./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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 7c08193784b646afd298f73ae6296b7af2e0cac1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:16,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:16,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:16,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:16,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:16,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:16,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:16,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:16,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:16,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:16,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:16,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:16,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:17,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:17,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:17,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:17,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:17,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:17,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:17,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:17,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:17,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:17,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:17,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:17,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:17,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:17,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:17,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:17,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:17,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:17,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:17,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:17,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:17,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:17,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:17,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:17,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:17,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:17,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:17,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:17,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:17,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:17,084 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:17,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:17,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:17,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:17,091 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:17,091 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:17,091 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:17,093 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:17,093 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:17,093 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:17,093 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:17,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:17,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:17,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:17,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:17,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:17,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:17,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:17,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:17,097 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:17,097 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:17,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:17,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:17,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:17,099 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:17,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:17,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:17,100 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:17,101 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:17,102 INFO L138 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 -> 7c08193784b646afd298f73ae6296b7af2e0cac1 [2019-11-28 02:57:17,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:17,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:17,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:17,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:17,428 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:17,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-28 02:57:17,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9681c27/4eade674e6874dcc8d0c4fa869b5f87c/FLAG44d2908f7 [2019-11-28 02:57:17,907 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:17,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-28 02:57:17,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9681c27/4eade674e6874dcc8d0c4fa869b5f87c/FLAG44d2908f7 [2019-11-28 02:57:18,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9681c27/4eade674e6874dcc8d0c4fa869b5f87c [2019-11-28 02:57:18,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:18,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:18,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:18,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:18,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:18,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78418a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18, skipping insertion in model container [2019-11-28 02:57:18,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:18,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:18,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:18,539 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:18,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:18,566 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:18,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18 WrapperNode [2019-11-28 02:57:18,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:18,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:18,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:18,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:18,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:18,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:18,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:18,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:18,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (1/1) ... [2019-11-28 02:57:18,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:18,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:18,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:18,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:18,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (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 [2019-11-28 02:57:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:18,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:18,874 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:18,875 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 02:57:18,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18 BoogieIcfgContainer [2019-11-28 02:57:18,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:18,876 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:18,876 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:18,880 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:18,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:18" (1/3) ... [2019-11-28 02:57:18,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b5cbcfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:18, skipping insertion in model container [2019-11-28 02:57:18,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:18" (2/3) ... [2019-11-28 02:57:18,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b5cbcfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:18, skipping insertion in model container [2019-11-28 02:57:18,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:18,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18" (3/3) ... [2019-11-28 02:57:18,885 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2019-11-28 02:57:18,927 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:18,927 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:18,927 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:18,927 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:18,927 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:18,927 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:18,928 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:18,928 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:18,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:18,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:18,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,970 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:18,970 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:18,970 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:18,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:18,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:18,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,972 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:18,972 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:18,980 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L19-2true [2019-11-28 02:57:18,981 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L21-2true assume !(main_~j~0 <= main_~i~0); 8#L21-3true main_~i~0 := 1 + main_~i~0; 6#L19-2true [2019-11-28 02:57:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:57:18,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19050284] [2019-11-28 02:57:18,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,100 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-28 02:57:19,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:19,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707314910] [2019-11-28 02:57:19,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,119 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-28 02:57:19,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:19,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716186914] [2019-11-28 02:57:19,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:19,137 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:19,287 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-28 02:57:19,307 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:19,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:19,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:19,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:19,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:19,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:19,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:19,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-11-28 02:57:19,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:19,310 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:19,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,551 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:19,552 INFO L404 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 [2019-11-28 02:57:19,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:19,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:19,580 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-11-28 02:57:19,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:19,607 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:19,607 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-11-28 02:57:19,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:19,629 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2019-11-28 02:57:19,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:19,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:19,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:19,758 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:19,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:19,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:19,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:19,759 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:19,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:19,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:19,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2019-11-28 02:57:19,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:19,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:19,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:19,862 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:19,868 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:19,886 INFO L120 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 [2019-11-28 02:57:19,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:19,904 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:19,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 02:57:19,932 INFO L120 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 [2019-11-28 02:57:19,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,941 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:19,941 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,952 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 02:57:19,972 INFO L120 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 [2019-11-28 02:57:19,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:19,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:19,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:19,999 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-28 02:57:19,999 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. 