./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a80d10d797b477078e6dad6d87594a2a0aea1065 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:36:06,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:36:06,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:36:06,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:36:06,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:36:06,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:36:06,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:36:06,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:36:06,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:36:06,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:36:06,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:36:06,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:36:06,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:36:06,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:36:06,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:36:06,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:36:06,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:36:06,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:36:06,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:36:06,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:36:06,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:36:06,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:36:06,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:36:06,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:36:06,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:36:06,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:36:06,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:36:06,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:36:06,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:36:06,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:36:06,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:36:06,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:36:06,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:36:06,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:36:06,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:36:06,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:36:06,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:36:06,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:36:06,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:36:06,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:36:06,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:36:06,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:36:06,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:36:06,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:36:06,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:36:06,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:36:06,242 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:36:06,242 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:36:06,242 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:36:06,242 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:36:06,243 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:36:06,243 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:36:06,243 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:36:06,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:36:06,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:36:06,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:36:06,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:36:06,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:36:06,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:36:06,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:36:06,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:36:06,245 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:36:06,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:36:06,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:36:06,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:36:06,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:36:06,246 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:36:06,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:36:06,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:36:06,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:36:06,246 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:36:06,247 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:36:06,248 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2020-10-20 06:36:06,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:36:06,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:36:06,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:36:06,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:36:06,474 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:36:06,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-10-20 06:36:06,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766859825/99e107c4a4bf43958bc3d802d9da0424/FLAGe2b285994 [2020-10-20 06:36:06,933 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:36:06,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-10-20 06:36:06,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766859825/99e107c4a4bf43958bc3d802d9da0424/FLAGe2b285994 [2020-10-20 06:36:07,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766859825/99e107c4a4bf43958bc3d802d9da0424 [2020-10-20 06:36:07,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:36:07,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:36:07,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:07,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:36:07,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:36:07,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412865c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07, skipping insertion in model container [2020-10-20 06:36:07,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:36:07,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:36:07,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:07,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:36:07,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:07,631 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:36:07,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07 WrapperNode [2020-10-20 06:36:07,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:07,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:07,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:36:07,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:36:07,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:07,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:36:07,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:36:07,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:36:07,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... [2020-10-20 06:36:07,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:36:07,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:36:07,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:36:07,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:36:07,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:36:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:36:07,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:36:07,930 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:36:07,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:07 BoogieIcfgContainer [2020-10-20 06:36:07,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:36:07,938 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:36:07,938 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:36:07,942 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:36:07,943 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:07,943 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:36:07" (1/3) ... [2020-10-20 06:36:07,944 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58156a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:07, skipping insertion in model container [2020-10-20 06:36:07,945 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:07,945 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:07" (2/3) ... [2020-10-20 06:36:07,945 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58156a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:07, skipping insertion in model container [2020-10-20 06:36:07,945 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:07,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:07" (3/3) ... [2020-10-20 06:36:07,947 INFO L373 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2020-10-20 06:36:08,000 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:36:08,000 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:36:08,001 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:36:08,001 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:36:08,001 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:36:08,001 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:36:08,001 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:36:08,001 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:36:08,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:36:08,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:08,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:08,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:08,047 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:08,047 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:08,047 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:36:08,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:36:08,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:08,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:08,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:08,049 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:08,049 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:08,058 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2020-10-20 06:36:08,058 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 > 10); 3#L10true assume 25 == main_~i~0;main_~i~0 := 30; 8#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 5#L13-1true [2020-10-20 06:36:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:08,065 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:36:08,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:08,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811780009] [2020-10-20 06:36:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2020-10-20 06:36:08,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:08,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978725762] [2020-10-20 06:36:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2020-10-20 06:36:08,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:08,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913948330] [2020-10-20 06:36:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:08,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:08,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:08,303 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:08,303 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:08,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:08,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:08,304 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:08,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:08,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:08,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-10-20 