./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-restricted-15/McCarthyIterative.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 a5e4c58569d8caa47946d30f6cb501096837aef1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:35:29,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:29,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:29,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:29,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:29,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:29,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:29,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:29,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:29,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:29,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:29,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:29,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:29,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:29,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:29,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:29,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:29,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:29,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:29,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:29,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:29,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:29,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:29,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:29,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:29,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:29,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:29,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:29,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:29,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:29,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:29,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:29,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:29,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:29,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:29,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:29,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:29,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:29,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:29,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:29,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:29,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:29,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:29,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:29,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:29,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:29,335 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:29,335 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:29,335 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:29,335 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:29,335 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:29,336 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:29,336 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:29,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:29,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:29,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:29,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:29,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:29,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:29,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:29,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:29,339 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:29,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:29,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:29,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:29,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:29,340 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:29,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:29,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:29,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:29,341 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:29,342 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:29,343 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 -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2020-10-20 06:35:29,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:29,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:29,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:29,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:29,586 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:29,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-10-20 06:35:29,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb077f42/4d038ea174f64fb0995f025f912c76ca/FLAGfa455cee5 [2020-10-20 06:35:30,146 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:30,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2020-10-20 06:35:30,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb077f42/4d038ea174f64fb0995f025f912c76ca/FLAGfa455cee5 [2020-10-20 06:35:30,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb077f42/4d038ea174f64fb0995f025f912c76ca [2020-10-20 06:35:30,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:30,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:30,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:30,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:30,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:30,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec0bf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30, skipping insertion in model container [2020-10-20 06:35:30,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:30,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:30,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:30,809 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:30,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:30,835 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:30,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30 WrapperNode [2020-10-20 06:35:30,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:30,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:30,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:30,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:30,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:30,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:30,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:30,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:30,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (1/1) ... [2020-10-20 06:35:30,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:30,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:30,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:30,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:30,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (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 [2020-10-20 06:35:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:31,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:31,112 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:35:31,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:31 BoogieIcfgContainer [2020-10-20 06:35:31,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:31,120 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:31,121 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:31,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:31,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:31,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:30" (1/3) ... [2020-10-20 06:35:31,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46948753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:31, skipping insertion in model container [2020-10-20 06:35:31,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:31,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:30" (2/3) ... [2020-10-20 06:35:31,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46948753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:31, skipping insertion in model container [2020-10-20 06:35:31,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:31,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:31" (3/3) ... [2020-10-20 06:35:31,130 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2020-10-20 06:35:31,181 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:31,181 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:31,181 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:31,182 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:31,182 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:31,182 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:31,182 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:31,182 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:31,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:31,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:31,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:31,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:31,221 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:31,221 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:31,221 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:31,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:31,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:31,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:31,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:31,222 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:31,222 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:31,229 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 3#L12-2true [2020-10-20 06:35:31,229 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0 > 0); 6#L12true assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 3#L12-2true [2020-10-20 06:35:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:31,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:31,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512893955] [2020-10-20 06:35:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,336 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-20 06:35:31,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:31,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336421568] [2020-10-20 06:35:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,355 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:31,357 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-20 06:35:31,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:31,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743605798] [2020-10-20 06:35:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:31,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:31,381 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:31,457 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:31,459 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:31,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:31,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:31,460 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:31,460 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,460 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:31,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:31,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-10-20 06:35:31,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:31,462 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:31,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,676 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:31,677 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) [2020-10-20 06:35:31,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:31,689 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 [2020-10-20 06:35:31,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:31,699 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:31,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:31,737 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:31,737 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 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 [2020-10-20 06:35:31,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:31,764 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 [2020-10-20 06:35:31,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:31,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:31,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:31,846 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:31,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:31,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:31,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:31,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:31,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:31,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:31,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2020-10-20 06:35:31,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:31,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:31,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:31,972 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 [2020-10-20 06:35:31,980 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 [2020-10-20 06:35:31,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:31,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:31,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:31,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:31,998 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:32,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:32,009 