./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loop-new/nested-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:06:49,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:49,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:49,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:49,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:49,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:49,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:49,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:49,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:49,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:49,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:49,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:49,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:49,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:49,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:49,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:49,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:49,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:49,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:49,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:49,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:49,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:49,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:49,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:49,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:49,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:49,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:49,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:49,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:49,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:49,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:49,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:49,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:49,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:49,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:49,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:49,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:49,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:49,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:49,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:49,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:49,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:49,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:49,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:49,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:49,292 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:49,292 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:49,292 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:49,292 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:49,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:49,293 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:49,293 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:49,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:49,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:49,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:49,295 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:49,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:49,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:49,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:49,296 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:49,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:49,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:49,297 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:49,298 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:49,298 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 [2020-10-20 07:06:49,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:49,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:49,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:49,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:49,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:49,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/nested-1.i [2020-10-20 07:06:49,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a805f99b/ebd0fa9a578640f3af34ea9f1d9f8e3d/FLAGa39762753 [2020-10-20 07:06:50,058 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:50,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i [2020-10-20 07:06:50,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a805f99b/ebd0fa9a578640f3af34ea9f1d9f8e3d/FLAGa39762753 [2020-10-20 07:06:50,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a805f99b/ebd0fa9a578640f3af34ea9f1d9f8e3d [2020-10-20 07:06:50,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:50,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:50,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:50,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:50,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:50,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c78070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50, skipping insertion in model container [2020-10-20 07:06:50,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:50,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:50,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:50,776 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:50,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:50,811 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:50,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50 WrapperNode [2020-10-20 07:06:50,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:50,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:50,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:50,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:50,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:50,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:50,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:50,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:50,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (1/1) ... [2020-10-20 07:06:50,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:50,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:50,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:50,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:50,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (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 07:06:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:50,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:51,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:51,164 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 07:06:51,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:51 BoogieIcfgContainer [2020-10-20 07:06:51,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:51,167 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:51,167 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:51,171 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:51,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:51,172 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:50" (1/3) ... [2020-10-20 07:06:51,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6644077f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:51, skipping insertion in model container [2020-10-20 07:06:51,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:51,174 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:50" (2/3) ... [2020-10-20 07:06:51,174 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6644077f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:51, skipping insertion in model container [2020-10-20 07:06:51,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:51,175 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:51" (3/3) ... [2020-10-20 07:06:51,176 INFO L373 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2020-10-20 07:06:51,239 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:51,240 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:51,240 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:51,240 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:51,240 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:51,240 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:51,241 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:51,241 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:51,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:06:51,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:51,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:51,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:51,303 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:51,303 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:06:51,304 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:51,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 07:06:51,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:51,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:51,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:51,306 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:51,307 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:06:51,317 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 14#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 8#L29true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 12#L30true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 6#L31-3true [2020-10-20 07:06:51,318 INFO L796 eck$LassoCheckResult]: Loop: 6#L31-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L32-3true assume !true; 10#L31-2true main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 6#L31-3true [2020-10-20 07:06:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-10-20 07:06:51,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:51,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557136749] [2020-10-20 07:06:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,572 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:51,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash 50037, now seen corresponding path program 1 times [2020-10-20 07:06:51,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:51,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280000644] [2020-10-20 07:06:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:51,625 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 07:06:51,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280000644] [2020-10-20 07:06:51,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:51,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 07:06:51,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766102145] [2020-10-20 07:06:51,637 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 07:06:51,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:51,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 07:06:51,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 07:06:51,660 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-10-20 07:06:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:51,670 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-10-20 07:06:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:51,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2020-10-20 07:06:51,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:51,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 8 states and 9 transitions. [2020-10-20 07:06:51,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 07:06:51,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 07:06:51,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-10-20 07:06:51,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:51,686 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 07:06:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-10-20 07:06:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 07:06:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 07:06:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-10-20 07:06:51,717 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 07:06:51,717 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 07:06:51,717 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:51,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2020-10-20 07:06:51,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:06:51,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:51,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:51,719 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 07:06:51,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:06:51,719 INFO L794 eck$LassoCheckResult]: Stem: 43#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 42#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 48#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 44#L31-3 [2020-10-20 07:06:51,719 INFO L796 eck$LassoCheckResult]: Loop: 44#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 45#L32-3 assume !