06:36:08,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:08,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:08,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:08,445 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:08,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:08,464 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,476 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:08,476 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:08,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:08,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:08,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:08,569 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:08,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:08,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:08,641 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:08,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:08,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:08,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:08,641 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:08,642 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,642 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:08,642 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:08,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-10-20 06:36:08,642 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:08,642 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:08,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:08,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:08,720 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:08,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:08,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:08,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:08,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:08,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:08,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:08,758 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:08,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:08,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:08,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:08,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:08,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:08,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:08,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:08,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:08,831 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:08,831 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:08,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:08,842 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:08,842 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:08,843 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:08,877 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:08,916 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:08,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:08,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:08,977 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:08,978 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-10-20 06:36:09,039 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 6 states. [2020-10-20 06:36:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:36:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-20 06:36:09,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-20 06:36:09,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,046 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,063 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,069 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:09,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:09,095 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:09,095 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-10-20 06:36:09,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 28 states and 38 transitions. Complement of second has 8 states. [2020-10-20 06:36:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:36:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-10-20 06:36:09,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-20 06:36:09,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:36:09,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-20 06:36:09,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2020-10-20 06:36:09,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:09,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2020-10-20 06:36:09,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 06:36:09,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:36:09,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2020-10-20 06:36:09,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:09,141 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-10-20 06:36:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2020-10-20 06:36:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-20 06:36:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:36:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-10-20 06:36:09,191 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-20 06:36:09,191 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-20 06:36:09,191 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:36:09,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-10-20 06:36:09,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:09,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:09,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:09,193 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:36:09,193 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:09,193 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2020-10-20 06:36:09,193 INFO L796 eck$LassoCheckResult]: Loop: 123#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 128#L13-1 assume !!(main_~i~0 > 10); 122#L10 assume 25 == main_~i~0;main_~i~0 := 30; 123#L10-2 [2020-10-20 06:36:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-20 06:36:09,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969211868] [2020-10-20 06:36:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,204 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2020-10-20 06:36:09,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693788196] [2020-10-20 06:36:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,214 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,215 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2020-10-20 06:36:09,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027929172] [2020-10-20 06:36:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,228 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,257 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:09,257 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:09,257 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:09,257 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:09,257 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:09,257 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:09,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:09,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-10-20 06:36:09,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:09,258 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:09,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,344 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:09,345 INFO L404 LassoAnalysis]: Checking for nontermination... 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 06:36:09,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:09,361 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 06:36:09,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:09,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:09,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:09,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:09,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:36:09,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:09,445 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:09,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:09,484 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:09,506 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:09,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:09,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:09,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:09,507 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:09,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:09,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:09,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-10-20 06:36:09,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:09,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:09,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,560 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:09,560 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:09,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:09,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:09,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:09,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:09,579 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:09,580 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:09,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:09,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:09,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:09,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:09,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:09,621 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:09,621 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:09,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:09,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:09,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:09,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:09,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:09,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:09,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:09,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:09,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:09,706 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:09,706 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:36:09,710 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:09,711 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:09,711 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:09,711 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2020-10-20 06:36:09,735 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:09,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,767 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:09,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:09,792 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:09,792 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-20 06:36:09,820 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 5 states. [2020-10-20 06:36:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-20 06:36:09,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-20 06:36:09,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:36:09,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-20 06:36:09,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:09,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-10-20 06:36:09,827 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:36:09,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2020-10-20 06:36:09,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 06:36:09,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-20 06:36:09,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2020-10-20 06:36:09,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:09,831 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-10-20 06:36:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2020-10-20 06:36:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-10-20 06:36:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:36:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-10-20 06:36:09,839 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-10-20 06:36:09,839 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-10-20 06:36:09,839 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:36:09,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2020-10-20 06:36:09,840 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:36:09,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:09,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:09,842 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:09,843 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:09,843 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2020-10-20 06:36:09,843 INFO L796 eck$LassoCheckResult]: Loop: 199#L13-1 assume !!