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) [2020-10-20 06:35:32,060 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 [2020-10-20 06:35:32,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:32,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:32,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:32,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:32,072 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:32,073 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,083 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,126 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 [2020-10-20 06:35:32,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:32,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:32,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:32,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:32,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:32,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:32,132 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:32,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:32,155 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:32,155 INFO L444 ModelExtractionUtils]: 0 out of 3 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:32,171 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:32,172 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:32,172 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:32,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,248 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:32,265 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 [2020-10-20 06:35:32,266 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-20 06:35:32,308 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2020-10-20 06:35:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:35:32,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:35:32,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:32,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-20 06:35:32,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-10-20 06:35:32,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:32,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-10-20 06:35:32,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:32,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:35:32,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-20 06:35:32,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:32,337 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-20 06:35:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 06:35:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-20 06:35:32,386 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:32,387 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:32,387 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:32,387 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-20 06:35:32,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:32,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:32,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:32,389 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:35:32,389 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:32,390 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 69#L12-2 assume !!(main_~c~0 > 0); 67#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 63#L12-2 [2020-10-20 06:35:32,390 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~c~0 > 0); 64#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 63#L12-2 [2020-10-20 06:35:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-20 06:35:32,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819207975] [2020-10-20 06:35:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-10-20 06:35:32,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006653701] [2020-10-20 06:35:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,450 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-10-20 06:35:32,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114562399] [2020-10-20 06:35:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,509 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:32,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:32,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:32,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:32,509 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:32,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,510 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:32,510 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:32,510 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-10-20 06:35:32,510 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:32,510 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:32,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,615 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:32,615 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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:32,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:32,630 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:32,630 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) [2020-10-20 06:35:32,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:32,677 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) [2020-10-20 06:35:32,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:32,730 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 [2020-10-20 06:35:32,775 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:32,777 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:32,777 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:32,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:32,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:32,778 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:32,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:32,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:32,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2020-10-20 06:35:32,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:32,779 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:32,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:32,850 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) [2020-10-20 06:35:32,864 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 [2020-10-20 06:35:32,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:32,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:32,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:32,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:32,870 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:32,871 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 [2020-10-20 06:35:32,882 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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,926 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 [2020-10-20 06:35:32,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:32,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:32,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:32,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:32,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:32,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:32,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:32,933 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:32,937 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:35:32,937 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 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 [2020-10-20 06:35:32,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:32,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:32,942 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:32,942 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2020-10-20 06:35:32,965 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:32,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,999 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:33,011 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:35:33,011 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:33,037 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-10-20 06:35:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:35:33,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:33,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:33,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-20 06:35:33,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-10-20 06:35:33,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:33,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-10-20 06:35:33,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:35:33,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:35:33,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-10-20 06:35:33,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:33,046 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-20 06:35:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-10-20 06:35:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 06:35:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:35:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-10-20 06:35:33,050 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-20 06:35:33,051 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-20 06:35:33,051 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:35:33,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-10-20 06:35:33,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:33,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:33,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:33,054 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-20 06:35:33,054 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:33,054 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 123#L12-2 assume !!(main_~c~0 > 0); 121#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 124#L12-2 assume !!(main_~c~0 > 0); 125#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 117#L12-2 [2020-10-20 06:35:33,054 INFO L796 eck$LassoCheckResult]: Loop: 117#L12-2 assume !!(main_~c~0 > 0); 118#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 117#L12-2 [2020-10-20 06:35:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,055 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-10-20 06:35:33,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435333490] [2020-10-20 06:35:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-10-20 06:35:33,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474980043] [2020-10-20 06:35:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,103 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2020-10-20 06:35:33,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818293094] [2020-10-20 06:35:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,166 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:33,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:33,167 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:33,167 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:33,167 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:33,167 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,167 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:33,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:33,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-10-20 06:35:33,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:33,167 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:33,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:33,288 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:33,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:33,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 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 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:33,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:33,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:33,355 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:33,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:33,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:33,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:33,355 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:33,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:33,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:33,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2020-10-20 06:35:33,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:33,356 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:33,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,446 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:33,446 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:35:33,454 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 [2020-10-20 06:35:33,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:33,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:33,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:33,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:33,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:33,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:33,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,464 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:33,469 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:33,469 INFO L444 ModelExtractionUtils]: 0 out of 3 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:33,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:33,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:33,475 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:33,475 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:33,548 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 [2020-10-20 06:35:33,548 