./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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 0.1.25-906a4fb [2020-10-19 18:43:07,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:43:07,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:43:07,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:43:07,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:43:07,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:43:07,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:43:07,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:43:07,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:43:07,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:43:07,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:43:07,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:43:07,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:43:07,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:43:07,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:43:07,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:43:07,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:43:07,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:43:07,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:43:07,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:43:07,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:43:07,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:43:07,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:43:07,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:43:07,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:43:07,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:43:07,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:43:07,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:43:07,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:43:07,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:43:07,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:43:07,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:43:07,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:43:07,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:43:07,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:43:07,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:43:07,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:43:07,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:43:07,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:43:07,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:43:07,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:43:07,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:43:07,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:43:07,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:43:07,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:43:07,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:43:07,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:43:07,629 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:43:07,630 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:43:07,630 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:43:07,630 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:43:07,631 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:43:07,631 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:43:07,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:43:07,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:43:07,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:43:07,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:43:07,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:43:07,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:43:07,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:43:07,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:43:07,633 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:43:07,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:43:07,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:43:07,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:43:07,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:43:07,635 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:43:07,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:43:07,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:43:07,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:43:07,636 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:43:07,637 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:43:07,637 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 [2020-10-19 18:43:07,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:43:07,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:43:07,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:43:07,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:43:07,971 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:43:07,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-10-19 18:43:08,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f44230d/7a44cdd9bdbe492bbfc36866cd805197/FLAG8749731d7 [2020-10-19 18:43:08,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:43:08,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-10-19 18:43:08,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f44230d/7a44cdd9bdbe492bbfc36866cd805197/FLAG8749731d7 [2020-10-19 18:43:08,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f44230d/7a44cdd9bdbe492bbfc36866cd805197 [2020-10-19 18:43:08,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:43:08,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:43:08,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:43:08,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:43:08,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:43:08,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:43:08" (1/1) ... [2020-10-19 18:43:08,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b1b0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:08, skipping insertion in model container [2020-10-19 18:43:08,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:43:08" (1/1) ... [2020-10-19 18:43:08,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:43:08,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:43:09,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:43:09,148 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:43:09,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:43:09,178 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:43:09,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09 WrapperNode [2020-10-19 18:43:09,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:43:09,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:43:09,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:43:09,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:43:09,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:43:09,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:43:09,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:43:09,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:43:09,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (1/1) ... [2020-10-19 18:43:09,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:43:09,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:43:09,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:43:09,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:43:09,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (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 [2020-10-19 18:43:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:43:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:43:09,503 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:43:09,503 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:43:09,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:09 BoogieIcfgContainer [2020-10-19 18:43:09,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:43:09,506 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:43:09,506 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:43:09,509 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:43:09,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:09,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:43:08" (1/3) ... [2020-10-19 18:43:09,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16d51fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:43:09, skipping insertion in model container [2020-10-19 18:43:09,511 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:09,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:43:09" (2/3) ... [2020-10-19 18:43:09,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16d51fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:43:09, skipping insertion in model container [2020-10-19 18:43:09,512 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:43:09,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:09" (3/3) ... [2020-10-19 18:43:09,514 INFO L373 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2020-10-19 18:43:09,562 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:43:09,562 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:43:09,563 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:43:09,563 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:43:09,563 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:43:09,563 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:43:09,563 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:43:09,563 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:43:09,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-19 18:43:09,596 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:43:09,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:09,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:09,602 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:43:09,602 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:09,602 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:43:09,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-19 18:43:09,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:43:09,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:09,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:09,604 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:43:09,604 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:09,611 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2020-10-19 18:43:09,612 INFO L796 eck$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 [2020-10-19 18:43:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:43:09,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:09,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922349976] [2020-10-19 18:43:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2020-10-19 18:43:09,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:09,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017267940] [2020-10-19 18:43:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2020-10-19 18:43:09,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:09,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176704416] [2020-10-19 18:43:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:09,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:09,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:09,934 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:09,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:09,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:09,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:09,936 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:09,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:09,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:09,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:09,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-10-19 18:43:09,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:09,939 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:09,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:09,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:09,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:10,084 