./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c 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/loop-invgen/fragtest_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash a94bf9d893e116ed4626eae9cec69d948eb5bc31 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:50:17,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:50:17,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:50:17,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:50:17,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:50:17,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:50:17,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:50:17,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:50:17,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:50:17,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:50:17,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:50:17,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:50:17,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:50:17,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:50:17,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:50:17,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:50:17,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:50:17,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:50:17,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:50:17,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:50:17,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:50:17,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:50:17,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:50:17,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:50:17,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:50:17,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:50:17,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:50:17,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:50:17,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:50:17,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:50:17,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:50:17,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:50:17,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:50:17,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:50:17,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:50:17,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:50:17,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:50:17,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:50:17,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:50:17,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:50:17,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:50:17,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:50:17,914 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:50:17,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:50:17,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:50:17,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:50:17,916 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:50:17,916 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:50:17,916 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:50:17,916 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:50:17,917 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:50:17,917 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:50:17,917 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:50:17,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:50:17,917 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:50:17,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:50:17,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:50:17,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:50:17,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:50:17,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:50:17,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:50:17,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:50:17,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:50:17,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:50:17,919 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:50:17,920 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:50:17,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:50:17,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:50:17,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:50:17,921 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:50:17,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:50:17,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:50:17,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:50:17,921 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:50:17,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:50:17,923 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a94bf9d893e116ed4626eae9cec69d948eb5bc31 [2019-11-28 20:50:18,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:50:18,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:50:18,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:50:18,263 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:50:18,264 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:50:18,265 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-11-28 20:50:18,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a431c41cd/9047be0d05a24acbbe14eaec74b4bfc6/FLAGc719b5f4b [2019-11-28 20:50:18,708 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:50:18,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-11-28 20:50:18,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a431c41cd/9047be0d05a24acbbe14eaec74b4bfc6/FLAGc719b5f4b [2019-11-28 20:50:19,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a431c41cd/9047be0d05a24acbbe14eaec74b4bfc6 [2019-11-28 20:50:19,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:50:19,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:50:19,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:19,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:50:19,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:50:19,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f3499a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19, skipping insertion in model container [2019-11-28 20:50:19,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:50:19,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:50:19,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:19,387 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:50:19,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:19,416 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:50:19,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19 WrapperNode [2019-11-28 20:50:19,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:19,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:19,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:50:19,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:50:19,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:19,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:50:19,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:50:19,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:50:19,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (1/1) ... [2019-11-28 20:50:19,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:50:19,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:50:19,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:50:19,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:50:19,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (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 20:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:50:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:50:19,832 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:50:19,833 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 20:50:19,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:19 BoogieIcfgContainer [2019-11-28 20:50:19,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:50:19,835 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:50:19,835 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:50:19,839 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:50:19,840 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:19,840 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:50:19" (1/3) ... [2019-11-28 20:50:19,841 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e5a4d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:19, skipping insertion in model container [2019-11-28 20:50:19,841 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:19,841 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:19" (2/3) ... [2019-11-28 20:50:19,842 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e5a4d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:19, skipping insertion in model container [2019-11-28 20:50:19,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:19,842 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:19" (3/3) ... [2019-11-28 20:50:19,844 INFO L371 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2019-11-28 20:50:19,928 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:50:19,929 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:50:19,929 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:50:19,929 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:50:19,929 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:50:19,929 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:50:19,930 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:50:19,930 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:50:19,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-28 20:50:19,996 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2019-11-28 20:50:19,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:19,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:20,003 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:50:20,004 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:20,004 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:50:20,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-28 20:50:20,007 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2019-11-28 20:50:20,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:20,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:20,007 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:50:20,008 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:20,016 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2019-11-28 20:50:20,016 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2;main_~i~0 := 1 + main_~i~0; 3#L17-2true [2019-11-28 20:50:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,026 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:50:20,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049805685] [2019-11-28 20:50:20,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,129 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-11-28 20:50:20,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403072047] [2019-11-28 20:50:20,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 20:50:20,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662753689] [2019-11-28 20:50:20,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,215 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:20,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:20,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:20,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:20,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:20,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:20,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:20,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2019-11-28 20:50:20,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:20,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:20,244 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 20:50:20,262 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 20:50:20,340 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:20,340 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 20:50:20,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:20,346 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:20,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:20,373 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:20,374 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:20,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:20,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:20,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:20,375 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:20,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:20,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:20,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2019-11-28 20:50:20,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:20,377 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:20,378 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 20:50:20,390 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 20:50:20,433 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:20,439 INFO L489 LassoAnalysis]: Using template 'affine'. 