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-20 06:35:33,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-10-20 06:35:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:35:33,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:33,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,563 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,603 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:33,605 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 [2020-10-20 06:35:33,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-20 06:35:33,619 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-10-20 06:35:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:35:33,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:33,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,622 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,659 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:33,660 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 [2020-10-20 06:35:33,661 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-20 06:35:33,679 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2020-10-20 06:35:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-20 06:35:33,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:33,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 06:35:33,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 06:35:33,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-10-20 06:35:33,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:33,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-10-20 06:35:33,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:35:33,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:35:33,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-10-20 06:35:33,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:33,706 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-20 06:35:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-10-20 06:35:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-10-20 06:35:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-10-20 06:35:33,708 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-10-20 06:35:33,708 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-10-20 06:35:33,710 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:35:33,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-10-20 06:35:33,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:33,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:33,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:33,711 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:33,711 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:33,711 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 261#L12-2 [2020-10-20 06:35:33,711 INFO L796 eck$LassoCheckResult]: Loop: 261#L12-2 assume !!(main_~c~0 > 0); 263#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 261#L12-2 [2020-10-20 06:35:33,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,711 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-20 06:35:33,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108113018] [2020-10-20 06:35:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2020-10-20 06:35:33,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963097604] [2020-10-20 06:35:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2020-10-20 06:35:33,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418995193] [2020-10-20 06:35:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,818 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:33,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:33,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:33,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:33,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:33,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:33,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:33,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-10-20 06:35:33,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:33,820 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:33,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,901 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:33,902 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:35:33,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:33,920 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:33,925 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:33,968 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:33,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,017 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:34,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}] Lambdas: [2, 2, 1] Nus: [1, 0] 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 [2020-10-20 06:35:34,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:34,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:34,045 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} 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 [2020-10-20 06:35:34,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:34,072 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:34,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:34,127 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:34,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:34,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:34,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:34,127 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:34,127 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,127 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:34,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:34,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2020-10-20 06:35:34,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:34,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:34,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:34,194 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,206 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 [2020-10-20 06:35:34,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:34,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:34,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,212 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,247 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 [2020-10-20 06:35:34,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,251 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:34,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,257 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 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 [2020-10-20 06:35:34,287 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 [2020-10-20 06:35:34,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,291 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:34,291 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:34,295 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 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 [2020-10-20 06:35:34,327 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 [2020-10-20 06:35:34,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:34,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:34,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:34,333 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:34,336 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:34,336 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:34,343 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:34,343 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:34,343 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2020-10-20 06:35:34,374 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,415 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:34,417 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 [2020-10-20 06:35:34,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:35:34,428 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2020-10-20 06:35:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2020-10-20 06:35:34,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:35:34,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:34,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:34,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:34,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-20 06:35:34,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:34,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-10-20 06:35:34,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:34,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-10-20 06:35:34,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:34,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:35:34,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-10-20 06:35:34,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:34,436 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-20 06:35:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-10-20 06:35:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-10-20 06:35:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-10-20 06:35:34,438 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-10-20 06:35:34,438 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-10-20 06:35:34,438 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:35:34,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-10-20 06:35:34,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:34,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:34,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:34,442 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-10-20 06:35:34,442 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:34,442 INFO L794 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 306#L12-2 assume !!(main_~c~0 > 0); 307#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 313#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2020-10-20 06:35:34,442 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2020-10-20 06:35:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,443 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-10-20 06:35:34,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:34,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283106548] [2020-10-20 06:35:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:34,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283106548] [2020-10-20 06:35:34,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:34,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:35:34,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820463304] [2020-10-20 06:35:34,491 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-10-20 06:35:34,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:34,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887527252] [2020-10-20 06:35:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:34,518 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:34,518 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:34,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:34,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:34,518 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:34,519 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,519 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:34,519 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:34,520 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-10-20 06:35:34,520 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:34,520 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:34,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,592 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:34,592 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:34,596 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 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 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:34,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:34,670 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}] Lambdas: [1, 3, 1] Nus: [1, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:34,699 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:34,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,749 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:34,751 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:34,751 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:34,751 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:34,751 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:34,751 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:34,751 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,751 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:34,751 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:34,751 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2020-10-20 06:35:34,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:34,752 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:34,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,816 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:34,817 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,830 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 [2020-10-20 06:35:34,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:34,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:34,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,840 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,874 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 [2020-10-20 06:35:34,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,878 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:34,878 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,884 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 