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) [2019-11-28 02:57:20,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:20,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:20,018 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:20,018 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:57:20,025 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:20,091 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:20,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:20,155 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:20,157 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-11-28 02:57:20,268 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 30 states and 48 transitions. Complement of second has 9 states. [2019-11-28 02:57:20,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2019-11-28 02:57:20,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-28 02:57:20,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 02:57:20,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-28 02:57:20,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:20,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 48 transitions. [2019-11-28 02:57:20,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:20,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 13 states and 18 transitions. [2019-11-28 02:57:20,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:57:20,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 02:57:20,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2019-11-28 02:57:20,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:20,287 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-28 02:57:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2019-11-28 02:57:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-28 02:57:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:57:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-28 02:57:20,314 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:20,314 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:20,315 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:20,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-11-28 02:57:20,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:20,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:20,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:20,316 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:20,316 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:20,317 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 83#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-11-28 02:57:20,317 INFO L796 eck$LassoCheckResult]: Loop: 85#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 91#L21-2 assume !(main_~j~0 <= main_~i~0); 88#L21-3 main_~i~0 := 1 + main_~i~0; 84#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 85#L21-2 [2019-11-28 02:57:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 02:57:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195174326] [2019-11-28 02:57:20,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,328 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1506610, now seen corresponding path program 1 times [2019-11-28 02:57:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040266970] [2019-11-28 02:57:20,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2019-11-28 02:57:20,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:20,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175496605] [2019-11-28 02:57:20,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:20,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:20,448 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:20,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:20,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:20,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:20,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:20,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:20,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:20,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-11-28 02:57:20,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:20,450 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:20,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:20,558 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,572 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,580 INFO L440 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,591 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:20,597 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:20,613 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:20,638 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,771 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:20,774 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:20,774 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:20,774 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:20,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:20,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:20,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:20,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:20,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2019-11-28 02:57:20,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:20,775 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:20,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:20,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:20,872 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,878 INFO L120 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 [2019-11-28 02:57:20,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,884 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:20,884 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,903 INFO L120 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 [2019-11-28 02:57:20,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,909 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:20,909 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,931 INFO L120 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 [2019-11-28 02:57:20,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:20,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:20,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:20,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:20,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:20,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:20,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,941 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:20,963 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:20,964 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:20,984 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:20,984 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:20,984 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:20,984 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:20,988 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:57:21,061 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 [2019-11-28 02:57:21,062 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-28 02:57:21,101 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 22 states and 31 transitions. Complement of second has 6 states. [2019-11-28 02:57:21,101 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 [2019-11-28 02:57:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-28 02:57:21,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:21,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 02:57:21,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-28 02:57:21,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2019-11-28 02:57:21,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:57:21,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 22 transitions. [2019-11-28 02:57:21,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-28 02:57:21,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 02:57:21,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2019-11-28 02:57:21,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:21,108 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-28 02:57:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2019-11-28 02:57:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 02:57:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 02:57:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2019-11-28 02:57:21,111 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-28 02:57:21,111 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-28 02:57:21,111 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:21,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2019-11-28 02:57:21,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:57:21,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:21,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:21,113 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:21,113 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:57:21,113 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 159#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-11-28 02:57:21,113 INFO L796 eck$LassoCheckResult]: Loop: 163#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 163#L21-2 [2019-11-28 02:57:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-28 02:57:21,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840646794] [2019-11-28 02:57:21,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-28 02:57:21,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671400541] [2019-11-28 02:57:21,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,136 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,137 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-11-28 02:57:21,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399315743] [2019-11-28 02:57:21,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,154 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,165 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,165 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,165 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:21,165 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-11-28 02:57:21,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,166 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,230 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,230 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,242 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:21,248 INFO L440 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,263 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:21,285 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,468 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:21,470 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,470 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,470 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,470 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,470 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:21,471 