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:10,085 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:10,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:10,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:10,104 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:10,104 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 [2020-10-19 18:43:10,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:10,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:10,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:10,143 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) [2020-10-19 18:43:10,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:10,185 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 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 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 [2020-10-19 18:43:10,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:10,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:10,233 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:10,258 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:10,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:10,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:10,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:10,259 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:10,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:10,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:10,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:10,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-10-19 18:43:10,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:10,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:10,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:10,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:10,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:10,358 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:10,363 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) [2020-10-19 18:43:10,376 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 [2020-10-19 18:43:10,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:10,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:10,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:10,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:10,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:10,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:10,394 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:10,424 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 [2020-10-19 18:43:10,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:10,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:10,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:10,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:10,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:10,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:10,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:10,437 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:10,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:10,449 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) [2020-10-19 18:43:10,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:10,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:10,459 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:10,460 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 [2020-10-19 18:43:10,500 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:10,560 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:10,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:10,578 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:10,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:10,654 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 [2020-10-19 18:43:10,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-10-19 18:43:10,733 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. [2020-10-19 18:43:10,735 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 [2020-10-19 18:43:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:43:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-19 18:43:10,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-19 18:43:10,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:10,742 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:10,768 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:10,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:10,778 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:10,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:10,810 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 [2020-10-19 18:43:10,811 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-10-19 18:43:10,861 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. [2020-10-19 18:43:10,863 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 [2020-10-19 18:43:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:43:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-10-19 18:43:10,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-19 18:43:10,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:10,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:43:10,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:10,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-19 18:43:10,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:10,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2020-10-19 18:43:10,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:43:10,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2020-10-19 18:43:10,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 18:43:10,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-19 18:43:10,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2020-10-19 18:43:10,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:10,887 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-10-19 18:43:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2020-10-19 18:43:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-19 18:43:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 18:43:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-10-19 18:43:10,942 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-19 18:43:10,946 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-19 18:43:10,946 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:43:10,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-10-19 18:43:10,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:43:10,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:10,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:10,949 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 18:43:10,951 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:10,952 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2020-10-19 18:43:10,952 INFO L796 eck$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 [2020-10-19 18:43:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-19 18:43:10,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:10,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224693739] [2020-10-19 18:43:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:10,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:10,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:10,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2020-10-19 18:43:10,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:10,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874060795] [2020-10-19 18:43:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:10,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:10,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:10,998 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2020-10-19 18:43:11,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:11,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293618635] [2020-10-19 18:43:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:11,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:11,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:11,037 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:11,105 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:11,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:11,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:11,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:11,109 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:11,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:11,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:11,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-10-19 18:43:11,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:11,110 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:11,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,217 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:11,217 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) [2020-10-19 18:43:11,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:11,224 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 [2020-10-19 18:43:11,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:11,231 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) [2020-10-19 18:43:11,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:11,292 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:11,298 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) [2020-10-19 18:43:11,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:11,348 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:43:11,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:11,412 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,426 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:11,463 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:11,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:11,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:11,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:11,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:11,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:11,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:11,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-10-19 18:43:11,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:11,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:11,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,552 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:11,552 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 [2020-10-19 18:43:11,563 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 [2020-10-19 18:43:11,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:11,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:11,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:11,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:11,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:11,574 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:43:11,579 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 [2020-10-19 18:43:11,612 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 [2020-10-19 18:43:11,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:11,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:11,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:11,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:11,618 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:11,618 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:43:11,624 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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,651 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 [2020-10-19 18:43:11,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:11,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:11,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:11,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:11,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:11,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:11,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:11,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:11,662 