./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f6fb2bb1 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/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.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 e334e85dd18553afecc96b27cf49a003304cbca8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 19:55:10,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:55:10,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:55:10,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:55:10,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:55:10,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:55:10,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:55:10,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:55:10,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:55:10,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:55:10,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:55:10,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:55:10,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:55:10,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:55:10,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:55:10,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:55:10,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:55:10,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:55:10,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:55:10,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:55:10,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:55:10,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:55:10,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:55:10,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:55:10,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:55:10,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:55:10,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:55:10,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:55:10,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:55:10,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:55:10,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:55:10,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:55:10,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:55:10,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:55:10,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:55:10,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:55:10,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:55:10,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:55:10,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:55:10,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:55:10,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:55:10,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 19:55:10,365 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:55:10,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:55:10,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:55:10,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:55:10,370 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:55:10,370 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 19:55:10,371 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 19:55:10,371 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 19:55:10,372 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 19:55:10,372 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 19:55:10,375 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 19:55:10,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:55:10,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:55:10,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:55:10,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:55:10,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 19:55:10,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 19:55:10,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 19:55:10,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 19:55:10,377 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 19:55:10,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:55:10,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 19:55:10,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:55:10,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:55:10,379 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 19:55:10,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:55:10,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 19:55:10,380 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 19:55:10,382 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 19:55:10,382 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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-11-19 19:55:10,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:55:10,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:55:10,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:55:10,724 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:55:10,725 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:55:10,726 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 19:55:10,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4eb80664/fa55b8ad55e7409bb4f47f14f2df3f46/FLAG56ec7f1cf [2019-11-19 19:55:11,261 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:55:11,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 19:55:11,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4eb80664/fa55b8ad55e7409bb4f47f14f2df3f46/FLAG56ec7f1cf [2019-11-19 19:55:11,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4eb80664/fa55b8ad55e7409bb4f47f14f2df3f46 [2019-11-19 19:55:11,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:55:11,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 19:55:11,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:55:11,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:55:11,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:55:11,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:11,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a552a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11, skipping insertion in model container [2019-11-19 19:55:11,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:11,679 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:55:11,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:55:11,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:55:11,883 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:55:11,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:55:11,916 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:55:11,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11 WrapperNode [2019-11-19 19:55:11,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:55:11,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 19:55:11,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 19:55:11,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 19:55:11,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:11,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 19:55:12,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:55:12,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:55:12,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:55:12,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (1/1) ... [2019-11-19 19:55:12,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:55:12,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:55:12,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:55:12,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:55:12,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (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 [2019-11-19 19:55:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:55:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:55:12,238 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:55:12,238 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 19:55:12,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:12 BoogieIcfgContainer [2019-11-19 19:55:12,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:55:12,240 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 19:55:12,240 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 19:55:12,244 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 19:55:12,245 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:12,245 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:55:11" (1/3) ... [2019-11-19 19:55:12,247 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c0c33b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:55:12, skipping insertion in model container [2019-11-19 19:55:12,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:12,247 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:11" (2/3) ... [2019-11-19 19:55:12,247 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c0c33b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:55:12, skipping insertion in model container [2019-11-19 19:55:12,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 19:55:12,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:12" (3/3) ... [2019-11-19 19:55:12,249 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-19 19:55:12,301 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 19:55:12,302 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 19:55:12,302 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 19:55:12,302 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:55:12,302 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:55:12,302 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 19:55:12,302 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:55:12,305 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 19:55:12,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 19:55:12,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:12,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:12,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:12,343 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 19:55:12,344 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:12,344 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 19:55:12,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 19:55:12,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:12,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:12,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:12,346 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 19:55:12,347 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:12,355 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2019-11-19 19:55:12,356 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2019-11-19 19:55:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:12,364 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-19 19:55:12,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:12,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002689356] [2019-11-19 19:55:12,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-19 19:55:12,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:12,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816763328] [2019-11-19 19:55:12,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,484 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-19 19:55:12,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:12,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779024060] [2019-11-19 19:55:12,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:12,510 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:12,615 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:12,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:12,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:12,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:12,617 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:12,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:12,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:12,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:12,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-19 19:55:12,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:12,620 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:12,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:12,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:12,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:12,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:12,918 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:12,919 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) [2019-11-19 19:55:12,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:12,938 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:12,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:12,952 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) [2019-11-19 19:55:12,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:12,966 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:12,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:12,974 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 [2019-11-19 19:55:12,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:12,989 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 [2019-11-19 19:55:13,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:13,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:13,148 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:13,150 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:13,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:13,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:13,150 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:13,150 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:13,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:13,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:13,151 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-19 19:55:13,151 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:13,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:13,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,287 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:13,294 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,309 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 [2019-11-19 19:55:13,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:13,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:13,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:13,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:13,320 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:13,320 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 19:55:13,326 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,349 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 [2019-11-19 19:55:13,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:13,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:13,352 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:13,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:13,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:13,357 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 19:55:13,363 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) [2019-11-19 19:55:13,374 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 Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:13,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:13,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:13,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:13,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:13,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:13,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 19:55:13,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 19:55:13,388 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 19:55:13,388 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) [2019-11-19 19:55:13,397 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:13,398 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:13,398 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:13,399 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,406 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 19:55:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:13,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:13,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:13,479 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:13,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:13,504 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 [2019-11-19 19:55:13,506 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-19 19:55:13,577 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-19 19:55:13,578 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 [2019-11-19 19:55:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-19 19:55:13,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-19 19:55:13,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:13,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-19 19:55:13,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:13,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-19 19:55:13,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:13,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-19 19:55:13,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:13,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-19 19:55:13,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-19 19:55:13,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-19 19:55:13,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-19 19:55:13,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:13,611 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-19 19:55:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-19 19:55:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-19 19:55:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 19:55:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-19 19:55:13,647 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-19 19:55:13,647 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-19 19:55:13,648 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 19:55:13,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-19 19:55:13,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:13,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:13,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:13,650 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-19 19:55:13,650 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:13,651 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2019-11-19 19:55:13,651 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2019-11-19 19:55:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:13,652 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-19 19:55:13,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:13,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879146161] [2019-11-19 19:55:13,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:13,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879146161] [2019-11-19 19:55:13,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:55:13,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 19:55:13,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84117745] [2019-11-19 19:55:13,743 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 19:55:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-19 19:55:13,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:13,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445149611] [2019-11-19 19:55:13,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:13,776 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:13,804 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:13,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:13,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:13,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:13,805 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:13,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:13,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:13,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:13,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-19 19:55:13,807 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:13,807 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:13,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:13,903 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:13,903 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) [2019-11-19 19:55:13,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:13,911 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 [2019-11-19 19:55:13,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:13,916 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) [2019-11-19 19:55:13,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:13,936 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 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) [2019-11-19 19:55:13,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:13,964 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,105 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:14,108 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:14,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:14,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:14,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:14,109 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:14,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:14,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:14,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-19 19:55:14,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:14,109 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:14,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,223 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:14,223 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-19 19:55:14,238 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 [2019-11-19 19:55:14,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:14,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:14,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:14,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:14,249 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:14,250 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,257 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:14,275 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 [2019-11-19 19:55:14,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:14,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:14,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:14,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:14,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:14,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:14,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 19:55:14,292 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,303 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 19:55:14,304 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 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:14,312 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:14,312 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:14,312 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2019-11-19 19:55:14,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 19:55:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:14,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:14,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:14,347 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:14,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:14,349 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 [2019-11-19 19:55:14,349 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-19 19:55:14,360 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-19 19:55:14,361 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 [2019-11-19 19:55:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-19 19:55:14,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-19 19:55:14,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:14,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-19 19:55:14,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:14,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-19 19:55:14,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:14,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-19 19:55:14,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:14,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-19 19:55:14,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-19 19:55:14,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-19 19:55:14,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-19 19:55:14,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:14,368 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-19 19:55:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-19 19:55:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-19 19:55:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 19:55:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-19 19:55:14,371 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-19 19:55:14,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:55:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 19:55:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 19:55:14,376 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2019-11-19 19:55:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:55:14,388 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-11-19 19:55:14,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:55:14,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-11-19 19:55:14,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:14,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2019-11-19 19:55:14,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-19 19:55:14,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-19 19:55:14,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-19 19:55:14,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:14,392 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-19 19:55:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-19 19:55:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-19 19:55:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-19 19:55:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-19 19:55:14,395 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-19 19:55:14,395 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-19 19:55:14,395 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 19:55:14,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-19 19:55:14,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-19 19:55:14,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:14,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:14,398 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-11-19 19:55:14,398 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 19:55:14,398 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2019-11-19 19:55:14,399 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2019-11-19 19:55:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2019-11-19 19:55:14,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:14,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413255867] [2019-11-19 19:55:14,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 19:55:14,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413255867] [2019-11-19 19:55:14,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39139458] [2019-11-19 19:55:14,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:55:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:14,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 19:55:14,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 19:55:14,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 19:55:14,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-11-19 19:55:14,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870779120] [2019-11-19 19:55:14,497 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 19:55:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-19 19:55:14,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:14,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030719050] [2019-11-19 19:55:14,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:14,506 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:14,535 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:14,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:14,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:14,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:14,536 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:14,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:14,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:14,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-19 19:55:14,537 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:14,537 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:14,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:14,639 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-19 19:55:14,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:14,648 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:14,654 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:14,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:14,669 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 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) [2019-11-19 19:55:14,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:14,697 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 [2019-11-19 19:55:14,910 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:14,913 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:14,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:14,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:14,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:14,914 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:14,914 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:14,914 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:14,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:14,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-19 19:55:14,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:14,917 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:14,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:14,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,011 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:15,012 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-19 19:55:15,029 