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,913 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 [2020-10-20 06:35:34,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:34,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:34,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:34,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:34,921 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:34,921 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:34,923 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:34,924 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:34,924 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2020-10-20 06:35:34,945 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,970 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,036 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:35:35,036 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 06:35:35,045 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-10-20 06:35:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:35:35,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:35,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,049 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,071 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,092 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:35:35,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 06:35:35,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2020-10-20 06:35:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:35,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:35,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,111 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,137 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,159 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 2 loop predicates [2020-10-20 06:35:35,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 06:35:35,168 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2020-10-20 06:35:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:35:35,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:35,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:35:35,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-20 06:35:35,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-10-20 06:35:35,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:35:35,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2020-10-20 06:35:35,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:35:35,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-20 06:35:35,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-10-20 06:35:35,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:35,173 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-10-20 06:35:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-10-20 06:35:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-10-20 06:35:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-20 06:35:35,174 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:35,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:35:35,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:35:35,179 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2020-10-20 06:35:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:35,195 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-10-20 06:35:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:35:35,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-20 06:35:35,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:35:35,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2020-10-20 06:35:35,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:35:35,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-20 06:35:35,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-10-20 06:35:35,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:35,203 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-10-20 06:35:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-10-20 06:35:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-20 06:35:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-10-20 06:35:35,206 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-20 06:35:35,206 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-20 06:35:35,207 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:35:35,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-10-20 06:35:35,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:35:35,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:35,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:35,208 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2020-10-20 06:35:35,208 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-10-20 06:35:35,208 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2020-10-20 06:35:35,208 INFO L796 eck$LassoCheckResult]: Loop: 461#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2020-10-20 06:35:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2020-10-20 06:35:35,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51813206] [2020-10-20 06:35:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,219 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2020-10-20 06:35:35,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997645996] [2020-10-20 06:35:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2020-10-20 06:35:35,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988675735] [2020-10-20 06:35:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,294 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:35,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:35,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:35,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:35,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:35,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:35,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:35,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-10-20 06:35:35,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:35,295 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:35,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,366 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:35,367 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:35,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:35,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:35,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:35,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:35,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:35,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:35,433 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:35,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:35,463 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:35,483 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:35,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:35,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:35,483 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:35,483 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:35,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:35,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:35,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2020-10-20 06:35:35,484 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:35,484 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:35,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,571 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:35,571 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,573 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 [2020-10-20 06:35:35,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:35,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:35,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:35,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:35,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:35,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:35,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:35,582 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:35,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:35,589 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:35,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:35,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:35,593 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:35,593 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,690 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 [2020-10-20 06:35:35,691 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:35,701 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2020-10-20 06:35:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:35:35,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:35,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,703 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,780 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:35:35,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:35,796 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2020-10-20 06:35:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:35,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:35,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,797 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,866 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 3 loop predicates [2020-10-20 06:35:35,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:35,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2020-10-20 06:35:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:35:35,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:35,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,879 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,949 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:35:35,949 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:35,968 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2020-10-20 06:35:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-20 06:35:35,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:35,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,971 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:36,046 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:35:36,047 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:36,113 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2020-10-20 06:35:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-10-20 06:35:36,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:36,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-20 06:35:36,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2020-10-20 06:35:36,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2020-10-20 06:35:36,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-20 06:35:36,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2020-10-20 06:35:36,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-10-20 06:35:36,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-10-20 06:35:36,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2020-10-20 06:35:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,123 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2020-10-20 06:35:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2020-10-20 06:35:36,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2020-10-20 06:35:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:35:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2020-10-20 06:35:36,127 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 06:35:36,127 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 06:35:36,127 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:35:36,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2020-10-20 06:35:36,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:36,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:36,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:36,129 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2020-10-20 06:35:36,129 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-10-20 06:35:36,130 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2020-10-20 06:35:36,130 INFO L796 eck$LassoCheckResult]: Loop: 824#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2020-10-20 06:35:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,130 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2020-10-20 06:35:36,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097261251] [2020-10-20 06:35:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:35:36,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097261251] [2020-10-20 06:35:36,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476384263] [2020-10-20 06:35:36,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:35:36,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 06:35:36,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:35:36,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:35:36,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:35:36,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:35:36,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599442082] [2020-10-20 06:35:36,219 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2020-10-20 06:35:36,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638897577] [2020-10-20 06:35:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,230 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,281 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:36,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:36,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:36,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:36,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:36,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:36,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:36,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-10-20 