(main_~j~0 < main_~m~0); 46#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 44#L31-3 [2020-10-20 07:06:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2020-10-20 07:06:51,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:51,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099876889] [2020-10-20 07:06:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,750 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash 49851, now seen corresponding path program 1 times [2020-10-20 07:06:51,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534772077] [2020-10-20 07:06:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:51,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:51,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:51,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:51,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910836, now seen corresponding path program 1 times [2020-10-20 07:06:51,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:51,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185480586] [2020-10-20 07:06:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:51,837 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 07:06:51,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185480586] [2020-10-20 07:06:51,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:51,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 07:06:51,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31504472] [2020-10-20 07:06:51,882 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:51,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:51,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:51,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:51,884 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:51,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:51,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:51,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:51,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2020-10-20 07:06:51,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:51,885 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:51,906 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 07:06:51,925 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 07:06:51,936 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 07:06:52,005 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:52,006 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 07:06:52,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:52,017 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 07:06:52,028 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:52,028 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=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 07:06:52,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:52,063 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 07:06:52,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:52,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:52,232 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:52,234 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:52,234 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:52,234 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:52,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:52,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:52,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:52,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:52,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:52,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2020-10-20 07:06:52,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:52,236 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:52,238 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 07:06:52,251 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 07:06:52,263 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 07:06:52,305 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:52,310 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 07:06:52,320 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 07:06:52,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:52,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:52,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:52,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:52,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:52,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:52,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:52,334 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 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 07:06:52,367 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 07:06:52,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:52,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:52,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:52,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:52,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:52,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:52,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:52,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:52,386 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 07:06:52,387 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:52,399 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:52,411 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:52,411 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:52,412 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 07:06:52,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:52,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:52,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:52,499 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:52,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:52,512 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 07:06:52,516 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 07:06:52,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 3 states. [2020-10-20 07:06:52,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 4 states. [2020-10-20 07:06:52,561 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 07:06:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 07:06:52,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 07:06:52,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:52,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 07:06:52,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:52,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 07:06:52,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:52,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2020-10-20 07:06:52,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 07:06:52,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 15 transitions. [2020-10-20 07:06:52,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 07:06:52,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 07:06:52,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-10-20 07:06:52,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:52,569 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-20 07:06:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-10-20 07:06:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-10-20 07:06:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 07:06:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-10-20 07:06:52,571 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-10-20 07:06:52,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:52,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 07:06:52,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 07:06:52,572 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 4 states. [2020-10-20 07:06:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:52,591 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-10-20 07:06:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 07:06:52,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-10-20 07:06:52,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 07:06:52,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2020-10-20 07:06:52,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-20 07:06:52,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 07:06:52,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2020-10-20 07:06:52,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:52,594 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-20 07:06:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2020-10-20 07:06:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-10-20 07:06:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 07:06:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-10-20 07:06:52,597 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-20 07:06:52,597 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-20 07:06:52,597 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 07:06:52,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-10-20 07:06:52,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 07:06:52,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:52,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:52,599 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:06:52,599 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:06:52,599 INFO L794 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 131#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 132#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 139#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 134#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 135#L32-3 [2020-10-20 07:06:52,599 INFO L796 eck$LassoCheckResult]: Loop: 135#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 140#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 135#L32-3 [2020-10-20 07:06:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash 28695852, now seen corresponding path program 1 times [2020-10-20 07:06:52,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:52,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955543210] [2020-10-20 07:06:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,629 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 1 times [2020-10-20 07:06:52,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:52,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698974313] [2020-10-20 07:06:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,640 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:52,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910894, now seen corresponding path program 1 times [2020-10-20 07:06:52,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:52,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795822120] [2020-10-20 07:06:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:52,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:52,738 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:52,755 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:52,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:52,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:52,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:52,756 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:52,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:52,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:52,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:52,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2020-10-20 07:06:52,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:52,757 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:52,758 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 07:06:52,768 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 07:06:52,771 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 07:06:52,775 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 07:06:52,817 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:52,818 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 07:06:52,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:52,830 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:52,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:52,880 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,077 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:53,079 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:53,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:53,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:53,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:53,080 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:53,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:53,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:53,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2020-10-20 07:06:53,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:53,081 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:53,082 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 07:06:53,094 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 07:06:53,098 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 07:06:53,103 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 07:06:53,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:53,155 INFO L489 LassoAnalysis]: Using template 'affine'. 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 07:06:53,165 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 07:06:53,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:53,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:53,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:53,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:53,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:53,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:53,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:53,172 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:53,174 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:53,175 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,183 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:53,183 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:53,183 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:53,183 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-10-20 07:06:53,213 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,276 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 07:06:53,277 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 07:06:53,277 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 07:06:53,293 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 24 states and 31 transitions. Complement of second has 7 states. [2020-10-20 07:06:53,294 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 07:06:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-20 07:06:53,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 07:06:53,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:53,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 07:06:53,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:53,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 07:06:53,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:53,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-10-20 07:06:53,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 07:06:53,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 17 states and 21 transitions. [2020-10-20 07:06:53,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 07:06:53,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 07:06:53,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2020-10-20 07:06:53,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:06:53,300 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-20 07:06:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2020-10-20 07:06:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-10-20 07:06:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 07:06:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-20 07:06:53,302 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 07:06:53,302 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 07:06:53,302 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 07:06:53,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-10-20 07:06:53,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 07:06:53,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:53,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:53,304 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:06:53,304 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:06:53,304 INFO L794 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 212#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 213#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 222#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 215#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 216#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 220#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 223#L32-3 assume !