(main_~i~0 > 10); 200#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 199#L13-1 [2020-10-20 06:36:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2020-10-20 06:36:09,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854036809] [2020-10-20 06:36:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:09,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854036809] [2020-10-20 06:36:09,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:36:09,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:36:09,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539288255] [2020-10-20 06:36:09,882 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:36:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2020-10-20 06:36:09,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:09,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620104813] [2020-10-20 06:36:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:09,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:09,893 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:09,914 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:09,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:09,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:09,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:09,915 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:09,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:09,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:09,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-10-20 06:36:09,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:09,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:09,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:09,972 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:09,972 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:09,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:09,984 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:09,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:09,989 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:10,046 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:10,097 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,103 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:10,139 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:10,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:10,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:10,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:10,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:10,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:10,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:10,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-10-20 06:36:10,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:10,141 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:10,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,194 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:10,194 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:10,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:10,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:10,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:10,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:10,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:10,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:10,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:10,216 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:10,216 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,236 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:10,236 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:10,237 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:10,237 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,272 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,337 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:10,353 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:10,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-20 06:36:10,372 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 66 transitions. Complement of second has 5 states. [2020-10-20 06:36:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:36:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:10,373 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:36:10,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,374 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,398 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:10,415 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:10,415 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-20 06:36:10,441 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 44 states and 70 transitions. Complement of second has 7 states. [2020-10-20 06:36:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:36:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-20 06:36:10,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:36:10,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:36:10,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:36:10,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2020-10-20 06:36:10,446 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:36:10,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2020-10-20 06:36:10,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-10-20 06:36:10,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-20 06:36:10,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2020-10-20 06:36:10,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:10,448 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2020-10-20 06:36:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2020-10-20 06:36:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-20 06:36:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:36:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2020-10-20 06:36:10,454 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2020-10-20 06:36:10,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:36:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:36:10,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:36:10,459 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2020-10-20 06:36:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:36:10,479 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-20 06:36:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:36:10,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2020-10-20 06:36:10,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:36:10,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2020-10-20 06:36:10,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-20 06:36:10,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-20 06:36:10,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2020-10-20 06:36:10,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:10,483 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-20 06:36:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2020-10-20 06:36:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-10-20 06:36:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:36:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-20 06:36:10,486 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-20 06:36:10,487 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-20 06:36:10,487 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:36:10,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-10-20 06:36:10,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:10,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:10,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:10,489 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-10-20 06:36:10,489 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:10,489 INFO L794 eck$LassoCheckResult]: Stem: 441#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 442#L13-1 assume !!(main_~i~0 > 10); 453#L10 assume !(25 == main_~i~0); 457#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 437#L10 assume !(25 == main_~i~0); 438#L10-2 [2020-10-20 06:36:10,489 INFO L796 eck$LassoCheckResult]: Loop: 438#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 443#L13-1 assume !!(main_~i~0 > 10); 444#L10 assume 25 == main_~i~0;main_~i~0 := 30; 438#L10-2 [2020-10-20 06:36:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2020-10-20 06:36:10,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:10,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274946424] [2020-10-20 06:36:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,500 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,501 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2020-10-20 06:36:10,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:10,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975947467] [2020-10-20 06:36:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,511 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,512 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2020-10-20 06:36:10,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:10,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243378076] [2020-10-20 06:36:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:10,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:10,527 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:10,565 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:10,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:10,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:10,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:10,566 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:10,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:10,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:10,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-10-20 06:36:10,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:10,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:10,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,632 