06:35:36,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:36,283 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:36,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,375 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:36,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:36,384 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:36,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:36,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,436 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:36,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:36,511 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:36,513 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:36,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:36,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:36,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:36,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:36,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:36,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:36,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2020-10-20 06:35:36,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:36,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:36,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,585 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,586 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:36,593 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 [2020-10-20 06:35:36,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:36,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,602 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 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,633 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 [2020-10-20 06:35:36,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,637 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:36,637 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:36,640 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 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,668 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 [2020-10-20 06:35:36,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:36,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:36,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:36,674 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:36,683 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:36,683 INFO L444 ModelExtractionUtils]: 0 out of 3 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:36,698 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:36,699 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:36,699 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:36,699 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,721 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:35:36,780 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 [2020-10-20 06:35:36,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-10-20 06:35:36,822 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2020-10-20 06:35:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-10-20 06:35:36,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2020-10-20 06:35:36,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2020-10-20 06:35:36,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2020-10-20 06:35:36,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2020-10-20 06:35:36,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:36,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2020-10-20 06:35:36,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:35:36,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-20 06:35:36,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2020-10-20 06:35:36,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,835 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2020-10-20 06:35:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2020-10-20 06:35:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-20 06:35:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:35:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2020-10-20 06:35:36,846 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2020-10-20 06:35:36,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:35:36,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:35:36,847 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2020-10-20 06:35:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:36,872 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-10-20 06:35:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:35:36,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2020-10-20 06:35:36,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:36,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2020-10-20 06:35:36,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-10-20 06:35:36,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2020-10-20 06:35:36,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2020-10-20 06:35:36,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,875 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-20 06:35:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2020-10-20 06:35:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-10-20 06:35:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:35:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-20 06:35:36,880 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-20 06:35:36,880 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-20 06:35:36,880 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:35:36,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-10-20 06:35:36,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:36,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:36,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:36,882 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2020-10-20 06:35:36,882 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2020-10-20 06:35:36,883 INFO L794 eck$LassoCheckResult]: Stem: 1076#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1077#L12-2 assume !!(main_~c~0 > 0); 1093#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1091#L12-2 assume !!(main_~c~0 > 0); 1084#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2020-10-20 06:35:36,883 INFO L796 eck$LassoCheckResult]: Loop: 1078#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2020-10-20 06:35:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2020-10-20 06:35:36,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711427557] [2020-10-20 06:35:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,916 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2020-10-20 06:35:36,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478568758] [2020-10-20 06:35:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2020-10-20 06:35:36,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781496203] [2020-10-20 06:35:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:35:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781496203] [2020-10-20 06:35:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23104693] [2020-10-20 06:35:37,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:35:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:35:37,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:35:37,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-20 06:35:37,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114446474] [2020-10-20 06:35:37,129 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:37,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:37,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:37,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:37,130 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:37,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:37,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:37,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-10-20 06:35:37,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:37,130 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:37,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,200 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:37,200 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:37,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:37,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:37,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:37,235 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:37,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:37,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:37,287 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:37,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:37,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:37,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:37,288 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:37,288 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:37,288 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:37,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2020-10-20 06:35:37,288 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:37,288 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:37,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,363 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:37,363 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,369 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 [2020-10-20 06:35:37,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:37,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:37,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:37,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:37,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:37,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:37,378 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 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,401 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 [2020-10-20 06:35:37,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:37,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:37,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:37,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:37,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:37,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:37,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:37,405 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:37,407 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:35:37,407 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 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,411 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:37,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:37,412 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:37,412 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:37,432 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:37,485 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:35:37,486 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-10-20 06:35:37,504 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2020-10-20 06:35:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:37,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-20 06:35:37,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:35:37,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:37,505 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:37,571 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:35:37,571 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-10-20 06:35:37,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2020-10-20 06:35:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-20 06:35:37,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:35:37,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:37,633 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:35:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:37,693 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 4 loop predicates [2020-10-20 06:35:37,693 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-10-20 06:35:37,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2020-10-20 06:35:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-20 06:35:37,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:35:37,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:37,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2020-10-20 06:35:37,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:37,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2020-10-20 06:35:37,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:37,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2020-10-20 06:35:37,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2020-10-20 06:35:37,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2020-10-20 06:35:37,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:35:37,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-20 06:35:37,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2020-10-20 06:35:37,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:37,740 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-10-20 06:35:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2020-10-20 06:35:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-20 06:35:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:35:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2020-10-20 06:35:37,748 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2020-10-20 06:35:37,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:37,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:35:37,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:35:37,749 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 7 states. [2020-10-20 06:35:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:37,779 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-20 06:35:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:35:37,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 85 transitions. [2020-10-20 06:35:37,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-10-20 06:35:37,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 67 transitions. [2020-10-20 06:35:37,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2020-10-20 06:35:37,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 06:35:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 67 transitions. [2020-10-20 06:35:37,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:37,782 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-10-20 06:35:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 67 transitions. [2020-10-20 06:35:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-10-20 06:35:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:35:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-10-20 06:35:37,785 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-10-20 06:35:37,785 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-10-20 06:35:37,785 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-20 06:35:37,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2020-10-20 06:35:37,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-10-20 06:35:37,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:37,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:37,787 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-20 06:35:37,787 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2020-10-20 06:35:37,787 INFO L794 eck$LassoCheckResult]: Stem: 1621#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1623#L12-2 assume !!