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 20:50:20,450 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 20:50:20,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:20,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:20,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:20,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:20,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:20,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:20,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:50:20,460 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:20,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:50:20,472 INFO L444 ModelExtractionUtils]: 0 out of 3 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 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 20:50:20,479 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:20,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:20,480 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:20,482 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2019-11-28 20:50:20,489 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:50:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:20,539 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:20,541 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:20,550 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:20,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:20,552 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 20:50:20,569 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 20:50:20,571 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 2 states. [2019-11-28 20:50:20,622 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 2 states. Result 31 states and 49 transitions. Complement of second has 6 states. [2019-11-28 20:50:20,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-11-28 20:50:20,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2019-11-28 20:50:20,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:20,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-28 20:50:20,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:20,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 20:50:20,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:20,628 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2019-11-28 20:50:20,632 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:50:20,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 12 states and 18 transitions. [2019-11-28 20:50:20,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 20:50:20,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 20:50:20,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18 transitions. [2019-11-28 20:50:20,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:20,637 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-28 20:50:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 18 transitions. [2019-11-28 20:50:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 20:50:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:50:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-28 20:50:20,665 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-28 20:50:20,665 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-28 20:50:20,665 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:50:20,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-28 20:50:20,666 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 20:50:20,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:20,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:20,667 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:50:20,667 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:20,667 INFO L794 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 76#L17-2 assume !(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2; 77#L17-3 assume !(main_~i~0 > main_~pvlen~0); 87#L20-1 main_~i~0 := 0; 84#L24-2 [2019-11-28 20:50:20,667 INFO L796 eck$LassoCheckResult]: Loop: 84#L24-2 assume !!(0 != main_#t~nondet3 && main_~i~0 <= 1000000);havoc main_#t~nondet3;main_~tmp___1~0 := main_~i~0;main_~i~0 := 1 + main_~i~0;main_~k~0 := 1 + main_~k~0; 84#L24-2 [2019-11-28 20:50:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash 961578, now seen corresponding path program 1 times [2019-11-28 20:50:20,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282988213] [2019-11-28 20:50:20,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,682 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash 60, now seen corresponding path program 1 times [2019-11-28 20:50:20,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160798757] [2019-11-28 20:50:20,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,692 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:20,693 INFO L82 PathProgramCache]: Analyzing trace with hash 29808947, now seen corresponding path program 1 times [2019-11-28 20:50:20,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:20,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839821702] [2019-11-28 20:50:20,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:20,708 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:20,742 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:20,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:20,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:20,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:20,743 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:20,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:20,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:20,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2019-11-28 20:50:20,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:20,744 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:20,745 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 20:50:20,760 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 20:50:20,764 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 20:50:20,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:20,839 INFO L404 LassoAnalysis]: Checking for nontermination... 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 20:50:20,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:20,854 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:50:20,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:20,877 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,895 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:20,900 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:20,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:20,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:20,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:20,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:20,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:20,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:20,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:20,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2019-11-28 20:50:20,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:20,902 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:20,904 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 20:50:20,917 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 20:50:20,922 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 20:50:20,986 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:20,987 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,003 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 20:50:21,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:21,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:21,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:21,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:21,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:21,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:21,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:50:21,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:21,020 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:50:21,020 INFO L444 ModelExtractionUtils]: 1 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,033 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:21,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:21,034 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:21,034 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2019-11-28 20:50:21,037 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:50:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:21,064 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:21,065 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:21,074 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:21,075 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:21,075 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 20:50:21,075 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 20:50:21,076 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 2 states. [2019-11-28 20:50:21,095 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 28 states and 39 transitions. Complement of second has 6 states. [2019-11-28 20:50:21,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-28 20:50:21,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-28 20:50:21,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:21,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 20:50:21,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:21,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 20:50:21,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:21,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2019-11-28 20:50:21,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:50:21,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 16 states and 22 transitions. [2019-11-28 20:50:21,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-28 20:50:21,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-28 20:50:21,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-11-28 20:50:21,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:21,102 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-11-28 20:50:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-11-28 20:50:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-28 20:50:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 20:50:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2019-11-28 20:50:21,105 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-11-28 20:50:21,105 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-11-28 20:50:21,105 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:50:21,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2019-11-28 20:50:21,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 20:50:21,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:21,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:21,107 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:50:21,107 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:50:21,107 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L17-2 assume !