759 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:18,763 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:18,764 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:18,765 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:18,765 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:18,765 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:18,765 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:18,766 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:18,766 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:18,772 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:18,776 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:18,776 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:18,777 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:18,777 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:18,777 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:18,777 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:16:18,779 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:18,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:18,924 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:16:18,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2018-11-28 23:16:19,108 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 7 states. [2018-11-28 23:16:19,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-28 23:16:19,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:16:19,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:16:19,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:16:19,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2018-11-28 23:16:19,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:19,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2018-11-28 23:16:19,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:16:19,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:16:19,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2018-11-28 23:16:19,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:19,123 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2018-11-28 23:16:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2018-11-28 23:16:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 23:16:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 23:16:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2018-11-28 23:16:19,128 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2018-11-28 23:16:19,128 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2018-11-28 23:16:19,128 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:19,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2018-11-28 23:16:19,132 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:19,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:19,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:19,133 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:16:19,133 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:19,133 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 127#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 128#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2018-11-28 23:16:19,133 INFO L796 eck$LassoCheckResult]: Loop: 130#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 131#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2018-11-28 23:16:19,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,136 INFO L82 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2018-11-28 23:16:19,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:19,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:19,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:19,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:19,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:19,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:16:19,527 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:16:19,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2018-11-28 23:16:19,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:19,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:19,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:19,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,623 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:19,623 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:19,624 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:19,624 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:19,624 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:19,624 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,624 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:19,624 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:19,624 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:19,625 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:19,625 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:19,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,817 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:19,818 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:19,828 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:19,850 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:19,851 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,856 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:19,856 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,883 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:19,883 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:19,951 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:19,954 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:19,954 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:19,954 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:19,955 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:19,955 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:19,955 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,956 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:19,956 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:19,956 INFO L131 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:19,956 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:19,956 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:19,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:19,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:20,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:20,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:20,126 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:20,126 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:20,127 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:20,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:20,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:20,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:20,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:20,134 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:20,134 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:20,143 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:20,145 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:20,146 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:20,146 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:20,146 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:20,146 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:20,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:20,147 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:20,147 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:20,151 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:20,157 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:20,157 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:20,157 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:20,157 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:20,158 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:20,158 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:16:20,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:20,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:20,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:20,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:20,306 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:16:20,307 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-11-28 23:16:20,349 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 43 states and 65 transitions. Complement of second has 7 states. [2018-11-28 23:16:20,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:20,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:16:20,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:20,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-28 23:16:20,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:20,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 23:16:20,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:20,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2018-11-28 23:16:20,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:20,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2018-11-28 23:16:20,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:16:20,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:16:20,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2018-11-28 23:16:20,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:20,360 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2018-11-28 23:16:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2018-11-28 23:16:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2018-11-28 23:16:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:16:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2018-11-28 23:16:20,364 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2018-11-28 23:16:20,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:16:20,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:16:20,371 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 5 states. [2018-11-28 23:16:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:20,544 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2018-11-28 23:16:20,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:16:20,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2018-11-28 23:16:20,546 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:20,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2018-11-28 23:16:20,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:20,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:20,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:20,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:20,547 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:20,547 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:20,547 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:20,547 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:20,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:20,548 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:20,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:20,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:20 BoogieIcfgContainer [2018-11-28 23:16:20,555 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:20,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:20,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:20,556 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:20,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:16" (3/4) ... [2018-11-28 23:16:20,562 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:20,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:20,563 INFO L168 Benchmark]: Toolchain (without parser) took 5448.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 951.4 MB in the beginning and 870.5 MB in the end (delta: 80.9 MB). Peak memory consumption was 165.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:20,565 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:20,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.52 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:20,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:20,569 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:20,571 INFO L168 Benchmark]: RCFGBuilder took 484.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -127.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:20,572 INFO L168 Benchmark]: BuchiAutomizer took 4522.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.5 MB in the end (delta: 197.5 MB). Peak memory consumption was 197.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:20,577 INFO L168 Benchmark]: Witness Printer took 6.31 ms. Allocated memory is still 1.1 GB. Free memory is still 870.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:20,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.52 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 484.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -127.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4522.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.5 MB in the end (delta: 197.5 MB). Peak memory consumption was 197.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.31 ms. Allocated memory is still 1.1 GB. Free memory is still 870.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...