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:10,633 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:10,643 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:10,693 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,699 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:10,732 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:10,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:10,733 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:10,733 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:10,733 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:10,733 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,733 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:10,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:10,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-10-20 06:36:10,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:10,733 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:10,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:10,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:10,781 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:10,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:10,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:10,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:10,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:10,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:10,794 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:10,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,798 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:10,801 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:10,801 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:10,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:10,813 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:10,813 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:10,813 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:10,847 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,871 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:10,883 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:10,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:10,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-10-20 06:36:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:10,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:36:10,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,903 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,925 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:10,937 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:10,937 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:10,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-10-20 06:36:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:10,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:36:10,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:10,954 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:10,977 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:10,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:10,994 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:10,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:11,012 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 31 states and 47 transitions. Complement of second has 6 states. [2020-10-20 06:36:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 06:36:11,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-20 06:36:11,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-20 06:36:11,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-20 06:36:11,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2020-10-20 06:36:11,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:36:11,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2020-10-20 06:36:11,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 06:36:11,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-10-20 06:36:11,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2020-10-20 06:36:11,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:11,018 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-10-20 06:36:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2020-10-20 06:36:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2020-10-20 06:36:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 06:36:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2020-10-20 06:36:11,021 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-20 06:36:11,021 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-20 06:36:11,021 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:36:11,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2020-10-20 06:36:11,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:36:11,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:11,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:11,022 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:11,023 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:11,023 INFO L794 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 665#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-10-20 06:36:11,023 INFO L796 eck$LassoCheckResult]: Loop: 666#L13-1 assume !!(main_~i~0 > 10); 660#L10 assume !(25 == main_~i~0); 661#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-10-20 06:36:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,024 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2020-10-20 06:36:11,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267068267] [2020-10-20 06:36:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,040 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,040 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2020-10-20 06:36:11,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079204806] [2020-10-20 06:36:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2020-10-20 06:36:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723461821] [2020-10-20 06:36:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,065 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,117 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:11,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:11,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:11,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:11,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:11,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:11,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:11,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-10-20 06:36:11,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:11,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:11,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,233 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:11,233 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:11,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:11,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:11,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:11,286 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,337 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:11,339 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:11,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:11,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:11,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:11,339 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:11,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:11,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:11,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-10-20 06:36:11,340 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:11,340 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:11,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,432 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:11,433 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:11,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:11,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:11,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:11,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:11,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:11,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:11,454 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:11,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:11,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:11,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:11,482 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:36:11,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:11,484 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:36:11,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:11,488 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:11,490 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:36:11,490 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,493 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:11,493 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:11,493 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:11,493 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 06:36:11,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:11,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:11,535 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:11,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:11,544 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:11,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-20 06:36:11,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:36:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:11,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:36:11,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:36:11,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:36:11,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:11,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2020-10-20 06:36:11,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:36:11,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2020-10-20 06:36:11,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 06:36:11,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:36:11,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2020-10-20 06:36:11,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:11,561 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 06:36:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2020-10-20 06:36:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-10-20 06:36:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:36:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-10-20 06:36:11,564 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-20 06:36:11,564 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-20 06:36:11,564 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:36:11,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2020-10-20 06:36:11,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:36:11,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:11,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:11,565 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-10-20 06:36:11,565 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:11,566 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 754#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 756#L13-1 assume !!