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,471 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,471 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,471 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2019-11-28 02:57:21,471 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,471 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,532 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,533 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,560 INFO L120 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 [2019-11-28 02:57:21,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:21,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:21,576 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,589 INFO L120 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 [2019-11-28 02:57:21,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:21,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:21,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:21,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:21,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:21,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:21,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:21,599 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:21,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:21,604 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:21,621 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:21,621 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:21,621 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-11-28 02:57:21,624 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:21,657 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:21,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:21,659 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 [2019-11-28 02:57:21,659 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10 Second operand 2 states. [2019-11-28 02:57:21,677 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 26 states and 38 transitions. Complement of second has 5 states. [2019-11-28 02:57:21,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 02:57:21,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-28 02:57:21,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-28 02:57:21,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 02:57:21,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:21,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 38 transitions. [2019-11-28 02:57:21,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:57:21,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 33 transitions. [2019-11-28 02:57:21,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:21,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 02:57:21,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-11-28 02:57:21,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:21,687 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-28 02:57:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-11-28 02:57:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-28 02:57:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:57:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-11-28 02:57:21,692 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-28 02:57:21,692 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-28 02:57:21,692 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:21,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2019-11-28 02:57:21,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 02:57:21,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:21,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:21,701 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-11-28 02:57:21,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:57:21,702 INFO L794 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~i~0, main_~j~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 230#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 232#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 236#L21-2 assume !(main_~j~0 <= main_~i~0); 245#L21-3 main_~i~0 := 1 + main_~i~0; 243#L19-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 239#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-11-28 02:57:21,702 INFO L796 eck$LassoCheckResult]: Loop: 238#L21-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := 1 + main_~j~0; 238#L21-2 [2019-11-28 02:57:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 2 times [2019-11-28 02:57:21,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563828665] [2019-11-28 02:57:21,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,746 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-28 02:57:21,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791954180] [2019-11-28 02:57:21,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,762 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:21,763 INFO L82 PathProgramCache]: Analyzing trace with hash 780807227, now seen corresponding path program 3 times [2019-11-28 02:57:21,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:21,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120013574] [2019-11-28 02:57:21,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:21,797 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:21,809 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:21,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:21,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:21,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:21,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:21,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:21,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:21,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:21,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-11-28 02:57:21,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:21,811 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:21,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:21,860 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:21,861 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:21,871 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:21,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:21,882 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,020 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:22,022 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:22,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:22,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:22,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:22,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:22,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:22,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:22,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2019-11-28 02:57:22,023 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:22,023 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:22,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:22,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:22,080 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,091 INFO L120 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 [2019-11-28 02:57:22,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:22,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:22,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:22,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:22,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:22,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:22,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:22,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:22,103 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:22,103 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:22,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:22,109 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:22,109 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:22,109 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [] [2019-11-28 02:57:22,111 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,139 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:22,140 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 [2019-11-28 02:57:22,140 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 02:57:22,153 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-11-28 02:57:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 02:57:22,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:22,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,155 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,214 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:22,215 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 02:57:22,215 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 02:57:22,228 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 24 states and 35 transitions. Complement of second has 5 states. [2019-11-28 02:57:22,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 02:57:22,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:22,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,231 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:22,263 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:22,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:22,264 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 02:57:22,264 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 02:57:22,274 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 4 states. [2019-11-28 02:57:22,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-28 02:57:22,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:22,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-28 02:57:22,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 02:57:22,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:22,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2019-11-28 02:57:22,278 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:22,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-28 02:57:22,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:22,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:22,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:22,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:22,278 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,278 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,279 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:22,279 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:57:22,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:22,279 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:22,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:22,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:22 BoogieIcfgContainer [2019-11-28 02:57:22,285 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:22,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:22,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:22,286 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:22,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:18" (3/4) ... [2019-11-28 02:57:22,289 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:22,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:22,291 INFO L168 Benchmark]: Toolchain (without parser) took 3961.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,291 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.21 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,293 INFO L168 Benchmark]: Boogie Preprocessor took 15.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,294 INFO L168 Benchmark]: RCFGBuilder took 203.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,295 INFO L168 Benchmark]: BuchiAutomizer took 3408.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -75.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:22,295 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:22,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.21 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 88.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3408.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -75.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. 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 (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 32 SDslu, 9 SDs, 0 SdLazy, 50 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax191 hnf99 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...