./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/b.18.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 bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:17:48,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:17:48,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:17:48,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:17:48,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:17:48,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:17:48,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:17:48,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:17:48,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:17:48,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:17:48,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:17:48,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:17:48,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:17:48,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:17:48,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:17:48,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:17:48,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:17:48,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:17:48,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:17:48,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:17:48,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:17:48,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:17:48,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:17:48,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:17:48,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:17:48,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:17:48,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:17:48,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:17:48,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:17:48,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:17:48,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:17:48,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:17:48,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:17:48,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:17:48,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:17:48,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:17:48,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:17:48,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:17:48,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:17:48,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:17:48,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:17:48,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:17:48,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:17:48,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:17:48,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:17:48,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:17:48,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:17:48,704 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:17:48,704 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:17:48,705 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:17:48,705 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:17:48,705 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:17:48,706 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:17:48,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:17:48,707 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:17:48,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:17:48,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:17:48,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:17:48,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:17:48,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:17:48,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:17:48,708 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:17:48,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:17:48,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:17:48,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:17:48,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:17:48,709 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:17:48,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:17:48,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:17:48,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:17:48,710 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:17:48,711 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:17:48,711 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 [2020-10-26 04:17:49,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:17:49,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:17:49,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:17:49,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:17:49,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:17:49,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.18.c [2020-10-26 04:17:49,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23395e447/c248e3b68b5e48658be59c7856b1f82d/FLAGa8acec927 [2020-10-26 04:17:49,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:17:49,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2020-10-26 04:17:49,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23395e447/c248e3b68b5e48658be59c7856b1f82d/FLAGa8acec927 [2020-10-26 04:17:50,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23395e447/c248e3b68b5e48658be59c7856b1f82d [2020-10-26 04:17:50,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:17:50,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:17:50,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:17:50,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:17:50,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:17:50,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fcfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50, skipping insertion in model container [2020-10-26 04:17:50,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:17:50,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:17:50,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:17:50,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:17:50,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:17:50,526 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:17:50,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50 WrapperNode [2020-10-26 04:17:50,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:17:50,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:17:50,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:17:50,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:17:50,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:17:50,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:17:50,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:17:50,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:17:50,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... [2020-10-26 04:17:50,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:17:50,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:17:50,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:17:50,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:17:50,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:17:50,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:17:50,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:17:50,815 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-26 04:17:50,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:50 BoogieIcfgContainer [2020-10-26 04:17:50,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:17:50,825 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:17:50,825 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:17:50,830 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:17:50,831 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:50,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:17:50" (1/3) ... [2020-10-26 04:17:50,832 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bf9ca72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:17:50, skipping insertion in model container [2020-10-26 04:17:50,832 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:50,832 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:50" (2/3) ... [2020-10-26 04:17:50,833 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bf9ca72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:17:50, skipping insertion in model container [2020-10-26 04:17:50,833 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:50,833 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:50" (3/3) ... [2020-10-26 04:17:50,835 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.18.c [2020-10-26 04:17:50,892 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:17:50,892 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:17:50,893 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:17:50,893 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:17:50,893 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:17:50,893 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:17:50,893 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:17:50,893 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:17:50,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-26 04:17:50,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:17:50,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:50,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:50,941 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:50,941 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:17:50,941 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:17:50,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-26 04:17:50,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:17:50,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:50,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:50,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:50,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:17:50,952 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L15-3true [2020-10-26 04:17:50,952 INFO L796 eck$LassoCheckResult]: Loop: 5#L15-3true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3#L10true assume !(main_~x~0 > main_~y~0); 8#L15-2true assume !