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:11,662 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 [2020-10-19 18:43:11,666 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:11,666 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:11,666 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:11,666 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2020-10-19 18:43:11,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:11,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:11,722 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:11,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:11,738 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 [2020-10-19 18:43:11,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-19 18:43:11,764 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. [2020-10-19 18:43:11,764 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 [2020-10-19 18:43:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-19 18:43:11,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-19 18:43:11,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:11,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 18:43:11,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:11,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-19 18:43:11,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:11,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-10-19 18:43:11,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:43:11,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2020-10-19 18:43:11,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-19 18:43:11,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-19 18:43:11,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2020-10-19 18:43:11,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:11,770 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-10-19 18:43:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2020-10-19 18:43:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-10-19 18:43:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 18:43:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-10-19 18:43:11,774 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-10-19 18:43:11,774 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-10-19 18:43:11,774 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:43:11,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2020-10-19 18:43:11,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:43:11,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:11,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:11,776 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:11,776 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:11,777 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2020-10-19 18:43:11,777 INFO L796 eck$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 [2020-10-19 18:43:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:11,777 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2020-10-19 18:43:11,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:11,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425362921] [2020-10-19 18:43:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:11,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425362921] [2020-10-19 18:43:11,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:43:11,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:43:11,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980478338] [2020-10-19 18:43:11,827 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:43:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2020-10-19 18:43:11,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:11,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508973830] [2020-10-19 18:43:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:11,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:11,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:11,837 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:11,866 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:11,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:11,867 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:11,867 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:11,867 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:11,867 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:11,867 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:11,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:11,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-10-19 18:43:11,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:11,868 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:11,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:11,930 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:11,930 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) [2020-10-19 18:43:11,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:11,942 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 [2020-10-19 18:43:11,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:11,947 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) [2020-10-19 18:43:11,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:11,992 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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:12,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:12,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:12,034 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:12,058 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:12,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:12,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:12,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:12,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:12,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:12,059 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:12,059 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:12,059 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-10-19 18:43:12,059 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:12,059 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:12,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,113 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:12,114 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:12,122 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 [2020-10-19 18:43:12,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:12,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:12,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:12,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:12,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:12,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:12,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:12,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:12,132 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:12,132 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) [2020-10-19 18:43:12,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:12,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:12,142 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:12,142 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 [2020-10-19 18:43:12,182 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,211 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:12,231 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 [2020-10-19 18:43:12,231 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-19 18:43:12,253 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. [2020-10-19 18:43:12,254 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 [2020-10-19 18:43:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:43:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:12,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:43:12,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,256 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:12,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,284 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:12,304 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 [2020-10-19 18:43:12,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-19 18:43:12,333 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. [2020-10-19 18:43:12,334 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 [2020-10-19 18:43:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:43:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-19 18:43:12,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:43:12,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:43:12,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:43:12,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2020-10-19 18:43:12,339 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:43:12,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2020-10-19 18:43:12,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-10-19 18:43:12,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-19 18:43:12,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2020-10-19 18:43:12,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:12,342 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2020-10-19 18:43:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2020-10-19 18:43:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-19 18:43:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:43:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2020-10-19 18:43:12,348 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2020-10-19 18:43:12,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:43:12,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:43:12,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:43:12,354 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2020-10-19 18:43:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:43:12,380 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-19 18:43:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:43:12,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2020-10-19 18:43:12,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:43:12,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2020-10-19 18:43:12,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-19 18:43:12,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-19 18:43:12,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2020-10-19 18:43:12,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:12,384 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-19 18:43:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2020-10-19 18:43:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-10-19 18:43:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 18:43:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-19 18:43:12,388 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-19 18:43:12,388 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-19 18:43:12,388 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:43:12,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-10-19 18:43:12,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:43:12,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:12,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:12,390 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-10-19 18:43:12,390 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:12,390 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 [2020-10-19 18:43:12,391 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 [2020-10-19 18:43:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2020-10-19 18:43:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:12,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617817685] [2020-10-19 18:43:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,402 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2020-10-19 