(main_~i~0 > 10); 757#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-10-20 06:36:11,566 INFO L796 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-10-20 06:36:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2020-10-20 06:36:11,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961346746] [2020-10-20 06:36:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2020-10-20 06:36:11,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926142259] [2020-10-20 06:36:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2020-10-20 06:36:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:11,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788367526] [2020-10-20 06:36:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:11,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:11,610 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:11,657 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:11,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:11,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:11,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:11,657 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:11,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:11,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:11,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-10-20 06:36:11,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:11,658 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:11,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,752 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:11,752 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:11,758 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:11,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:11,849 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:11,851 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:11,851 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:11,851 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:11,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:11,851 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:11,852 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,852 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:11,852 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:11,852 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-10-20 06:36:11,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:11,852 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:11,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:11,954 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:11,955 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:11,966 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:11,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:11,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:11,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:11,968 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:36:11,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:11,970 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:36:11,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:11,974 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:11,976 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:36:11,977 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:11,980 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:11,980 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:11,980 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:11,981 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,007 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,029 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:12,038 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:12,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:12,053 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:36:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:12,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:36:12,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,055 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:12,084 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:12,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:12,102 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:36:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:12,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:36:12,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,103 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,137 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:12,150 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:12,150 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:36:12,163 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 52 transitions. Complement of second has 4 states. [2020-10-20 06:36:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-20 06:36:12,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:36:12,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:36:12,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:36:12,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2020-10-20 06:36:12,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:36:12,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2020-10-20 06:36:12,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:36:12,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:36:12,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2020-10-20 06:36:12,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:12,170 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-20 06:36:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2020-10-20 06:36:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2020-10-20 06:36:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:36:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-10-20 06:36:12,172 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:36:12,172 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:36:12,173 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:36:12,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-10-20 06:36:12,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:36:12,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:12,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:12,174 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:12,174 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-10-20 06:36:12,175 INFO L794 eck$LassoCheckResult]: Stem: 1006#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1007#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-10-20 06:36:12,175 INFO L796 eck$LassoCheckResult]: Loop: 1008#L13-1 assume !!(main_~i~0 > 10); 1005#L10 assume !(25 == main_~i~0); 1004#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1011#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-10-20 06:36:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2020-10-20 06:36:12,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162240393] [2020-10-20 06:36:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,183 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2020-10-20 06:36:12,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122466333] [2020-10-20 06:36:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2020-10-20 06:36:12,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528550992] [2020-10-20 06:36:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,213 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:12,236 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:12,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:12,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:12,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:12,237 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:12,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:12,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:12,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-10-20 06:36:12,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:12,238 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:12,238 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 06:36:12,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:12,299 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:12,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:12,316 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 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 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:12,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:12,354 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:12,374 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:12,374 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:12,374 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:12,374 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:12,375 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:12,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,375 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:12,375 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:12,375 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-10-20 06:36:12,375 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:12,375 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:12,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:12,420 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:12,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:12,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:12,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:12,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:12,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:12,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:12,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:12,430 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:12,433 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:12,433 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,436 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:12,436 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:12,436 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:12,436 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2020-10-20 06:36:12,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:12,522 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:12,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-10-20 06:36:12,559 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 7 states. [2020-10-20 06:36:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:36:12,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:36:12,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,567 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:12,617 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:12,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-10-20 06:36:12,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 9 states. [2020-10-20 06:36:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-20 06:36:12,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:36:12,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:36:12,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:12,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:12,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2020-10-20 06:36:12,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:36:12,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2020-10-20 06:36:12,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:36:12,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:36:12,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2020-10-20 06:36:12,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:12,665 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-20 06:36:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2020-10-20 06:36:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-20 06:36:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:36:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-10-20 06:36:12,668 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-10-20 06:36:12,668 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-10-20 06:36:12,668 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:36:12,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2020-10-20 06:36:12,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:36:12,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:12,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:12,670 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2020-10-20 06:36:12,671 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-10-20 06:36:12,671 INFO L794 eck$LassoCheckResult]: Stem: 1226#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1227#L13-1 assume !!