(main_~y~0 > 0); 5#L15-3true [2020-10-26 04:17:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:17:50,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:50,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362616290] [2020-10-26 04:17:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,093 INFO L82 PathProgramCache]: Analyzing trace with hash 40272, now seen corresponding path program 1 times [2020-10-26 04:17:51,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308613896] [2020-10-26 04:17:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:51,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308613896] [2020-10-26 04:17:51,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:17:51,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 04:17:51,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554098587] [2020-10-26 04:17:51,165 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:17:51,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:17:51,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:17:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:17:51,188 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-10-26 04:17:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:17:51,228 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-10-26 04:17:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:17:51,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-10-26 04:17:51,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 04:17:51,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2020-10-26 04:17:51,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:17:51,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:17:51,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-26 04:17:51,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:17:51,240 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:17:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-26 04:17:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-10-26 04:17:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:17:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-10-26 04:17:51,282 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-10-26 04:17:51,282 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-10-26 04:17:51,282 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:17:51,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-10-26 04:17:51,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:17:51,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:51,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:51,287 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:51,287 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:17:51,287 INFO L794 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 37#L15-3 [2020-10-26 04:17:51,288 INFO L796 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 33#L10 assume main_~x~0 > main_~y~0; 35#L11-2 assume !(main_~x~0 > 0); 37#L15-3 [2020-10-26 04:17:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-26 04:17:51,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689683104] [2020-10-26 04:17:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,316 INFO L82 PathProgramCache]: Analyzing trace with hash 39824, now seen corresponding path program 1 times [2020-10-26 04:17:51,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474540396] [2020-10-26 04:17:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:51,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474540396] [2020-10-26 04:17:51,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:17:51,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 04:17:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169033557] [2020-10-26 04:17:51,396 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:17:51,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:17:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:17:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:17:51,401 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-26 04:17:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:17:51,440 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2020-10-26 04:17:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:17:51,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-10-26 04:17:51,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-26 04:17:51,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2020-10-26 04:17:51,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-26 04:17:51,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-26 04:17:51,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-26 04:17:51,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:17:51,450 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:17:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-26 04:17:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-26 04:17:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:17:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-26 04:17:51,453 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:17:51,453 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:17:51,453 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:17:51,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-26 04:17:51,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 04:17:51,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:51,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:51,456 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:51,456 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:17:51,457 INFO L794 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 57#L15-3 [2020-10-26 04:17:51,457 INFO L796 eck$LassoCheckResult]: Loop: 57#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 53#L10 assume !(main_~x~0 > main_~y~0); 54#L15-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 58#L15-2 assume !(main_~y~0 > 0); 57#L15-3 [2020-10-26 04:17:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2020-10-26 04:17:51,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059181649] [2020-10-26 04:17:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1248528, now seen corresponding path program 1 times [2020-10-26 04:17:51,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110311362] [2020-10-26 04:17:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,519 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash 29877679, now seen corresponding path program 1 times [2020-10-26 04:17:51,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:51,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530329141] [2020-10-26 04:17:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:51,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:51,545 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:51,616 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:51,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:51,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:51,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:51,617 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:17:51,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:51,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:51,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:51,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2020-10-26 04:17:51,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:51,619 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:51,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:51,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:51,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:51,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:51,803 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:51,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:51,813 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2020-10-26 04:17:51,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:17:51,864 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:51,977 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:17:51,982 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:51,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:51,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:51,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:51,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:17:51,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:51,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:51,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:51,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2020-10-26 04:17:51,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:51,984 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:51,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:51,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:52,070 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:17:52,084 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 [2020-10-26 04:17:52,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:52,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:17:52,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:52,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:52,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:52,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:17:52,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,096 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:17:52,108 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:17:52,108 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-26 04:17:52,119 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:17:52,120 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:17:52,121 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:17:52,121 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-26 04:17:52,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:17:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:17:52,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:52,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:17:52,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:17:52,243 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 [2020-10-26 04:17:52,244 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-26 04:17:52,304 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2020-10-26 04:17:52,305 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 [2020-10-26 04:17:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:17:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-26 04:17:52,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:17:52,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:17:52,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 8 letters. [2020-10-26 04:17:52,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-10-26 04:17:52,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:17:52,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 21 transitions. [2020-10-26 04:17:52,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-26 04:17:52,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-26 04:17:52,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2020-10-26 04:17:52,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:17:52,314 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2020-10-26 04:17:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2020-10-26 04:17:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-10-26 04:17:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:17:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-10-26 04:17:52,317 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-10-26 04:17:52,317 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-10-26 04:17:52,317 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:17:52,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-10-26 04:17:52,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:17:52,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:52,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:52,319 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:17:52,319 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:17:52,320 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 121#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2020-10-26 04:17:52,320 INFO L796 eck$LassoCheckResult]: Loop: 115#L10 assume main_~x~0 > main_~y~0; 116#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 125#L11-2 assume !