18:43:12,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:12,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97753188] [2020-10-19 18:43:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2020-10-19 18:43:12,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:12,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224866468] [2020-10-19 18:43:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:12,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:12,434 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:12,459 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:12,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:12,460 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:12,460 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:12,460 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:12,460 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:12,460 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:12,460 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:12,460 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-10-19 18:43:12,460 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:12,460 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:12,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,517 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:12,518 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) [2020-10-19 18:43:12,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:12,527 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) [2020-10-19 18:43:12,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:12,592 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 [2020-10-19 18:43:12,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:12,636 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:12,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:12,636 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:12,636 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:12,637 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:12,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:12,637 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:12,637 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:12,637 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-10-19 18:43:12,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:12,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:12,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:12,704 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:12,704 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) [2020-10-19 18:43:12,711 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 [2020-10-19 18:43:12,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:12,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:12,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:12,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:12,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:12,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:12,718 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 [2020-10-19 18:43:12,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:12,725 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:12,725 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:43:12,728 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:12,729 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:12,729 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:12,729 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 [2020-10-19 18:43:12,762 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,795 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:12,808 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 [2020-10-19 18:43:12,808 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:12,871 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. [2020-10-19 18:43:12,872 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 [2020-10-19 18:43:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:12,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 18:43:12,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,873 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:12,939 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 [2020-10-19 18:43:12,940 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:12,956 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. [2020-10-19 18:43:12,956 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 [2020-10-19 18:43:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:12,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 18:43:12,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:12,957 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:12,979 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:43:12,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:12,990 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 [2020-10-19 18:43:12,990 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:13,009 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. [2020-10-19 18:43:13,010 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 [2020-10-19 18:43:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-19 18:43:13,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 18:43:13,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-19 18:43:13,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-19 18:43:13,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2020-10-19 18:43:13,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 18:43:13,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2020-10-19 18:43:13,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-19 18:43:13,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-10-19 18:43:13,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2020-10-19 18:43:13,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:13,015 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-10-19 18:43:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2020-10-19 18:43:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2020-10-19 18:43:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 18:43:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2020-10-19 18:43:13,017 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-19 18:43:13,017 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-19 18:43:13,017 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:43:13,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2020-10-19 18:43:13,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 18:43:13,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:13,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:13,018 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:13,018 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:13,018 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 [2020-10-19 18:43:13,018 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 [2020-10-19 18:43:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,019 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2020-10-19 18:43:13,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267142587] [2020-10-19 18:43:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,028 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,029 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2020-10-19 18:43:13,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348713945] [2020-10-19 18:43:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,045 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2020-10-19 18:43:13,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421261104] [2020-10-19 18:43:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,055 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,094 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:13,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:13,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:13,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:13,095 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:13,095 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:13,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:13,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-10-19 18:43:13,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:13,096 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:13,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,204 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:13,204 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) [2020-10-19 18:43:13,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:13,209 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) [2020-10-19 18:43:13,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:13,253 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 [2020-10-19 18:43:13,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:13,308 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:13,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:13,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:13,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:13,308 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:13,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:13,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:13,309 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-10-19 18:43:13,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:13,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:13,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:13,400 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) [2020-10-19 18:43:13,404 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 [2020-10-19 18:43:13,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:13,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:13,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:13,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:13,409 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:13,409 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 [2020-10-19 18:43:13,414 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) [2020-10-19 18:43:13,453 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 [2020-10-19 18:43:13,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:13,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:13,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:13,455 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:43:13,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:13,458 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 18:43:13,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,463 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:13,466 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 18:43:13,466 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) [2020-10-19 18:43:13,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:13,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:13,470 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:13,470 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,503 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:13,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:13,526 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:13,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:13,536 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 [2020-10-19 18:43:13,536 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-19 18:43:13,550 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. [2020-10-19 18:43:13,550 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 [2020-10-19 18:43:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:13,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:43:13,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:43:13,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:43:13,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2020-10-19 18:43:13,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 