(main_~c~0 > 0); 1637#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1632#L12-2 assume !!(main_~c~0 > 0); 1628#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1629#L12-2 [2020-10-20 06:35:37,787 INFO L796 eck$LassoCheckResult]: Loop: 1629#L12-2 assume !!(main_~c~0 > 0); 1626#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1627#L12-2 assume !!(main_~c~0 > 0); 1631#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1617#L12-2 assume !!(main_~c~0 > 0); 1618#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1624#L12-2 assume !!(main_~c~0 > 0); 1628#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1629#L12-2 [2020-10-20 06:35:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2020-10-20 06:35:37,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:37,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710467861] [2020-10-20 06:35:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2020-10-20 06:35:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922195968] [2020-10-20 06:35:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:35:37,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922195968] [2020-10-20 06:35:37,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:37,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:35:37,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580819060] [2020-10-20 06:35:37,812 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:35:37,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:37,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:35:37,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:35:37,812 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-20 06:35:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:37,821 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-20 06:35:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:35:37,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2020-10-20 06:35:37,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-10-20 06:35:37,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2020-10-20 06:35:37,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:35:37,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:35:37,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2020-10-20 06:35:37,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:37,823 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-20 06:35:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2020-10-20 06:35:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-20 06:35:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:35:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-10-20 06:35:37,826 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-10-20 06:35:37,826 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-10-20 06:35:37,826 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-10-20 06:35:37,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2020-10-20 06:35:37,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-10-20 06:35:37,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:37,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:37,827 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-20 06:35:37,828 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2020-10-20 06:35:37,828 INFO L794 eck$LassoCheckResult]: Stem: 1712#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1714#L12-2 assume !!(main_~c~0 > 0); 1728#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1723#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1708#L12-2 [2020-10-20 06:35:37,828 INFO L796 eck$LassoCheckResult]: Loop: 1708#L12-2 assume !!(main_~c~0 > 0); 1709#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1718#L12-2 assume !!(main_~c~0 > 0); 1724#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1722#L12-2 assume !!(main_~c~0 > 0); 1715#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1716#L12-2 assume !!(main_~c~0 > 0); 1727#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1725#L12-2 assume !!(main_~c~0 > 0); 1721#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1708#L12-2 [2020-10-20 06:35:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,828 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2020-10-20 06:35:37,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:37,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996954209] [2020-10-20 06:35:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,835 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2020-10-20 06:35:37,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:37,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644651502] [2020-10-20 06:35:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,857 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2020-10-20 06:35:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824728897] [2020-10-20 06:35:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:37,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:37,888 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:37,981 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:37,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:37,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:37,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:37,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:37,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:37,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:37,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:37,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-10-20 06:35:37,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:37,982 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:37,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:37,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,050 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:38,051 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:38,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:38,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:38,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:38,079 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:38,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:38,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:38,127 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:38,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:38,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:38,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:38,127 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:38,127 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,127 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:38,127 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:38,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2020-10-20 06:35:38,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:38,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:38,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:38,199 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:38,199 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,203 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 [2020-10-20 06:35:38,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:38,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:38,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:38,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:38,205 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:38,205 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:38,209 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 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,231 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 [2020-10-20 06:35:38,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:38,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:38,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:38,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:38,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:38,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:38,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:38,239 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:38,241 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:38,241 INFO L444 ModelExtractionUtils]: 0 out of 3 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 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:38,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:38,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:38,244 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:38,244 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:38,264 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:38,341 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:35:38,341 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-10-20 06:35:38,344 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:35:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:38,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-20 06:35:38,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,346 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:38,426 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:35:38,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-10-20 06:35:38,431 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:35:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:38,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-20 06:35:38,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,432 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:38,535 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 5 loop predicates [2020-10-20 06:35:38,535 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-10-20 06:35:38,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2020-10-20 06:35:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-20 06:35:38,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-20 06:35:38,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,546 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:38,626 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:35:38,626 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-10-20 06:35:38,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2020-10-20 06:35:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-10-20 06:35:38,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-20 06:35:38,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,669 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:38,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:35:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:38,746 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:35:38,746 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2020-10-20 06:35:38,804 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,805 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,805 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,805 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,807 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,855 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,856 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,856 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,856 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,857 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,857 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,857 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,857 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:38,865 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2020-10-20 06:35:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2020-10-20 06:35:38,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-20 06:35:38,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2020-10-20 06:35:38,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2020-10-20 06:35:38,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:38,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2020-10-20 06:35:38,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2020-10-20 06:35:38,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2020-10-20 06:35:38,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:35:38,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:35:38,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2020-10-20 06:35:38,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:38,886 INFO L691 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2020-10-20 06:35:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2020-10-20 06:35:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2020-10-20 06:35:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 06:35:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2020-10-20 06:35:38,893 INFO L714 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-10-20 06:35:38,893 INFO L594 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2020-10-20 06:35:38,893 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-10-20 06:35:38,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2020-10-20 06:35:38,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-10-20 06:35:38,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:38,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:38,895 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-20 06:35:38,896 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2020-10-20 06:35:38,896 INFO L794 eck$LassoCheckResult]: Stem: 2705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2708#L12-2 assume !!