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 [2019-11-19 19:55:15,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:15,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:15,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:15,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:15,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 19:55:15,035 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,042 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:15,053 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 [2019-11-19 19:55:15,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:15,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:15,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:15,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:15,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:15,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:15,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,070 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 19:55:15,075 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 19:55:15,076 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:15,083 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:15,083 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:15,083 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:15,084 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-11-19 19:55:15,087 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,130 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:15,132 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 [2019-11-19 19:55:15,132 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-19 19:55:15,149 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-19 19:55:15,151 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 [2019-11-19 19:55:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-19 19:55:15,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-19 19:55:15,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,153 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 19:55:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,193 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:15,195 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 [2019-11-19 19:55:15,195 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-19 19:55:15,206 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-19 19:55:15,209 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 [2019-11-19 19:55:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-19 19:55:15,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-19 19:55:15,210 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,211 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 19:55:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,243 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:15,244 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 [2019-11-19 19:55:15,244 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-19 19:55:15,254 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2019-11-19 19:55:15,255 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 [2019-11-19 19:55:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 19:55:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-19 19:55:15,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-19 19:55:15,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-19 19:55:15,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-19 19:55:15,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-11-19 19:55:15,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 19:55:15,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2019-11-19 19:55:15,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-19 19:55:15,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-19 19:55:15,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-19 19:55:15,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:15,261 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-19 19:55:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-19 19:55:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2019-11-19 19:55:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 19:55:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-19 19:55:15,264 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-19 19:55:15,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 19:55:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 19:55:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:55:15,265 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2019-11-19 19:55:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:55:15,276 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-19 19:55:15,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 19:55:15,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-19 19:55:15,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 19:55:15,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2019-11-19 19:55:15,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-19 19:55:15,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-19 19:55:15,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-19 19:55:15,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 19:55:15,279 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-19 19:55:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-19 19:55:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-11-19 19:55:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-19 19:55:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-19 19:55:15,280 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-19 19:55:15,281 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-19 19:55:15,281 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 19:55:15,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-19 19:55:15,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 19:55:15,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 19:55:15,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 19:55:15,282 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 19:55:15,283 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-11-19 19:55:15,283 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2019-11-19 19:55:15,283 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2019-11-19 19:55:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,284 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-11-19 19:55:15,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:15,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88294459] [2019-11-19 19:55:15,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,297 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2019-11-19 19:55:15,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:15,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845715591] [2019-11-19 19:55:15,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,309 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2019-11-19 19:55:15,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 19:55:15,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411761215] [2019-11-19 19:55:15,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 19:55:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:55:15,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 19:55:15,373 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:15,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:15,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:15,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:15,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 19:55:15,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:15,374 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:15,374 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-19 19:55:15,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:15,374 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:15,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,477 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:15,477 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:15,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:15,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:15,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:15,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 19:55:15,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 19:55:15,508 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2019-11-19 19:55:15,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 19:55:15,531 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 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 19:55:15,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 19:55:15,553 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,597 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 19:55:15,599 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 19:55:15,599 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 19:55:15,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 19:55:15,599 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 19:55:15,599 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 19:55:15,599 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,600 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 19:55:15,600 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 19:55:15,600 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-19 19:55:15,600 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 19:55:15,600 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 19:55:15,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 19:55:15,670 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 19:55:15,671 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2019-11-19 19:55:15,676 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 [2019-11-19 19:55:15,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:15,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:15,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:15,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:15,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:15,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:15,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 19:55:15,681 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 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,688 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 [2019-11-19 19:55:15,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 19:55:15,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 19:55:15,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 19:55:15,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 19:55:15,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 19:55:15,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 19:55:15,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 19:55:15,696 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 19:55:15,698 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-19 19:55:15,698 INFO L444 ModelExtractionUtils]: 1 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 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 19:55:15,704 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 19:55:15,704 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 19:55:15,705 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 19:55:15,705 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2019-11-19 19:55:15,707 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 19:55:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:55:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:55:15,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:55:15,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:55:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:55:15,759 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 [2019-11-19 19:55:15,759 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-11-19 19:55:15,788 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2019-11-19 19:55:15,789 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 [2019-11-19 19:55:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-19 19:55:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-19 19:55:15,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-19 19:55:15,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-19 19:55:15,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-19 19:55:15,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 19:55:15,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-11-19 19:55:15,792 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 19:55:15,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 19:55:15,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 19:55:15,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 19:55:15,793 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 19:55:15,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 19:55:15,793 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 19:55:15,794 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 19:55:15,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:55:15 BoogieIcfgContainer [2019-11-19 19:55:15,803 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 19:55:15,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:55:15,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:55:15,804 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:55:15,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:12" (3/4) ... [2019-11-19 19:55:15,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 19:55:15,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:55:15,813 INFO L168 Benchmark]: Toolchain (without parser) took 4151.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:15,814 INFO L168 Benchmark]: CDTParser took 0.33 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. [2019-11-19 19:55:15,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.34 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. [2019-11-19 19:55:15,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:15,822 INFO L168 Benchmark]: Boogie Preprocessor took 16.64 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:15,823 INFO L168 Benchmark]: RCFGBuilder took 213.44 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: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:15,830 INFO L168 Benchmark]: BuchiAutomizer took 3562.71 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.8 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2019-11-19 19:55:15,831 INFO L168 Benchmark]: Witness Printer took 6.95 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. [2019-11-19 19:55:15,839 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 256.34 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 91.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.64 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 213.44 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: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3562.71 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.8 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.95 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 2.8s. 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 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...