18:43:13,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2020-10-19 18:43:13,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-19 18:43:13,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:43:13,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2020-10-19 18:43:13,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:13,556 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-19 18:43:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2020-10-19 18:43:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-10-19 18:43:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:43:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-10-19 18:43:13,560 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-19 18:43:13,560 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-19 18:43:13,560 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:43:13,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2020-10-19 18:43:13,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 18:43:13,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:13,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:13,562 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-10-19 18:43:13,562 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:43:13,563 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 [2020-10-19 18:43:13,563 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 [2020-10-19 18:43:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2020-10-19 18:43:13,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905971616] [2020-10-19 18:43:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2020-10-19 18:43:13,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063564179] [2020-10-19 18:43:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,586 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2020-10-19 18:43:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:13,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970710940] [2020-10-19 18:43:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:13,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:13,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:13,622 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:13,623 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:13,623 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:13,623 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:13,623 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:13,623 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,624 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:13,624 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:13,624 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-10-19 18:43:13,624 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:13,624 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:13,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:13,724 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:43:13,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:13,731 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:13,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:13,797 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:13,799 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:13,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:13,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:13,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:13,800 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:13,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:13,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:13,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:13,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-10-19 18:43:13,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:13,800 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:13,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:13,884 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:13,884 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) [2020-10-19 18:43:13,887 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 [2020-10-19 18:43:13,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:13,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:13,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:13,890 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:43:13,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:13,892 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 18:43:13,892 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 [2020-10-19 18:43:13,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:13,900 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 18:43:13,900 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) [2020-10-19 18:43:13,904 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:13,904 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:13,904 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:13,904 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 [2020-10-19 18:43:13,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:13,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:13,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:13,964 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:13,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:13,980 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 [2020-10-19 18:43:13,980 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:13,995 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. [2020-10-19 18:43:13,995 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 [2020-10-19 18:43:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:13,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:43:13,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:13,996 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,021 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:14,032 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 [2020-10-19 18:43:14,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:14,044 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. [2020-10-19 18:43:14,044 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 [2020-10-19 18:43:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:14,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:43:14,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,045 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,069 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:14,079 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 [2020-10-19 18:43:14,079 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:43:14,092 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. [2020-10-19 18:43:14,093 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 [2020-10-19 18:43:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:43:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-19 18:43:14,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:43:14,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:43:14,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:43:14,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2020-10-19 18:43:14,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-19 18:43:14,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2020-10-19 18:43:14,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:43:14,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:43:14,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2020-10-19 18:43:14,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:14,097 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-19 18:43:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2020-10-19 18:43:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2020-10-19 18:43:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:43:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-10-19 18:43:14,100 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-19 18:43:14,100 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-19 18:43:14,100 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:43:14,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-10-19 18:43:14,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-19 18:43:14,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:14,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:14,101 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:14,101 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-10-19 18:43:14,102 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 [2020-10-19 18:43:14,102 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 [2020-10-19 18:43:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2020-10-19 18:43:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852078697] [2020-10-19 18:43:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:14,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2020-10-19 18:43:14,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079789215] [2020-10-19 18:43:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2020-10-19 18:43:14,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998543323] [2020-10-19 18:43:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:14,170 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:14,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:14,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:14,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:14,170 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:14,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:14,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:14,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:14,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-10-19 18:43:14,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:14,171 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:14,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,232 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:14,232 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) [2020-10-19 18:43:14,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:14,236 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) [2020-10-19 18:43:14,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:14,276 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:14,282 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:14,308 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:14,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:14,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:14,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:14,309 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:14,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:14,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:14,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:14,309 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-10-19 18:43:14,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:14,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:14,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,352 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:14,352 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 [2020-10-19 18:43:14,354 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 [2020-10-19 18:43:14,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:14,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:14,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:14,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:14,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:14,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:14,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:14,359 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:14,362 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:14,362 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 [2020-10-19 18:43:14,365 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:14,365 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:14,365 