(main_~c~0 > 0); 2733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2725#L12-2 assume !!(main_~c~0 > 0); 2713#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2701#L12-2 [2020-10-20 06:35:38,896 INFO L796 eck$LassoCheckResult]: Loop: 2701#L12-2 assume !!(main_~c~0 > 0); 2702#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2762#L12-2 assume !!(main_~c~0 > 0); 2756#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2754#L12-2 assume !!(main_~c~0 > 0); 2748#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2747#L12-2 assume !!(main_~c~0 > 0); 2746#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2738#L12-2 assume !!(main_~c~0 > 0); 2717#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2730#L12-2 assume !!(main_~c~0 > 0); 2728#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2727#L12-2 assume !!(main_~c~0 > 0); 2715#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2701#L12-2 [2020-10-20 06:35:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2020-10-20 06:35:38,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:38,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567743724] [2020-10-20 06:35:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,905 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2020-10-20 06:35:38,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:38,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957677658] [2020-10-20 06:35:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2020-10-20 06:35:38,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:38,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871592667] [2020-10-20 06:35:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:38,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:38,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:39,050 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-20 06:35:39,062 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:39,062 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:39,062 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:39,062 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:39,062 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:39,063 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,063 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:39,063 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:39,063 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-10-20 06:35:39,063 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:39,063 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:39,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:39,130 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:39,138 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:39,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:39,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:39,670 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:39,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:39,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:39,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:39,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:39,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,671 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:39,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:39,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2020-10-20 06:35:39,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:39,671 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:39,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:39,734 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:39,734 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,737 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 [2020-10-20 06:35:39,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:39,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:39,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:39,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:39,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:39,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:39,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:39,742 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:39,744 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:39,745 INFO L444 ModelExtractionUtils]: 0 out of 3 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:39,752 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:39,752 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:39,753 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:39,753 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:39,773 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:39,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:39,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:39,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:35:39,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:39,877 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-10-20 06:35:39,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-10-20 06:35:39,883 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2020-10-20 06:35:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:35:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:39,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-10-20 06:35:39,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:39,884 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:39,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:39,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:39,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:39,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:35:39,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:39,992 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2020-10-20 06:35:39,993 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-10-20 06:35:40,001 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2020-10-20 06:35:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:35:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:40,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2020-10-20 06:35:40,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,003 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:40,116 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 7 loop predicates [2020-10-20 06:35:40,116 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-10-20 06:35:40,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 146 states and 191 transitions. Complement of second has 4 states. [2020-10-20 06:35:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:35:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-20 06:35:40,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2020-10-20 06:35:40,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,130 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:40,245 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2020-10-20 06:35:40,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-10-20 06:35:40,284 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 172 states and 219 transitions. Complement of second has 8 states. [2020-10-20 06:35:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:35:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-10-20 06:35:40,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2020-10-20 06:35:40,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,287 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:40,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:35:40,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:40,406 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-10-20 06:35:40,407 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2020-10-20 06:35:40,463 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,464 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,464 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,465 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,465 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,465 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,466 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,466 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,468 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,468 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,469 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,470 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,512 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,512 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,513 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,513 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,513 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,513 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,513 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,514 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,514 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,515 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,515 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,515 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,515 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,516 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,516 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,516 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,520 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,520 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,521 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,521 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,523 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,524 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,524 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,524 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,573 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,574 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,574 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,575 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,575 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,575 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,576 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,576 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,576 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,576 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,577 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,577 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,577 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,578 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,578 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,578 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,578 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,579 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,589 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,593 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,593 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,594 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,594 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,594 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,594 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,597 WARN L278 uchiComplementFKVNwa]: big8 [2020-10-20 06:35:40,627 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. Result 1787 states and 2714 transitions. Complement of second has 144 states 16 powerset states128 rank states. The highest rank that occured is 7 [2020-10-20 06:35:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 06:35:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2020-10-20 06:35:40,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2020-10-20 06:35:40,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2020-10-20 06:35:40,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2020-10-20 06:35:40,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:40,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2020-10-20 06:35:40,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2020-10-20 06:35:40,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2020-10-20 06:35:40,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:35:40,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:35:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2020-10-20 06:35:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:40,658 INFO L691 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2020-10-20 06:35:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2020-10-20 06:35:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2020-10-20 06:35:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-20 06:35:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2020-10-20 06:35:40,673 INFO L714 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-10-20 06:35:40,673 INFO L594 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2020-10-20 06:35:40,673 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-10-20 06:35:40,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2020-10-20 06:35:40,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-10-20 06:35:40,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:40,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:40,676 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-20 06:35:40,676 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2020-10-20 06:35:40,677 INFO L794 eck$LassoCheckResult]: Stem: 5618#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5623#L12-2 assume !!