(main_~j~0 < main_~m~0); 221#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 217#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 218#L32-3 [2020-10-20 07:06:53,304 INFO L796 eck$LassoCheckResult]: Loop: 218#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 219#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 218#L32-3 [2020-10-20 07:06:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:53,304 INFO L82 PathProgramCache]: Analyzing trace with hash 857348446, now seen corresponding path program 1 times [2020-10-20 07:06:53,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:53,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469955263] [2020-10-20 07:06:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,356 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 07:06:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469955263] [2020-10-20 07:06:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975816318] [2020-10-20 07:06:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 07:06:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,468 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 07:06:53,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 07:06:53,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-20 07:06:53,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564157870] [2020-10-20 07:06:53,469 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 07:06:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:53,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 2 times [2020-10-20 07:06:53,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:53,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402906493] [2020-10-20 07:06:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:53,474 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:53,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:53,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:53,493 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:53,493 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:53,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:53,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:53,494 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:53,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:53,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:53,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2020-10-20 07:06:53,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:53,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:53,496 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 07:06:53,503 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 07:06:53,506 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 07:06:53,508 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 07:06:53,550 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:53,550 INFO L404 LassoAnalysis]: Checking for nontermination... 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 07:06:53,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:53,561 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 07:06:53,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:53,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:53,717 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:53,719 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:53,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:53,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:53,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:53,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:53,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:53,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:53,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2020-10-20 07:06:53,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:53,721 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:53,722 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 07:06:53,727 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 07:06:53,730 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 07:06:53,733 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 07:06:53,767 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:53,767 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 07:06:53,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:53,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:53,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:53,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:53,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:53,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:53,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:53,781 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:53,785 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:53,785 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:53,789 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:53,789 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:53,789 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:53,789 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-10-20 07:06:53,809 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,846 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,861 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 07:06:53,862 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 07:06:53,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 07:06:53,877 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 7 states. [2020-10-20 07:06:53,878 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 07:06:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-20 07:06:53,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 07:06:53,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:53,879 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:53,961 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:53,975 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 07:06:53,975 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 07:06:53,975 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 07:06:53,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 7 states. [2020-10-20 07:06:53,995 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 07:06:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-20 07:06:53,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 07:06:53,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:53,996 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 07:06:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:54,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:54,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:54,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:54,049 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 07:06:54,050 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 07:06:54,050 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 07:06:54,068 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 17 states and 21 transitions. Complement of second has 6 states. [2020-10-20 07:06:54,070 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 07:06:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 07:06:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 07:06:54,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 07:06:54,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:54,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-20 07:06:54,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:54,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-20 07:06:54,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:54,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-10-20 07:06:54,080 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:54,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-10-20 07:06:54,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:54,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:54,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:54,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:54,082 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:54,082 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:54,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:54,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 07:06:54,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-20 07:06:54,086 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2020-10-20 07:06:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:54,086 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 07:06:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:54,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 07:06:54,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:54,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 07:06:54,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:54,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:54,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:54,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:54,090 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:54,090 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:54,091 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:54,091 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 07:06:54,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 07:06:54,091 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:54,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 07:06:54,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:54 BoogieIcfgContainer [2020-10-20 07:06:54,105 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:54,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:54,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:54,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:54,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:51" (3/4) ... [2020-10-20 07:06:54,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 07:06:54,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:54,119 INFO L168 Benchmark]: Toolchain (without parser) took 3647.00 ms. Allocated memory was 35.1 MB in the beginning and 53.0 MB in the end (delta: 17.8 MB). Free memory was 12.5 MB in the beginning and 11.8 MB in the end (delta: 723.8 kB). Peak memory consumption was 18.5 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,121 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 29.4 kB). Peak memory consumption was 29.4 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.09 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.7 MB in the beginning and 22.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.31 ms. Allocated memory is still 43.5 MB. Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,124 INFO L168 Benchmark]: Boogie Preprocessor took 22.36 ms. Allocated memory is still 43.5 MB. Free memory was 21.1 MB in the beginning and 19.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,127 INFO L168 Benchmark]: RCFGBuilder took 296.58 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.7 MB in the beginning and 18.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,129 INFO L168 Benchmark]: BuchiAutomizer took 2938.13 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 18.4 MB in the beginning and 12.2 MB in the end (delta: 6.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,139 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 53.0 MB. Free memory was 12.2 MB in the beginning and 11.8 MB in the end (delta: 454.9 kB). Peak memory consumption was 454.9 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:54,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 29.4 kB). Peak memory consumption was 29.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 341.09 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.7 MB in the beginning and 22.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 34.31 ms. Allocated memory is still 43.5 MB. Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.36 ms. Allocated memory is still 43.5 MB. Free memory was 21.1 MB in the beginning and 19.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 296.58 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.7 MB in the beginning and 18.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 2938.13 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 18.4 MB in the beginning and 12.2 MB in the end (delta: 6.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. * Witness Printer took 5.67 ms. Allocated memory is still 53.0 MB. Free memory was 12.2 MB in the beginning and 11.8 MB in the end (delta: 454.9 kB). Peak memory consumption was 454.9 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 3 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 64 SDtfs, 50 SDslu, 13 SDs, 0 SdLazy, 40 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf98 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...