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:14,365 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2020-10-19 18:43:14,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:14,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:14,454 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 [2020-10-19 18:43:14,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-10-19 18:43:14,489 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. [2020-10-19 18:43:14,491 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 [2020-10-19 18:43:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-19 18:43:14,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:43:14,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,493 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:14,555 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 [2020-10-19 18:43:14,556 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-10-19 18:43:14,600 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. [2020-10-19 18:43:14,601 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 [2020-10-19 18:43:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-19 18:43:14,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:43:14,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-19 18:43:14,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:14,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:14,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2020-10-19 18:43:14,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-19 18:43:14,605 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2020-10-19 18:43:14,605 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:43:14,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:43:14,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2020-10-19 18:43:14,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:14,606 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-19 18:43:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2020-10-19 18:43:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-19 18:43:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 18:43:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-10-19 18:43:14,609 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-10-19 18:43:14,610 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-10-19 18:43:14,610 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:43:14,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2020-10-19 18:43:14,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-19 18:43:14,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:14,611 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:14,612 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2020-10-19 18:43:14,612 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-10-19 18:43:14,612 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 [2020-10-19 18:43:14,613 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 [2020-10-19 18:43:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,613 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2020-10-19 18:43:14,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772243915] [2020-10-19 18:43:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2020-10-19 18:43:14,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686792873] [2020-10-19 18:43:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:14,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:14,637 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2020-10-19 18:43:14,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:14,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298616260] [2020-10-19 18:43:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:43:14,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298616260] [2020-10-19 18:43:14,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522659658] [2020-10-19 18:43:14,691 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 [2020-10-19 18:43:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:14,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:43:14,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:43:14,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:43:14,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:43:14,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207854344] [2020-10-19 18:43:14,762 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:14,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:14,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:14,763 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:14,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:14,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:14,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:14,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:14,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-10-19 18:43:14,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:14,763 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:14,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,811 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:14,812 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 [2020-10-19 18:43:14,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:14,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:14,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:14,828 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) [2020-10-19 18:43:14,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:14,869 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 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 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 [2020-10-19 18:43:14,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:14,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:14,917 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:14,940 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:14,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:14,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:14,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:14,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:14,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:14,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:14,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:14,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-10-19 18:43:14,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:14,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:14,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:14,985 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:14,985 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 [2020-10-19 18:43:14,993 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 [2020-10-19 18:43:14,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:14,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:14,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:14,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:14,997 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:14,997 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:43:15,000 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 [2020-10-19 18:43:15,023 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 [2020-10-19 18:43:15,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:15,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:15,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:15,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:15,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:15,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:15,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:15,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:15,029 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:15,030 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 [2020-10-19 18:43:15,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:15,033 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:15,033 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:15,033 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2020-10-19 18:43:15,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:15,113 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 [2020-10-19 18:43:15,114 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-19 18:43:15,149 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. [2020-10-19 18:43:15,150 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 [2020-10-19 18:43:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-19 18:43:15,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:43:15,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,151 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:15,214 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 [2020-10-19 18:43:15,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-19 18:43:15,256 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. [2020-10-19 18:43:15,256 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 [2020-10-19 18:43:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-19 18:43:15,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:43:15,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,258 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:15,331 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 [2020-10-19 18:43:15,331 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-19 18:43:15,367 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. [2020-10-19 18:43:15,368 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 [2020-10-19 18:43:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-19 18:43:15,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:43:15,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,369 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:15,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:43:15,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:15,444 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 [2020-10-19 18:43:15,445 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-10-19 18:43:15,500 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. [2020-10-19 18:43:15,501 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 [2020-10-19 18:43:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:43:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-19 18:43:15,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:43:15,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-19 18:43:15,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2020-10-19 18:43:15,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:15,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2020-10-19 18:43:15,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-10-19 18:43:15,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2020-10-19 18:43:15,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:43:15,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:43:15,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2020-10-19 18:43:15,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:15,507 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-10-19 18:43:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2020-10-19 18:43:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2020-10-19 18:43:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:43:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2020-10-19 18:43:15,510 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2020-10-19 18:43:15,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:43:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:43:15,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:43:15,511 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2020-10-19 18:43:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:43:15,547 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-19 