(main_~i~0 > 10); 1234#L10 assume !(25 == main_~i~0); 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1228#L13-1 assume !!(main_~i~0 > 10); 1230#L10 assume !(25 == main_~i~0); 1251#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1247#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-10-20 06:36:12,671 INFO L796 eck$LassoCheckResult]: Loop: 1237#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-10-20 06:36:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2020-10-20 06:36:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954238474] [2020-10-20 06:36:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,687 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2020-10-20 06:36:12,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693642136] [2020-10-20 06:36:12,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:12,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:12,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2020-10-20 06:36:12,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:12,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989730884] [2020-10-20 06:36:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:36:12,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989730884] [2020-10-20 06:36:12,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193210858] [2020-10-20 06:36:12,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:36:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:12,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:36:12,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:36:12,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:36:12,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281720126] [2020-10-20 06:36:12,803 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:12,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:12,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:12,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:12,804 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:12,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:12,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:12,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-10-20 06:36:12,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:12,805 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:12,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,847 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:12,847 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:12,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:12,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:12,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:12,878 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:12,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:12,907 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:12,927 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:12,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:12,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:12,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:12,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:12,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:12,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:12,928 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-10-20 06:36:12,928 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:12,928 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:12,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:12,971 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:12,972 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:12,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:12,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:12,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:12,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:12,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:12,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:12,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:12,983 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 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:13,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:13,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:13,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:13,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:13,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:13,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:13,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:13,010 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:13,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:13,013 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,015 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:13,015 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:13,016 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:13,016 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2020-10-20 06:36:13,037 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:13,113 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:13,114 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-20 06:36:13,152 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 81 states and 107 transitions. Complement of second has 7 states. [2020-10-20 06:36:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:36:13,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:36:13,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,155 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:13,227 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:13,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-20 06:36:13,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 9 states. [2020-10-20 06:36:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-20 06:36:13,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:36:13,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,268 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:13,344 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:13,344 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-20 06:36:13,377 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 101 states and 141 transitions. Complement of second has 10 states. [2020-10-20 06:36:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-20 06:36:13,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:36:13,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,380 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:13,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:13,438 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:36:13,438 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-20 06:36:13,484 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 76 states and 101 transitions. Complement of second has 11 states. [2020-10-20 06:36:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:36:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-20 06:36:13,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:36:13,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-20 06:36:13,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2020-10-20 06:36:13,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:13,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2020-10-20 06:36:13,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-10-20 06:36:13,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2020-10-20 06:36:13,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:36:13,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:36:13,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2020-10-20 06:36:13,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:13,492 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-10-20 06:36:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2020-10-20 06:36:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2020-10-20 06:36:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:36:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2020-10-20 06:36:13,495 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2020-10-20 06:36:13,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:36:13,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:36:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:36:13,496 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2020-10-20 06:36:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:36:13,525 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-20 06:36:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:36:13,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-20 06:36:13,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-20 06:36:13,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2020-10-20 06:36:13,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-20 06:36:13,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-10-20 06:36:13,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-10-20 06:36:13,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:13,528 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-20 06:36:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-10-20 06:36:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-20 06:36:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:36:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-10-20 06:36:13,531 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-20 06:36:13,531 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-20 06:36:13,532 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-20 06:36:13,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-10-20 06:36:13,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:36:13,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:13,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:13,533 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:13,534 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2020-10-20 06:36:13,534 INFO L794 eck$LassoCheckResult]: Stem: 1992#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1993#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-10-20 06:36:13,534 INFO L796 eck$LassoCheckResult]: Loop: 1994#L13-1 assume !!(main_~i~0 > 10); 1988#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1989#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1996#L13-1 assume !!