(main_~x~0 > 0); 122#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2020-10-26 04:17:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:17:52,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:52,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726553649] [2020-10-26 04:17:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,343 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,345 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1332576, now seen corresponding path program 1 times [2020-10-26 04:17:52,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:52,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669251461] [2020-10-26 04:17:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:17:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669251461] [2020-10-26 04:17:52,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:17:52,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:17:52,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341794693] [2020-10-26 04:17:52,381 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:17:52,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:17:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:17:52,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:17:52,382 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-26 04:17:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:17:52,392 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-10-26 04:17:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:17:52,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-10-26 04:17:52,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:17:52,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2020-10-26 04:17:52,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-26 04:17:52,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-26 04:17:52,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-10-26 04:17:52,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:17:52,396 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-26 04:17:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-10-26 04:17:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-26 04:17:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 04:17:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2020-10-26 04:17:52,398 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-10-26 04:17:52,398 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-10-26 04:17:52,398 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:17:52,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2020-10-26 04:17:52,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:17:52,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:52,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:52,400 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:17:52,419 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:17:52,420 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 147#L10 assume main_~x~0 > main_~y~0; 148#L11-2 [2020-10-26 04:17:52,420 INFO L796 eck$LassoCheckResult]: Loop: 148#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 148#L11-2 [2020-10-26 04:17:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-26 04:17:52,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:52,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766695758] [2020-10-26 04:17:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,453 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-10-26 04:17:52,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:52,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98244043] [2020-10-26 04:17:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2020-10-26 04:17:52,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:52,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154189601] [2020-10-26 04:17:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:52,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:52,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:52,548 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:52,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:52,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:52,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:52,548 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:17:52,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:52,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:52,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2020-10-26 04:17:52,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:52,549 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:52,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,628 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:52,632 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:52,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:17:52,642 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:17:52,642 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 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 [2020-10-26 04:17:52,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:52,672 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:17:52,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:17:52,746 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:17:52,748 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:52,748 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:52,748 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:52,748 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:52,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:17:52,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:52,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:52,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2020-10-26 04:17:52,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:52,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:52,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:52,822 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:52,823 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:17:52,828 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 [2020-10-26 04:17:52,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:52,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:52,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:52,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:52,835 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:17:52,835 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:52,878 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 [2020-10-26 04:17:52,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:52,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:17:52,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:52,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:52,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:52,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:17:52,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,885 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:17:52,888 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:17:52,888 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:52,891 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:17:52,891 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:17:52,891 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:17:52,891 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-26 04:17:52,913 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:17:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:52,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:17:52,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:52,941 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:17:52,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:52,943 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:17:52,943 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-10-26 04:17:52,948 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 10 states and 13 transitions. Complement of second has 2 states. [2020-10-26 04:17:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-26 04:17:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:17:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2020-10-26 04:17:52,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-26 04:17:52,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-26 04:17:52,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:17:52,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:52,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2020-10-26 04:17:52,951 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:17:52,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:17:52,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:17:52,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:17:52,952 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:17:52,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:17:52,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:17:52,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:17:52,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:17:52 BoogieIcfgContainer [2020-10-26 04:17:52,959 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:17:52,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:17:52,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:17:52,960 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:17:52,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:50" (3/4) ... [2020-10-26 04:17:52,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:17:52,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:17:52,967 INFO L168 Benchmark]: Toolchain (without parser) took 2667.54 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 32.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:52,967 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:52,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.57 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 32.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:52,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.91 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 31.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:52,969 INFO L168 Benchmark]: Boogie Preprocessor took 18.03 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 30.3 MB in the end (delta: 957.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:52,970 INFO L168 Benchmark]: RCFGBuilder took 249.44 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 35.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:52,971 INFO L168 Benchmark]: BuchiAutomizer took 2134.26 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 35.1 MB in the beginning and 32.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:52,972 INFO L168 Benchmark]: Witness Printer took 4.54 ms. Allocated memory is still 60.8 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:52,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.57 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 32.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.91 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 31.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.03 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 30.3 MB in the end (delta: 957.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 249.44 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 35.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2134.26 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 35.1 MB in the beginning and 32.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.54 ms. Allocated memory is still 60.8 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 34 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf96 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...