18:43:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:43:15,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-19 18:43:15,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-19 18:43:15,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2020-10-19 18:43:15,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-19 18:43:15,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-10-19 18:43:15,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-10-19 18:43:15,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:15,552 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-19 18:43:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-10-19 18:43:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-19 18:43:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:43:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-10-19 18:43:15,560 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-19 18:43:15,560 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-19 18:43:15,560 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 18:43:15,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-10-19 18:43:15,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-19 18:43:15,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:15,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:15,562 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:15,562 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2020-10-19 18:43:15,562 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 [2020-10-19 18:43:15,562 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 [2020-10-19 18:43:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2020-10-19 18:43:15,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821660763] [2020-10-19 18:43:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,575 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2020-10-19 18:43:15,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416449366] [2020-10-19 18:43:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:15,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:15,588 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2020-10-19 18:43:15,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:15,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598259648] [2020-10-19 18:43:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:15,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:15,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:15,645 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:15,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:15,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:15,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:15,646 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:15,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:15,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:15,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:15,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-10-19 18:43:15,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:15,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:15,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:15,701 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) [2020-10-19 18:43:15,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:15,718 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 [2020-10-19 18:43:15,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:43:15,726 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) [2020-10-19 18:43:15,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:15,762 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 47 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:43:15,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:15,819 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 [2020-10-19 18:43:15,827 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:15,881 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:15,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:15,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:15,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:15,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:15,882 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:15,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:15,882 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:15,883 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-10-19 18:43:15,883 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:15,883 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:15,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:15,942 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:15,942 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) [2020-10-19 18:43:15,948 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 [2020-10-19 18:43:15,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:15,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:15,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:15,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:15,955 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:15,955 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:15,962 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) [2020-10-19 18:43:16,020 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 [2020-10-19 18:43:16,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:16,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:16,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:16,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:16,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:43:16,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,029 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) [2020-10-19 18:43:16,066 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 [2020-10-19 18:43:16,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:16,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:16,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:16,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:16,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:16,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:16,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:16,077 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:16,078 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) [2020-10-19 18:43:16,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:16,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:16,108 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:16,108 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,141 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,233 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 [2020-10-19 18:43:16,233 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:43:16,243 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. [2020-10-19 18:43:16,244 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 [2020-10-19 18:43:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:43:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:16,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-19 18:43:16,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,245 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,315 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 [2020-10-19 18:43:16,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:43:16,347 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. [2020-10-19 18:43:16,348 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 [2020-10-19 18:43:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:43:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-19 18:43:16,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-19 18:43:16,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,349 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,435 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 [2020-10-19 18:43:16,435 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:43:16,445 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. [2020-10-19 18:43:16,446 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 [2020-10-19 18:43:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:43:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-19 18:43:16,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-19 18:43:16,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,447 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,534 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 [2020-10-19 18:43:16,534 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:43:16,558 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. [2020-10-19 18:43:16,558 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 [2020-10-19 18:43:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:43:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-19 18:43:16,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-19 18:43:16,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,560 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:16,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:43:16,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:16,645 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 [2020-10-19 18:43:16,647 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:43:16,786 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 [2020-10-19 18:43:16,788 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 [2020-10-19 18:43:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:43:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-10-19 18:43:16,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2020-10-19 18:43:16,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2020-10-19 18:43:16,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2020-10-19 18:43:16,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:16,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2020-10-19 18:43:16,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2020-10-19 18:43:16,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2020-10-19 18:43:16,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 18:43:16,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:43:16,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2020-10-19 18:43:16,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:16,807 INFO L691 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2020-10-19 18:43:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2020-10-19 18:43:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2020-10-19 18:43:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 18:43:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2020-10-19 18:43:16,821 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-10-19 18:43:16,821 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-10-19 18:43:16,821 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-10-19 18:43:16,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2020-10-19 18:43:16,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-19 18:43:16,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:16,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:16,824 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:16,824 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2020-10-19 18:43:16,824 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 [2020-10-19 18:43:16,824 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 [2020-10-19 18:43:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2020-10-19 18:43:16,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:16,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608773514] [2020-10-19 18:43:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2020-10-19 18:43:16,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:16,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344457295] [2020-10-19 18:43:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:16,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2020-10-19 