(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2; 153#L17-3 assume !(main_~i~0 > main_~pvlen~0); 164#L20-1 main_~i~0 := 0; 160#L24-2 assume !(0 != main_#t~nondet3 && main_~i~0 <= 1000000);havoc main_#t~nondet3; 155#L24-3 main_~j~0 := 0;main_~n~0 := main_~i~0; 156#L31-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 163#L4 assume !(0 == __VERIFIER_assert_~cond); 158#L4-2 [2019-11-28 20:50:21,108 INFO L796 eck$LassoCheckResult]: Loop: 158#L4-2 main_~k~0 := main_~k~0 - 1;main_~i~0 := main_~i~0 - 1;main_~j~0 := 1 + main_~j~0; 162#L36 assume !(main_~j~0 >= main_~n~0); 165#L31-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 166#L4 assume !(0 == __VERIFIER_assert_~cond); 158#L4-2 [2019-11-28 20:50:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1019916713, now seen corresponding path program 1 times [2019-11-28 20:50:21,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:21,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420643103] [2019-11-28 20:50:21,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:21,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2528781, now seen corresponding path program 1 times [2019-11-28 20:50:21,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:21,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117240709] [2019-11-28 20:50:21,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:21,143 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1891682659, now seen corresponding path program 1 times [2019-11-28 20:50:21,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:21,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561551174] [2019-11-28 20:50:21,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:21,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561551174] [2019-11-28 20:50:21,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:50:21,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:50:21,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257321571] [2019-11-28 20:50:21,301 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:21,302 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:21,302 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:21,302 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:21,302 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:21,302 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,302 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:21,302 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:21,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2019-11-28 20:50:21,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:21,303 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:21,305 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 20:50:21,312 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 20:50:21,316 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 20:50:21,409 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:21,410 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 20:50:21,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:21,423 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 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 20:50:21,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:21,442 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 20:50:21,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:21,775 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:21,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:21,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:21,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:21,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:21,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:21,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:21,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2019-11-28 20:50:21,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:21,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:21,779 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 20:50:21,792 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 20:50:21,815 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 20:50:21,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:21,889 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 20:50:21,898 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 20:50:21,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:21,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:21,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:21,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:21,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:21,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:21,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:21,910 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 20:50:21,910 INFO L444 ModelExtractionUtils]: 0 out of 4 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:50:21,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:21,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:21,916 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:21,916 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-28 20:50:21,925 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:21,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:21,964 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:21,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:21,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:21,972 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:22,026 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 20:50:22,027 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 20:50:22,027 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-28 20:50:22,048 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2019-11-28 20:50:22,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:50:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2019-11-28 20:50:22,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-28 20:50:22,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:22,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-28 20:50:22,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:22,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-28 20:50:22,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:22,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 33 transitions. [2019-11-28 20:50:22,054 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:22,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 0 states and 0 transitions. [2019-11-28 20:50:22,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:50:22,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:50:22,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:50:22,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:22,055 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:22,055 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:22,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:50:22,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:50:22,059 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-28 20:50:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:22,063 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 20:50:22,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:50:22,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 20:50:22,064 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:22,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:50:22,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:50:22,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:50:22,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:50:22,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:22,064 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:22,065 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:22,065 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:22,065 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:50:22,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:50:22,065 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:22,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:50:22,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:50:22 BoogieIcfgContainer [2019-11-28 20:50:22,073 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:50:22,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:50:22,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:50:22,074 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:50:22,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:19" (3/4) ... [2019-11-28 20:50:22,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:50:22,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:50:22,081 INFO L168 Benchmark]: Toolchain (without parser) took 2978.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 956.3 MB in the beginning and 900.3 MB in the end (delta: 56.0 MB). Peak memory consumption was 181.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:22,082 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:22,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.30 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 20:50:22,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:22,084 INFO L168 Benchmark]: Boogie Preprocessor took 40.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:22,085 INFO L168 Benchmark]: RCFGBuilder took 280.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:22,086 INFO L168 Benchmark]: BuchiAutomizer took 2237.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.3 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:22,087 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 1.2 GB. Free memory is still 900.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:22,091 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.30 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 93.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 280.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2237.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.3 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.03 ms. Allocated memory is still 1.2 GB. Free memory is still 900.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function n + -1 * j and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 26 SDslu, 9 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf99 lsp64 ukn100 mio100 lsp100 div100 bol100 ite112 ukn100 eq170 hnf91 smp84 dnf100 smp100 tf110 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...