(main_~i~0 > 10); 1990#L10 assume !(25 == main_~i~0); 1991#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1997#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-10-20 06:36:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2020-10-20 06:36:13,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:13,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133382108] [2020-10-20 06:36:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,542 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,543 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2020-10-20 06:36:13,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:13,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687904523] [2020-10-20 06:36:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,553 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2020-10-20 06:36:13,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:13,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232806755] [2020-10-20 06:36:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:13,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:13,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:13,605 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:13,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:13,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:13,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:13,606 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:13,606 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,606 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:13,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:13,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-10-20 06:36:13,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:13,606 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:13,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,653 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:13,653 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:13,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:13,663 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:13,671 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:13,701 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:13,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:13,726 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,735 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:13,755 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:13,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:13,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:13,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:13,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:13,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:13,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:13,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-10-20 06:36:13,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:13,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:13,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:13,808 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:13,808 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,814 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:13,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:13,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:13,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:13,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:13,818 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:13,818 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:13,822 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 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:13,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:13,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:13,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:13,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:13,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:13,861 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:13,864 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:13,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:13,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:13,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:13,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:13,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:13,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:13,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:13,891 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:13,893 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:13,893 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:13,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:13,896 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:13,896 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:13,897 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2020-10-20 06:36:13,916 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:36:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:13,988 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:36:13,988 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-20 06:36:13,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 47 transitions. Complement of second has 5 states. [2020-10-20 06:36:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:14,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-20 06:36:14,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,000 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,068 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:36:14,068 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-20 06:36:14,088 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 40 states and 49 transitions. Complement of second has 7 states. [2020-10-20 06:36:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-20 06:36:14,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-20 06:36:14,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,089 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,170 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:36:14,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-20 06:36:14,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 49 transitions. Complement of second has 5 states. [2020-10-20 06:36:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-20 06:36:14,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-20 06:36:14,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,186 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,250 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:36:14,250 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-20 06:36:14,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 41 states and 51 transitions. Complement of second has 6 states. [2020-10-20 06:36:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:36:14,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-20 06:36:14,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,276 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,350 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 06:36:14,352 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-20 06:36:14,464 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2020-10-20 06:36:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-10-20 06:36:14,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-20 06:36:14,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2020-10-20 06:36:14,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2020-10-20 06:36:14,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2020-10-20 06:36:14,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2020-10-20 06:36:14,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2020-10-20 06:36:14,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 06:36:14,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:36:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2020-10-20 06:36:14,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:14,476 INFO L691 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2020-10-20 06:36:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2020-10-20 06:36:14,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2020-10-20 06:36:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 06:36:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2020-10-20 06:36:14,481 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-10-20 06:36:14,481 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-10-20 06:36:14,482 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-10-20 06:36:14,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2020-10-20 06:36:14,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-20 06:36:14,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:14,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:14,483 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:14,484 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2020-10-20 06:36:14,484 INFO L794 eck$LassoCheckResult]: Stem: 2689#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2691#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-10-20 06:36:14,484 INFO L796 eck$LassoCheckResult]: Loop: 2692#L13-1 assume !!(main_~i~0 > 10); 2693#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2696#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-10-20 06:36:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2020-10-20 06:36:14,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:14,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416097459] [2020-10-20 06:36:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,492 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2020-10-20 06:36:14,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:14,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260606938] [2020-10-20 06:36:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,506 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2020-10-20 06:36:14,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:14,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401560613] [2020-10-20 06:36:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:14,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:14,519 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:14,565 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:14,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:14,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:14,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:14,565 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:14,565 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:14,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:14,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-10-20 06:36:14,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:14,566 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:14,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,611 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:14,611 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:14,614 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:14,639 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:14,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:14,663 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:14,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:14,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:14,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:14,664 