18:43:16,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:16,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281827816] [2020-10-19 18:43:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:16,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:16,886 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:16,936 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:16,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:16,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:16,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:16,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:43:16,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:16,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:16,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:16,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-10-19 18:43:16,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:16,938 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:16,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:16,988 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:16,988 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 [2020-10-19 18:43:16,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:43:16,992 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 [2020-10-19 18:43:17,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:43:17,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:43:17,020 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:43:17,043 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:43:17,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:43:17,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:43:17,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:43:17,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:43:17,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:17,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:43:17,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:43:17,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-10-19 18:43:17,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:43:17,044 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:43:17,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:17,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:17,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:43:17,092 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:43:17,092 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) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:17,098 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 [2020-10-19 18:43:17,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:43:17,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:43:17,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:43:17,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:43:17,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:43:17,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:43:17,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:43:17,105 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:43:17,112 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:43:17,112 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) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:43:17,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:43:17,115 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:43:17,115 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:43:17,115 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2020-10-19 18:43:17,136 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:43:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:17,225 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 [2020-10-19 18:43:17,225 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-19 18:43:17,249 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. [2020-10-19 18:43:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:43:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-19 18:43:17,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:17,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,253 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:17,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:17,360 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 [2020-10-19 18:43:17,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-19 18:43:17,389 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. [2020-10-19 18:43:17,390 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 [2020-10-19 18:43:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-10-19 18:43:17,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:17,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,391 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:17,478 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 [2020-10-19 18:43:17,479 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-19 18:43:17,495 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. [2020-10-19 18:43:17,497 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 [2020-10-19 18:43:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-10-19 18:43:17,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:17,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,498 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:17,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:17,593 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 [2020-10-19 18:43:17,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-19 18:43:17,625 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. [2020-10-19 18:43:17,626 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 [2020-10-19 18:43:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-19 18:43:17,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:17,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,627 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:43:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:43:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:43:17,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:43:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:43:17,723 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 [2020-10-19 18:43:17,723 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-10-19 18:43:17,927 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 [2020-10-19 18:43:17,927 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 [2020-10-19 18:43:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:43:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2020-10-19 18:43:17,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-19 18:43:17,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2020-10-19 18:43:17,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2020-10-19 18:43:17,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:43:17,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2020-10-19 18:43:17,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-10-19 18:43:17,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2020-10-19 18:43:17,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 18:43:17,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:43:17,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2020-10-19 18:43:17,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:43:17,953 INFO L691 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2020-10-19 18:43:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2020-10-19 18:43:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2020-10-19 18:43:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-19 18:43:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2020-10-19 18:43:17,973 INFO L714 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-10-19 18:43:17,973 INFO L594 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-10-19 18:43:17,973 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-10-19 18:43:17,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2020-10-19 18:43:17,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2020-10-19 18:43:17,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:43:17,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:43:17,976 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:43:17,976 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2020-10-19 18:43:17,977 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 [2020-10-19 18:43:17,977 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 [2020-10-19 18:43:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2020-10-19 18:43:17,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:17,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142761081] [2020-10-19 18:43:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:17,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:17,990 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2020-10-19 18:43:17,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:17,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593251208] [2020-10-19 18:43:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:18,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:18,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:18,026 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:43:18,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2020-10-19 18:43:18,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:43:18,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054523376] [2020-10-19 18:43:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:43:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:18,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:43:18,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:43:18,051 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:43:18,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:43:18 BoogieIcfgContainer [2020-10-19 18:43:18,168 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:43:18,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:43:18,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:43:18,168 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:43:18,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:43:09" (3/4) ... [2020-10-19 18:43:18,172 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:43:18,218 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:43:18,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:43:18,221 INFO L168 Benchmark]: Toolchain (without parser) took 9340.58 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -99.3 MB). Peak memory consumption was 222.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,221 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:43:18,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.23 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,223 INFO L168 Benchmark]: Boogie Preprocessor took 22.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:43:18,223 INFO L168 Benchmark]: RCFGBuilder took 206.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,224 INFO L168 Benchmark]: BuchiAutomizer took 8661.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 238.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,224 INFO L168 Benchmark]: Witness Printer took 49.95 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:43:18,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.23 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8661.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 238.2 MB. Max. memory is 11.5 GB. * Witness Printer took 49.95 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 8.6s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 5.0s. Construction of modules took 0.5s. Büchi inclusion checks took 2.6s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.1s 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, 0.5s 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: 28ms 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@296cee27=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...