(main_~c~0 > 0); 5681#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5633#L12-2 assume !!(main_~c~0 > 0); 5630#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5614#L12-2 [2020-10-20 06:35:40,677 INFO L796 eck$LassoCheckResult]: Loop: 5614#L12-2 assume !!(main_~c~0 > 0); 5615#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5831#L12-2 assume !!(main_~c~0 > 0); 5761#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5759#L12-2 assume !!(main_~c~0 > 0); 5757#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5755#L12-2 assume !!(main_~c~0 > 0); 5751#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5752#L12-2 assume !!(main_~c~0 > 0); 5734#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5735#L12-2 assume !!(main_~c~0 > 0); 5731#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5732#L12-2 assume !!(main_~c~0 > 0); 5635#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5657#L12-2 assume !!(main_~c~0 > 0); 5636#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5634#L12-2 assume !!(main_~c~0 > 0); 5632#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5614#L12-2 [2020-10-20 06:35:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2020-10-20 06:35:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587312692] [2020-10-20 06:35:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2020-10-20 06:35:40,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:40,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934118808] [2020-10-20 06:35:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:40,700 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2020-10-20 06:35:40,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:40,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455070211] [2020-10-20 06:35:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:40,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:40,717 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:40,873 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-20 06:35:40,886 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:40,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:40,887 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:40,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:40,887 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:40,887 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:40,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:40,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:40,888 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-10-20 06:35:40,888 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:40,888 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:40,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:40,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:40,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:40,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:40,951 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:40,951 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:40,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:40,959 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:40,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:40,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:41,038 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:41,039 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:41,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:41,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:41,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:41,040 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:41,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:41,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:41,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:41,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2020-10-20 06:35:41,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:41,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:41,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:41,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:41,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:41,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:41,109 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:41,110 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:41,113 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 [2020-10-20 06:35:41,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:41,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:41,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:41,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:41,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:41,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:41,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:41,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:41,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:41,120 INFO L444 ModelExtractionUtils]: 0 out of 3 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 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:41,123 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:41,123 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:41,123 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:41,123 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2020-10-20 06:35:41,143 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-20 06:35:41,243 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-20 06:35:41,244 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-10-20 06:35:41,251 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2020-10-20 06:35:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:41,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-10-20 06:35:41,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,253 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-20 06:35:41,344 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-20 06:35:41,345 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-10-20 06:35:41,353 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2020-10-20 06:35:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-20 06:35:41,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2020-10-20 06:35:41,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,355 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-20 06:35:41,471 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 6 loop predicates [2020-10-20 06:35:41,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-10-20 06:35:41,498 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 392 states and 547 transitions. Complement of second has 7 states. [2020-10-20 06:35:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-20 06:35:41,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2020-10-20 06:35:41,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,500 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:41,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:35:41,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-20 06:35:41,606 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-20 06:35:41,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2020-10-20 06:35:41,668 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 511 states and 724 transitions. Complement of second has 12 states. [2020-10-20 06:35:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2020-10-20 06:35:41,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2020-10-20 06:35:41,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2020-10-20 06:35:41,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2020-10-20 06:35:41,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:41,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2020-10-20 06:35:41,676 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:41,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2020-10-20 06:35:41,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:41,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:41,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:41,677 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:41,677 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:41,677 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:41,677 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-10-20 06:35:41,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:35:41,678 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:41,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:35:41,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:41 BoogieIcfgContainer [2020-10-20 06:35:41,685 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:41,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:41,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:41,686 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:41,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:31" (3/4) ... [2020-10-20 06:35:41,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:35:41,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:41,691 INFO L168 Benchmark]: Toolchain (without parser) took 11171.66 ms. Allocated memory was 35.7 MB in the beginning and 78.1 MB in the end (delta: 42.5 MB). Free memory was 15.5 MB in the beginning and 25.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,692 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 33.6 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.40 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 27.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 25.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,693 INFO L168 Benchmark]: Boogie Preprocessor took 19.33 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,694 INFO L168 Benchmark]: RCFGBuilder took 224.92 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 16.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,694 INFO L168 Benchmark]: BuchiAutomizer took 10564.62 ms. Allocated memory was 46.1 MB in the beginning and 78.1 MB in the end (delta: 32.0 MB). Free memory was 27.2 MB in the beginning and 26.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,695 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 78.1 MB. Free memory was 26.0 MB in the beginning and 25.0 MB in the end (delta: 986.6 kB). Peak memory consumption was 986.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:41,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 33.6 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 310.40 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 27.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 25.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.33 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 24.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 224.92 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 16.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 10564.62 ms. Allocated memory was 46.1 MB in the beginning and 78.1 MB in the end (delta: 32.0 MB). Free memory was 27.2 MB in the beginning and 26.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.3 GB. * Witness Printer took 4.20 ms. Allocated memory is still 78.1 MB. Free memory was 26.0 MB in the beginning and 25.0 MB in the end (delta: 986.6 kB). Peak memory consumption was 986.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 15 terminating modules (4 trivial, 4 deterministic, 7 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function c and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 201 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 9 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.5s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 6.5s. Construction of modules took 0.3s. Büchi inclusion checks took 3.2s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 14. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 335 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 260 states and ocurred in iteration 11. Nontrivial modules had stage [4, 0, 3, 1, 3]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 105/148 HoareTripleCheckerStatistics: 159 SDtfs, 158 SDslu, 75 SDs, 0 SdLazy, 277 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf94 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp98 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...