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:14,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:14,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:14,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-10-20 06:36:14,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:14,664 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:14,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:14,704 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:14,704 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:14,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:14,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:14,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:14,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:14,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:14,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:14,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:14,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:14,725 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:14,725 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:14,731 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:14,732 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:14,732 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:14,732 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:14,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,857 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:36:14,857 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-20 06:36:14,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 101 states and 129 transitions. Complement of second has 5 states. [2020-10-20 06:36:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:36:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:14,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:14,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,877 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:14,958 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:36:14,958 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-20 06:36:14,980 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 106 states and 135 transitions. Complement of second has 7 states. [2020-10-20 06:36:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:36:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-20 06:36:14,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:14,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:14,982 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:14,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:15,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:36:15,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:15,066 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:36:15,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-20 06:36:15,080 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 95 states and 126 transitions. Complement of second has 5 states. [2020-10-20 06:36:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:36:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-20 06:36:15,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:15,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:15,082 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:15,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:36:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:15,160 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:36:15,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-20 06:36:15,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 99 states and 128 transitions. Complement of second has 6 states. [2020-10-20 06:36:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:36:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:36:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:15,189 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:15,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:15,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:36:15,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:15,274 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-10-20 06:36:15,274 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-20 06:36:15,464 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2020-10-20 06:36:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:36:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2020-10-20 06:36:15,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-20 06:36:15,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:15,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2020-10-20 06:36:15,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:15,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2020-10-20 06:36:15,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:15,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2020-10-20 06:36:15,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-10-20 06:36:15,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2020-10-20 06:36:15,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-20 06:36:15,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:36:15,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2020-10-20 06:36:15,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:15,494 INFO L691 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2020-10-20 06:36:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2020-10-20 06:36:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2020-10-20 06:36:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-20 06:36:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2020-10-20 06:36:15,524 INFO L714 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-10-20 06:36:15,525 INFO L594 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-10-20 06:36:15,525 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-10-20 06:36:15,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2020-10-20 06:36:15,526 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2020-10-20 06:36:15,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:15,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:15,527 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:36:15,528 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2020-10-20 06:36:15,529 INFO L794 eck$LassoCheckResult]: Stem: 4641#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4645#L13-1 assume !!(main_~i~0 > 10); 4657#L10 assume !(25 == main_~i~0); 4655#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-10-20 06:36:15,529 INFO L796 eck$LassoCheckResult]: Loop: 4646#L13-1 assume !!(main_~i~0 > 10); 4647#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4660#L10 assume !(25 == main_~i~0); 4689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4687#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4650#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-10-20 06:36:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2020-10-20 06:36:15,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:15,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015153073] [2020-10-20 06:36:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2020-10-20 06:36:15,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:15,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378642496] [2020-10-20 06:36:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:15,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:15,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2020-10-20 06:36:15,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:15,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140555222] [2020-10-20 06:36:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:15,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:15,595 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:15,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:36:15 BoogieIcfgContainer [2020-10-20 06:36:15,699 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:36:15,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:36:15,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:36:15,700 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:36:15,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:07" (3/4) ... [2020-10-20 06:36:15,705 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:36:15,756 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:36:15,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:36:15,759 INFO L168 Benchmark]: Toolchain (without parser) took 8460.92 ms. Allocated memory was 35.1 MB in the beginning and 72.4 MB in the end (delta: 37.2 MB). Free memory was 15.2 MB in the beginning and 13.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 39.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,760 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.77 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.4 MB in the beginning and 26.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 24.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,762 INFO L168 Benchmark]: Boogie Preprocessor took 25.76 ms. Allocated memory is still 43.5 MB. Free memory was 24.9 MB in the beginning and 23.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,763 INFO L168 Benchmark]: RCFGBuilder took 237.25 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.7 MB in the beginning and 26.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,764 INFO L168 Benchmark]: BuchiAutomizer took 7761.46 ms. Allocated memory was 45.1 MB in the beginning and 72.4 MB in the end (delta: 27.3 MB). Free memory was 26.1 MB in the beginning and 15.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,764 INFO L168 Benchmark]: Witness Printer took 57.02 ms. Allocated memory is still 72.4 MB. Free memory was 15.3 MB in the beginning and 13.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:15,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 9.0 MB in the beginning and 8.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 328.77 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.4 MB in the beginning and 26.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 24.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.76 ms. Allocated memory is still 43.5 MB. Free memory was 24.9 MB in the beginning and 23.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 237.25 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.7 MB in the beginning and 26.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 7761.46 ms. Allocated memory was 45.1 MB in the beginning and 72.4 MB in the end (delta: 27.3 MB). Free memory was 26.1 MB in the beginning and 15.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 14.3 GB. * Witness Printer took 57.02 ms. Allocated memory is still 72.4 MB. Free memory was 15.3 MB in the beginning and 13.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. 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 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function -2 * i + 51 and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.6s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 4.5s. Construction of modules took 0.4s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 246 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax210 hnf92 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@134fcf2f=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...